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South Carolina Pest Management Handbook for Field Crops - 2017
22
WEEDCONTROLINFIELDCORNMikeMarshall,ExtensionWeedSpecialist
Preplant/BurndownHerbicidesforWeedManagementinFieldCorn
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
BalanceFlexx2SC(isoxaflutole)
6.0floz 0.094lb
27
45days 12hours
Comments:BALANCEFLEXXisaRESTRICTEDUSEPESTICIDE.ApplyBALANCEFLEXXupto30daysbeforeplantingcorn.AddMSOat0.5galper100galorCOCat1.0galper100galofspraysolutionforweeds3inchesorlessinheight.BALANCEFLEXXmaybetankmixedwithPARAQUAT,GLYPHOSATE,or2,4‐Difweedsaregreaterthan3inchesinheight.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseBALANCEFLEXXonsoilswherethesubsoilisloamysandorsand(i.e.,noclaysubsoil).Donotapplymorethan6.0flozBALANCEFLEXper365dayperiod.Rainfastinterval=N/A(suggest1hour).
Clarity/Banvel4S(dicamba)
8.0‐16oz 0.25‐0.5lb
4
‐‐‐ 24hours
Comments:Applyanytimepriortoplantingcorn.Use16oz/Arateonmediumtofinetexturesoilswith>2.5%organicmatter.Use8oz/Arateoncoarsetexturedsoilswithlessthan2.5%organicmatter.
Corvus2.63SC(thiencarbazone+isoxaflutole)
3.33floz 0.012lb
+0.031lb
227
45days 12hours
Comments:CORVUSisaRESTRICTEDUSEPESTICIDE.ApplyCORVUSupto30daysbeforeplantingcorn.AddMSOat0.5galper100galorCOCat1.0galper100galofspraysolutionforweeds6inchesorlessinheight.CORVUSmaybetankmixedwithPARAQUAT,GLYPHOSATE,or2,4‐Difweedsaregreaterthan6inchesinheight.Douseseedorsoil‐applied CHLORPYRIFOS, TERBUFOS, PHORATE, FONOPHOS, and other organophosphate or carbamateinsecticidesinthesameseasonasCORVUS.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseCORVUSonsoilswherethesubsoilisloamysandorsand(i.e.,noclaysubsoil).Donotapplymorethan5.6floz/AofCORVUSper365dayperiod.Rainfastinterval=N/A(suggest1hour).
Direx4L(diuron)
0.5‐0.8qt 0.5‐0.8lb
7
‐‐‐ 12hours
Comments:Applyanytimefromfallthroughspringpriortoplantingcorn.Heavytexturedsoilswillrequirehigherapplicationrate.DIREX4Lmaybetankmixedwithotherburndownherbicides,consulttankmixpartnerlabelformoredetails.Plantcornatleast1.5”deepandmakesureseedslotisclosed.Donotapplymorethan1.6qt/AofDIREX4Lperyear.
ET0.208EC(pyraflufenethyl)
0.5‐2.0oz 0.0008‐0.003lb
14
‐‐‐ 12hours
Comments:FieldcornmaybeplantedanytimeafterETapplication.Forbestresult,applyETtobroadleafweedslessthan4inchestallorrosetteslessthan3inchesindiameter.Groundapplicationrequiresminimumof10gallons/A.
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Preplant/BurndownHerbicidesforWeedManagementinFieldCorn(cont.)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Fierce76WDG(flumioxazin+pyroxasulfone)
3.0‐4.5oz 0.063‐0.094lb
+0.080‐0.120lb
1415
‐‐‐ 12hours
Comments:ApplyFIERCE7to30dayspriortoplantingfieldcorn.Donotapplymorethan4.5oz/AofFIERCEduringasinglegrowingseason.AddaCOCormethylatedseedoilat1to2pt/Aornon‐ionicsurfactantat0.25%v/v.Useonlyonno‐tillorminimumtillagefieldswherelastyear’scropresiduehasnotbeenincorporatedintothesoil.Donotuseonpopcorn,sweetcorn,orcorngrownforseed.TankmixpartnersincludeGLYPHOSATE,2,4‐DLVE,ATRAZINE,BASIS, EXPRESS, HORNET, PYTHON, RESOLVE, SIMAZINE, DICAMBA, PARAQUAT, or WEEDMASTER. Sprayequipment,includingmixingvesselsandnursetanks,mustbecleanedeachdayfollowingaFIERCEapplication.
KeystoneNXT5.6SC(acetochlor+atrazine)
1.4‐3.0qt 1.09‐2.33lb
+0.88‐1.88lb
155
60days 12hours
Comments:KEYSTONENXTisaRESTRICTEDUSEPESTICIDE.ApplyKEYSTONENXTupto45dayspriortoplantingfield corn;However, planting shouldbedoneas close aspossible to the timeof applicationofKEYSTONENXT toprovideeffectiveweedcontrolduringcriticalearlyseasoncorndevelopment.Forcontrolofemergedweedsatthetimeofapplication,tankmixKEYSTONENXTwithGLYPHOSATE,LIBERTY,BANVEL,CLARITY,2,4‐D,orGRAMOXONE.DonotapplyKEYSTONENXT(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3.8qtperofKEYSTONENXTperseason.
Liberty280SL(glufosinate)Interline2.34SL
29‐36oz 0.53‐0.66lb
10
70days 12hours
Comments:Thoroughspraycoverageisessentialforoptimumperformance.Groundapplicationrequiresaminimumof15gallonsofwater/acre.Denseweedcanopiesrequire20to40gallonsperacre.Seelabelforfurtherapplicationinstructionsandtank‐mixpartners.
Glyphosateacidequivalent(ae)3lbae/gal4.17lbae/gal4.5lbae/gal
32‐47oz23‐45oz22‐32oz
0.75‐1.13lbae
9 ‐‐‐ 4hours
Comments:Apply in 10‐20 gal ofwater 2 to 4weeks prior to your anticipated planting date to control existinggroundcover.Inmostfields,afollow‐upapplicationofPARAQUATwillbeneededatplanting.Consultproductlabeltodetermineifasurfactantisneeded.
2,4‐DLVE(various)
1.0‐2.0pt 0.5‐1.0lb
4
‐‐‐ 48hours
Comments:Apply7to14dayspriortoplantingfieldcorn.Donotuseonalight,sandysoil,orwheresoilmoistureislimitingweedgrowth.Veryeffectiveforcutleafeveningprimrosecontrol.Canbetank‐mixedwithotherburndownherbicides(seelabel).
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Preplant/BurndownHerbicidesforWeedManagementinFieldCorn(cont.)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
GramoxoneSL2E(paraquat)Firestorm3SParazone3S
2.0‐4.0pt
1.3‐2.7pt
0.5‐1.0lb
22
‐‐‐ 12hours
Comments:GRAMOXONEisaRESTRICTEDUSEPESTICIDE.Applyatplantingasafollow‐uptoanearlierapplicationofGLYPHOSATE.Providesbettercontrolofchickweed,henbit,purpledeadnettle,andcutleafeveningprimrosethanGLYPHOSATE.AddNISat1qtper100galofspraysolution.Rainfastinterval=30minutes.
Hornet68.5WDG(flumetsulam+clopyralid)Stanza68.5WDG
4.0‐5.0oz 0.046‐0.057lb
+0.125‐0.156lb
24
85days 48hours14
Comments:ApplyHORNETupto30daysbeforeplantingcorn.Ifweedsarepresentattimeofapplication,tankmixHORNETwithPARAQUAT,GLYPHOSATE,or2,4‐D.AddCOCorNISat1.0‐2.0qtper100galofspraysolution.Rainfastinterval=2hours.
Leadoff33.4DF(rimsulfuron+thifensufluron)
1.5‐2.7oz 0.0157‐0.0282lb
0.0157‐0.0282lb
22
‐‐‐ 4hours
Comments:ApplyLEADOFFanytimeafterharvestuntilrightbeforeplantingcorn.LEADOFFtankmixpartnersmayincludeGLYPHOSATE,PARAQUAT,2,4‐DLVE,DICAMBA,orGLUFOSINATE.NoadditionalsurfactantisneedediftankmixedwithGLYPHOSATEorLIBERTYwithabuilt‐inadjuvantsystem.Otherwise,addNISat1qtper100galorCOCat1galper100galorMSOat0.5galper100galofspraysolutionplusanammoniumnitrogenfertilizer(AMSat2lb/AorUANat2qt/A).Donotapplypostemergencetocorn.
Resicore3.29SC(acetochlor+mesotrione+clopyralid)
2.25‐2.5qt
1.58‐1.75lb
+0.17‐0.19lb
+0.11‐0.12lb
15274
‐‐‐ 12hours
Comments:ApplyRESICOREupto28daysbeforeplantingcorn.RESICOREshouldbetankmixedwithGLYPHOSATE,PARAQUAT,GLUFOSINATE,and/or2,4‐Dforcontrolofexistingemergedweedsatthetimeofapplication.Donotapplymorethan3.25qtofRESICOREperacreperyear.DonotmakemorethantwoapplicationsofRESICOREperyear.DonotapplyRESICORE(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.
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Preplant/BurndownHerbicidesforWeedManagementinFieldCorn(cont.)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Sharpen2.85SC(saflufenacil)
2.0‐3.0floz 0.045‐0.067lb
14
80days 12hours
Comments:ApplySHARPEN14to30daysbeforeplantingcorn.ForoptimumSHARPENburndownactivity,addMSOat1galper100galofspraysolutionplusammoniumnitrogenfertilizer(UANat1.25‐2.5galsper100galorAMSat8.5‐17 lbs/100 gals). SHARPENmaybe tankmixedwithGLYPHOSATE, CLARITY,ATRAZINE, STATUS,HARNESS,HARNESSXTRA,VERDICT,PROWLH2O,OUTLOOK,GUARDSMANMAX,andGUARDSMANMAXLITE.DonotapplySHARPENaftercornemergenceorseverecropinjurywilloccur.Donotapplymorethan6.0floz(0.134lbai/A)ofSHARPENpercroppingseason.DonotapplySHARPENwhereanat‐plantingapplicationofanorganophoshateorcarbamateinsecticideisplannedorhasoccurredorseverecropinjurymayoccur.However,SHARPENmaybeappliedwhenAZTECorFORTRESSinsecticidesifappliedatplantingasaBAND,T‐BAND,orIN‐FURROW.SHARPENmaybeappliedwithallotherclassesofat‐plantinginsecticidesincludingpyrethroids,neonictinoids,andfipronil.Rainfastinterval=1hour.
SureStartII4.25(acetochlor+flumetsulam+clopyralid)
1.5‐3.0pt 0.703‐1.406lb
+0.023‐0.046lb
+0.071‐0.142lb
1524
85days 12hours
Comments:ApplySURESTARTIIupto14daysbeforeplantingcorn.Forenhancedcontrolofemergedweedsatthetimeofburndownapplication,SURESTARTIImaybetankmixedwithGLYPHOSATE,2,4‐D,LIBERTY,orGRAMOXONE.DonotapplySURESTARTII(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3pt/AofSURESTARTIIinasingleapplication.
ValorSX51WDG(flumioxazin)
2.0‐3.0oz 0.064‐0.096lb
14
‐‐‐ 12hours
Comments:Apply14to30dayspriortoplantingfieldcorn.Donotapplymorethan3oz/AofVALORSXduringasinglegrowingseason.Donotirrigatewhencornisemergingtothe2‐leafstage.Donotuseonpopcorn,sweetcorn,orcorngrownforseed.Canbetank‐mixedwithotherburndownherbicides(seelabel).
Verdict5.57EC(saflufencil+dimethenamid‐p)
10‐15floz 0.045‐0.067lb
+0.391‐0.586lb
1415
80days 12hours
Comments:ApplyVERDICT14to30daysbeforeplantingcorn.ForoptimumVERDICTburndownactivity,addMSOat1galper100galofspraysolutionplusammoniumnitrogenfertilizer(UANat1.25‐2.5galsper100galorAMSat8.5‐17lbs/100gals).VERDICTmaybetankmixedwithGLYPHOSATE,CLARITY,ATRAZINE,STATUS,andSHARPEN.DonotapplyVERDICTaftercornemergenceorseverecropinjurywilloccur.Donotapplymorethan0.134lbai/Asaflufenacilfromallproductsourcespercroppingseason.Donotapplymorethan25flozofVERDICTpercroppingseason.DonotapplyVERDICTwhereanat‐plantingapplicationofanorganophoshateor carbamate insecticide isplannedor hasoccurredor severe crop injurymayoccur.However, VERDICTmaybe appliedwhenAZTEC2.1%granular,AZTEC4.67Ggranular,orFORTRESS5GgranularinsecticidesisappliedatplantingasaBAND,T‐BAND,orIN‐FURROW. VERDICT may be applied with all other classes of at‐planting insecticides including pyrethroids,neonictinoids,andfipronil.
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Preplant/BurndownHerbicidesforWeedManagementinFieldCorn(cont.)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Zidua0.85WG(pyroxasulfone)
1.5‐3.0oz 0.080‐0.16lb
15
‐‐ 12hours
Comments: Apply ZIDUA 15 to 45 days before planting corn. ZIDUA tank mix partners include ATRAZINE,GLYPHOSATE,LIGHTNING,OUTLOOK,PROWLH2O,SHARPEN,andSTATUS.Oncoarsetexturedsoils,donotapplymorethan2.75oz/AofZIDUA(0.142lbai/Aofpyroxasulfone)percroppingseason.Onallothersoiltypes,donotapplymorethan5.0oz/AofZIDUA(0.266lbai/Aofpyroxasulfone)percroppingseason.
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WeedandCoverCropResponse toBurndown/PreplantHerbicides inConservationTillageFieldCorn1
ET2
Glyphosate2
Glyphosate+2,4‐D
2
Glyphosate+Atrazine2
Glyphosate+Clarity
2
Glyphosate+Direx
2
Glyphosate+Leadoff2
Glyphosate+Sharpen
2
Glyphosate+ValorSX2
Gramoxone2
Gramoxone+2,4‐D
2
Gramoxone+Clarity
2
Gramoxone+ValorSX2
Gramoxone+Direx
2
Liberty
2
barley,little F E E E E E E E E G G G G G G
bluegrass,annual G F F E F E E E E G G G G G P
buttercups G E E E E E E E E E E E E E E
chickweed,common G F G E GE GE E E E E E GE E E E
clovers P PF F F FG F G E F G G GE GE GE F
cudweed G E E E E E E E E FG FG FG FG FG G
dandelion P P E GE E GE E G G N E GE P GE FG
dock,curly P PF G G GE F F F G F FG GE P F G
eveningprimrose,cutleaf GE PF E E GE GE E E FG F E GE E GE G
geranium,Carolina GE FG E E E GE E E E GE E GE E E GE
henbit/deadnettle G F G E GE E E E E G GE E E GE G
horseweed(marestail) G E GE E E E GE E GE F GE E GE GE GE
mustard,wild G FG E GE G GE G E GE FG E G GE G GE
pansy,field G F F GE F G ‐‐‐ E F G G G G GE G
peanut,volunteer F F F F G F P GE FG P F GE F F GE
pepperweed,Virginia G G E GE GE GE E E G G GE G G GE G
radish,wild G FG GE GE GE GE G E GE G GE GE GE GE GE
ryegrass,Italian F G F GE F FG E E G FG FG FG FG G P
sorrel,red F E E E E E G G E E E E E E PF
spurry,corn G GE GE GE GE GE E E G FG G G G G ‐‐‐
swinecress G FG G G G G E E FG PF FG FG PF FG GE
vetch GE F E E E G E E FG G GE GE GE G GE
wheat/ryecovercrop P E E E E G E E E FG F F G G F1KeytoResponseRatings:E=excellentcontrol,90%orbetter;G=goodcontrol,80to90%;F=faircontrol70to80%;P=poorcontrol,lessthan70%;‐‐‐=InsufficientData.2HerbicideratesforburndownareAtrazineat1.0lb/A;ETat1.0oz/A;Glyphosateat0.75lbae/A(22oz/Aof4.5lbae/galor32oz/Aof3.0lbai/gal);2,4‐Dat1‐2pt/A;Clarityat8oz/A;Direxat1.6pt/A;Leadoffat1.5oz/A;Sharpenat1.0oz/A;Gramoxoneat3.0pt/A;ValorSXat2.0oz/A;andLibertyat29oz/A.
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WeedResponsetoSoilAppliedPreemergenceHerbicidesforCornWeedManagement1
Acuron
Anthem
Anthem
ATZ
Atrazine(ATZ)
Acetochlor
Acetochlor+ATZ
Alachlor
Alachlor+ATZ
BalanceFlexx
Corvus
Dimethenam
id‐p
Hornet
anoda,spurred G ‐‐‐ GE GE ‐‐‐ GE ‐‐‐ GE ‐‐‐ ‐‐‐ ‐‐‐ Gbarnyardgrass FG E E G E E E E E E E Pbeggarweed,Florida G ‐‐‐ E E F P ‐‐‐ E ‐‐‐ ‐‐‐ P FGbermudagrass P P P P P P P P P P P Pcitronmelon ‐‐‐ ‐‐‐ G G P G P G ‐‐‐ ‐‐‐ P ‐‐‐cocklebur,common G P GE GE P GE P GE F F P Ecrabgrass E E E G E E E E E E E Pcowpea E P E E P E P E GE GE P Gcrotalaria,showy ‐‐‐ P GE GE P GE P GE GE GE P Gcroton,tropic E P G G P G P G GE GE P Pcrowfootgrass E GE GE G E E E E E E E Pdayflower,Benghal GE GE GE F GE GE ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ F ‐‐‐eclipta GE G GE GE ‐‐‐ GE ‐‐‐ GE GE GE ‐‐‐ ‐‐‐goosegrass E GE GE G E E E E E E E Pjimsonweed E ‐‐‐ E E P E P E E E P GEjohnsongrass,seedling E ‐‐‐ ‐‐‐ P P P P P GE GE P Pjohnsongrass,rhizome P P P P P P P P P P P Plambsquarters,common ‐‐‐ ‐‐‐ E E F E FG E G G F Emorningglory,annual G P G G P G P G F F P FGnutsedge,purple P P P P P P P P P P P Pnutsedge,yellow FG P P P F FG F FG P P FG Ppanicum,fall E GE GE P E E E E GE GE E Ppanicum,Texas F F F P PF P PF PF F F PF PpigweedALS‐resistantDNA‐resistant
EEE
GEGEGE
EEE
EEE
GGG
EEE
GGG
EEE
EEE
EEE
GGG
EEE
poinsettia,wild ‐‐‐ ‐‐‐ GE GE P GE P GE G G P Gpurslane,common E ‐‐‐ E E G E G E G G G ‐‐‐pusley,Florida E G E E GE E GE E ‐‐‐ ‐‐‐ GE Gragweed,common E ‐‐‐ E E P E P E GE GE P Gryegrass,annual ‐‐‐ GE GE ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ Psandbur,field GE GE GE P FG FG FG FG F F FG Psenna,coffee GE ‐‐‐ FG FG P FG P FG G G P ‐‐‐sesbania,hemp GE ‐‐‐ FG FG P FG P FG G G P ‐‐‐sicklepod E F G G P G P G GE GE P FGsida,prickly E ‐‐‐ E E P E P E G G F Esignalgrass,broadleaf GE FG FG P G G FG FG G G G Psmartweed,Pennsylvania GE P GE GE P GE P GE GE GE P Gspurge GE ‐‐‐ GE GE ‐‐‐ GE ‐‐‐ GE GE GE ‐‐‐ Gstarbur,bristly GE ‐‐‐ GE GE PF GE P GE G G P Gvelvetleaf E P G G P G P G G G P Evol.RRsoybean GE P GE E P GE P GE GE GE P Evol.peanut G P GE E P GE P GE GE GE P GE1KeytoResponseRatings:E=excellentcontrol,90%orbetter;G=goodcontrol,80to90%;F=faircontrol,70to80%;P=poorcontrol,lessthan70%;‐‐‐=InsufficientData.
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WeedResponsetoSoilAppliedPreemergenceHerbicidesforCornWeedManagement(cont)1
Instigate
Lumax/Lexar
S‐Metolachlor
S‐Metolachlor+ATZ
Princep
Prowl
Python
Resolve
Sharpen
SureStartII
Verdict
Zidua
anoda,spurred ‐‐‐ GE ‐‐‐ GE G ‐‐‐ G ‐‐‐ ‐‐‐ GE ‐‐‐ ‐‐‐barnyardgrass GE GE E E G GE P G P GE E Ebeggarweed,Florida ‐‐‐ E F E G ‐‐‐ FG ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐bermudagrass P P P P P P P P P P P Pcitronmelon ‐‐‐ ‐‐‐ P G F ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ G ‐‐‐ ‐‐‐cocklebur,common G GE P GE G P E G G GE G Pcrabgrass GE GE E E G GE P G P GE E Ecowpea ‐‐‐ E P E G P G ‐‐‐ E E G Pcrotalaria,showy ‐‐‐ GE P GE G ‐‐‐ G G G GE P Pcroton,tropic G G P G G P P ‐‐‐ ‐‐‐ GE ‐‐‐ Pcrowfootgrass GE E E E G E P G P E E GEdayflower,Benghal ‐‐‐ ‐‐‐ GE GE ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ F GEeclipta G GE ‐‐‐ GE GE G G ‐‐‐ GE GE GE Ggoosegrass GE ‐‐‐ E E G E P F P E E GEjimsonweed GE E P E E P GE G G G G ‐‐‐johnsongrass,seedling GE F F F P E P F P P P ‐‐‐johnsongrass,rhizome P P P P P P P P P P P Plambsquarters,common G E G E E G E G E E E ‐‐‐morningglory,annual FG G P G G P FG F G FG G Pnutsedge,purple P P P P P P P P P P P Pnutsedge,yellow P FG FG FG P P P P P P FG Ppanicum,fall GE GE E E G FG P G P E E GEpanicum,Texas GE PF PF P P PF P F P PF PF FpigweedALS‐resistantDNA‐resistant
GGG
EEE
GGG
EEE
EEE
FGFGP
EPE
FGPFG
EEE
EEE
EEE
GEGEGE
poinsettia,wild ‐‐‐ ‐‐‐ P GE G P G ‐‐‐ ‐‐‐ GE ‐‐‐ ‐‐‐purslane,common G G G E ‐‐‐ GE ‐‐‐ ‐‐‐ ‐‐‐ GE G ‐‐‐pusley,Florida G ‐‐‐ GE E G E G ‐‐‐ F GE F Gragweed,common G E PF E E P G F ‐‐‐ G ‐‐‐ ‐‐‐ryegrass,annual GE ‐‐‐ G G E FG P F P ‐‐‐ ‐‐‐ GEsandbur,field GE FG FG FG G GE P ‐‐‐ ‐‐‐ GE GEsenna,coffee G ‐‐‐ P F ‐‐‐ P FG G ‐‐‐ FG ‐‐‐ ‐‐‐sesbania,hemp G ‐‐‐ P F ‐‐‐ P FG G ‐‐‐ FG ‐‐‐ ‐‐‐sicklepod GE G P G G P FG FG GE G GE Fsida,prickly ‐‐‐ FG P E E P E F G G F ‐‐‐signalgrass,broadleaf FG FG FG FG P GE P F P FG FG FGsmartweed,Pennsylvania G GE P GE G P G G G G P Pspurge G G ‐‐‐ GE G G ‐‐‐ ‐‐‐ GE GE G Gstarbur,bristly ‐‐‐ G P GE GE P G ‐‐‐ P G P ‐‐‐velvetleaf GE G P G G P E F G E G Pvol.RRsoybean G G P GE G P P P ‐‐‐ GE ‐‐‐ Pvol.peanut F G P GE G P P P ‐‐‐ GE ‐‐‐ P1KeytoResponseRatings:E=excellentcontrol,90%orbetter;G=goodcontrol,80to90%;F=faircontrol,70to80%;P=poorcontrol,lessthan70%;‐‐‐=InsufficientData.
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ImportantGroundandSurfaceWaterConsiderationsRegardingtheUseofAtrazineandSimazineContainingHerbicideProducts.
ATRAZINEandSIMAZINEusersarestronglyencouragedtofollowlabelguidelines,discussedbelow,toshareintheresponsibilityofpreservingthefutureuseofATRAZINEandSIMAZINE.TheserestrictionsapplytoallformulationsofATRAZINEandSIMAZINE,andallpre‐mixpackageproductsthatcontainATRAZINEandSIMAZINE.ApplicationRateRestrictions:Forsoilsthatarenotdefinedashighlyerodible,themaximumuserateforATRAZINEis2.0lbai(activeingredient)peracreandforSIMAZINEis2.0lbaiperacreperseason.Forsoilsclassifiedashighlyerodible(asdefinedbyNRCS), Ifconservationtillage ispracticedwithat least30percentcropresiduecoverageatplanting,themaximumuserateis2.0lbaiperacreforATRAZINEandSIMAZINE.Ifcropresiduecoverageislessthan30percent,thenthemaximumrateforATRAZINEandSIMAZINEis1.6lbaiperacre.IfATRAZINEwasnotappliedpriortocornemergence,thenthetotalamountappliedshouldnotexceed2.0lbaiperacre.IfATRAZINEwasappliedtoafieldpreemergence,thenthetotalamountofATRAZINEshouldnotexceed2.5lbaiperacrepercalendaryear.ThetotalamountofSIMAZINEshouldnotexceed2.0lbaiperacrepercalendaryear.Setbacks:Operationsthatinvolvemixing,loading,rinsing,orwashingATRAZINEorSIMAZINEwithin50feetofwells(including abandoned wells, drainage wells, or sink holes), rivers, intermittent streams, lakes, or reservoirs isprohibited. This restriction does not apply to operations within a properly designed impervious pads and dikedmixing/loadingareas.ATRAZINEorSIMAZINEmustnotbeappliedaeriallyorbygroundequipmentwithin66feetofpointswherefieldsurfacewaterentersperennialorintermittentstreamsandriversorwithin200feetaroundnaturalorimpoundedlakesandreservoirs.IfATRAZINEorSIMAZINEisappliedtohighlyerodibleland,the66footbufferorsetbackfromrunoffentrypointsmustbeplantedtocrop,seededwithgrass,orothersuitablecrop.IfATRAZINEorSIMAZINEisappliedtotile‐terracedfieldscontainingstandpipes,thenusersareadvisedtofollowonethe following restrictions: 1) donot applyATRAZINEor SIMAZINEwithin66 feet of standpipes; 2)After applyingATRAZINEorSIMAZINEtotheentirefield,immediatelyincorporateittoadepthof2‐3inches;or3)ApplyATRAZINEorSIMAZINEtotheentirefieldunderconservationtillagepracticeswherehighcropresiduelevelsarepresent.ExamplesofHerbicideProductsthatContainAtrazineorSimazineTradeName ActiveIngredient(s) TradeName ActiveIngredient(s)Aatrex atrazine HarnessXtra acetochlor+atrazineBicepIIMagnum atrazine+s‐metolachlor Guardsman
MAXdimethenamid‐p+atrazine
BicepLiteIIMagnum
atrazine+s‐metolachlor Keystone acetochlor+atrazine
Bullet alachlor+atrazine Lariat alachlor+atrazineCinchATZ s‐metolachlor+atrazine Lumax s‐metolachlor+atrazine+
mestrioneDegreeXtra acetochlor+atrazine Marksman dicamba+atrazineExpert glyphosate+s‐metolachlor+
atrazinePrincep simazine
Fultime acetochlor+atrazine SteadfastATZ nicosulfuron+rimsulfuron+atrazine
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Glyphosate‐ResistantPalmerAmaranthPrograms–FieldCornPalmeramaranthpopulationshavebeendocumentedinSouthCarolinatoberesistanttoacetolactatesynthase(ALS)inhibitingherbicides(i.e.,Accent,Resolve,Steadfast,andOption)anddinitroaniline(yellow)herbicides(i.e.,Prowl),and glyphosate (i.e., Roundup,Touchdown). The following table is designed to aidproducers inmanaging and/orpreventingherbicide‐resistantPalmeramaranthpopulationsincorn.SeedProgram HerbicideProgram
PRE1 POST2 POST‐DIRECTED3
ConventionalHybrids
atrazine,Harness,BicepIIMagnum,CinchATZ,
Guardsman,Lexar,Corvus,Verdict,Sharpen,Bullet,Breakree,BalanceFlexx,
Acuron
dicamba,Status,2,4‐D,Impact,Laudis,Callisto,Capreno,atrazine,Armezon,BalanceFlexx,
Acuron
2,4‐D,Evik,Lorox,Status,
Clarity
NoPREapplied
dicamba,Laudis,Callisto,ImpactCorvus,Capreno,BalanceFlexx,Marksman,Buctril
+atrazine
Liberty‐LinkHybrids
atrazine,Harness,BicepIIMagnum,CinchATZ,
Guardsman,Lexar,Corvus,Verdict,Sharpen,Bullet,Breakree,BalanceFlexx
Liberty+BanvelorClarity,Liberty+dicambaLiberty+2,4‐D
Liberty+ArmezonLiberty+Warrant 2,4‐D,
Evik,Lorox,Status,Clarity
NoPREapplied
Liberty+atrazine+CallistoLiberty+dicamba
Liberty+atrazine+LaudisLiberty+atrazine+ImpactLiberty+atrazine+Warrant
RoundupReadyHybrids
atrazine,Harness,BicepIIMagnum,CinchATZ,
Guardsman,Lexar,Corvus,Verdict,Sharpen,Bullet,Breakree,BalanceFlexx
glyphosate+atrazineglyphosate+dicambaglyphosate+2,4‐D
glyphosate+Armezonglyphosate+Warrant
HalexGT 2,4‐D,Evik,Lorox,Status,
Clarity
NoPREapplied
glyphosate+s‐metolachlor+atrazineglyphosate+atrazine+Laudis
glyphosate+s‐metolachlor+Callistoglyphosate+atrazine+Impactglyphosate+atrazine+Warrant
HalexGT1PRE=Preemergence.Applytosoilsurfaceafteralltillageandplantinghasoccurred.2POST=Postemergence.Consultindividualproductlabelsforcornheightrestrictions,e.g.,atrazineappliedPOSTlimitedtocorn12inchestallorless.3Consultindividualproductlabelregardingspecificcornheightrestrictions.
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PreemergenceHerbicidesforWeedManagementinFieldCorn
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Acuron3.44SC(s‐metolachlor+atrazine+mesotrione+bicyclopyrone)
2.5qt 1.34lb+
0.625lb+
0.15lb+
0.038lb
1552727
60days 24hours
Comments:ACURONisaRESTRICTEDUSEPESTICIDE.Providesgoodtoexcellentcontrolofmostgrassandbroadleafweeds.TankmixpartnersincludeATRAZINE,PRINCEP,GLYPHOSATE,andWARRIOR.
Aatrex4SC(atrazine)
1.6‐2.0qt 1.6‐2.0lb
5
60days 12hours
Comments:ATRAZINEisaRESTRICTEDUSEPESTICIDE.Usetocontrolmostlybroadleafweedsandafewgrasses.TankmixwithACETOCHLOR,S‐METOLACHLOR,ALACHLOR,orDIMETHENAMID‐Pforimprovedgrasscontrol.
Acetochlor(Breakfree6.4ECHarness7EHarness20GSurpass6.4ECSurpassNXT7ECTopNotch3.2MEDegree3.8ME)
1.5‐2.5pt1.5‐3.0pt6.0‐10.0lb1.5‐2.5pt1.25‐2.25pt2.0‐3.0qt2.25‐4.25pt
1.2‐2.0lb1.3‐2.6lb1.2‐2.0lb1.2‐2.0lb1.1‐2.0lb1.6‐2.4lb1.1‐2.0lb
15 120days 12hours
Comments:HARNESSisaRESTRICTEDUSEPESTICIDE.Controlsmostannualgrasses(exceptTexaspanicum)andsmall‐seededbroadleafweeds.ACETOCHLORcanbetank‐mixedwithATRAZINEforimprovedbroadleafweedcontrol.DonotapplyACETOCHLORtothefollowingsoilswithin150ft(50ftforSURPASS/NXT)ofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3lbaiACETOCHLORperacreperyear.
Alachlor(Micro‐Tech4ME)
2.0‐2.75qt
2.0‐2.75lb 15 None 12hours
Comments: MICRO‐TECH is a RESTRICTED USE PESTICIDE. Controls small seeded annual grasses (except Texaspanicum)andbroadleafweeds.
Anthem2.15EC(pyroxasulfone+fluthiacet‐methyl)
5.0‐10.0floz 0.082‐0.163lb
+0.003‐0.005lb
1514
70days 12hours
Comments:Providessmallseededgrassandbroadleafweedcontrol.Applicationrateisbasedonsoiltexture:coarsetextured5.0‐8.0floz/A;mediumtextured6.5‐10.0floz/A.TankmixwithATRAZINE,BALANCE,orHORNETforcontrolofadditionalweedspecies.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
Herbicide
Rate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation Active
Ingredient
AnthemATZ4.505SC(atrazine+pyroxasulfone+fluthiacet‐methyl)
1.75‐2.5pt 0.88‐1.25lb
+0.106‐0.152lb
+0.003‐0.004lb
51514
60days 12hours
Comments:ANTHEMATZisaRESTRICTEDUSEPESTICIDE.Applicationrateisbasedonsoiltexture:coarsetextured1.75‐2pt/A;mediumtextured2.0‐2.5pt/A.Providessmallseededgrassandbroadleafweedcontrol.TankmixwithATRAZINE,BALANCE,orHORNETforcontrolofadditionalweedspecies.
BalanceFlexx2SC(isoxaflutole)+atrazine4SC
6.0floz+
1.5qt
0.094lb
+1.5lb
275
45days 12hours
Comments:BALANCEFLEXXisaRESTRICTEDUSEPESTICIDE.ApplyBALANCEFLEXXduringplanting(behindtheplanterafterfurrowclosure)orafterplanting,butbeforeweedsemerge.Failuretothoroughlycloseandfirmtheseedfurrowmayallowherbicidetodirectlycontactseedwhichcancauseinjury.Controlsglyphosate‐andALS‐resistantPalmeramaranth.Add1.5lb/AATRAZINEtoenhanceresidualcontrolofweeds.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseBALANCEFLEXXonsoilswherethesubsoilisloamysandorsand(i.e.,noclaysubsoil).
BicepIIMagnum5.5SC(s‐metolachlor+atrazine)
1.3‐2.1qt
0.78‐1.27lb
+1.0‐1.63lb
155
60days 24hours
Comments:BICEPIIMAGNUMisaRESTRICTEDUSEPESTICIDE.Applicationuserateisbasedonsoiltexture:Sandysoils=1.3‐1.6qt/A,Mediumtexturedsoils=1.6‐2.1qt/A.Usehigherrateforeachsoiltypeifapplyinginareducedtillagesystem.Availableasapre‐mixwithglyphosate(EXPERT).
BreakfreeATZ5.25SC(acetochlor+atrazine)
2.2‐2.8qt
1.65‐2.1lb
+1.24‐1.58lb
156
60days 12hours
Comments: BREAKFREEATZ is aRESTRICTEDUSEPESTICIDE.Applicationuse rate is basedon soil texture andorganicmattercontent:Sandysoils=2.2‐2.6qt/A,mediumtexturedsoils=2.4‐2.8qt/A.Usehigherrateforeachsoiltextureifapplyinginareducedtillagesystem.DonotapplyBREAKFREEATZtothefollowingsoilswithin150ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3lbaiACETOCHLORperacreperyear.DonotapplyACETOCHLORthroughanyirrigationsystemorusingaerialapplicationequipment.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Bullet4MELariat4EC(alachlor+atrazine)
2.5‐3.75qt
1.56‐2.34lb+
0.94‐1.41lb
155
60days 12hours
Comments:BULLETandLARIATareRESTRICTEDUSEPESTICIDES.Applicationrateisbasedonsoiltypeandorganicmatter:Sandysoils=2.5‐3.0qt/A,mediumtexturedsoils=3.0‐3.75qt/A.Usehigherrateforeachsoiltypeifapplyinginareducedtillagesystem.
Corvus2.63SC(thiencarbazone+isoxaflutole)+atrazine4SC
3.33floz+
1.0qt
0.012lb
+0.049lb
+1.0lb
2275
45days 12hours
Comments: CORVUS is aRESTRICTEDUSEPESTICIDE. Apply CORVUS during planting (behind the planter afterfurrowclosure)orafterplanting,butbeforeweedsemerge.Failuretothoroughlycloseandfirmtheseedfurrowrowmayallowherbicidetodirectlycontactseedwhichcancauseinjury.Controlsglyphosate‐andALS‐resistantPalmeramaranth,sicklepod,andpricklysida.Add1.0lb/AATRAZINEtoenhanceresidualcontrolofweeds.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseCORVUSonsoilswherethesubsoilisloamysandorsand(i.e.,noclaysubsoil).
CinchATZ5.5SC(s‐metolachlor+atrazine)
2.6‐3.2pt
0.78‐0.96lb
+1.0‐1.24lb
155
60days 24hours
Comments:CINCHATZisaRESTRICTEDUSEPESTICIDE.Applicationrateisbasedonsoiltype:Sandysoils=2.6pt/A,mediumtexturedsoils=3.2pt/A.Usehigherrateforeachsoiltypeifapplyinginareducedtillagesystem.
Dimethenamid‐p(Outlook6EC)
10‐16oz
0.47‐0.75lb 15 40days 12hours
Comments:Controlsmostannualgrasses(exceptTexaspanicum)andsomebroadleafweeds.DIMETHENAMID‐Pmaybetank‐mixedwithATRAZINEorSIMAZINE.
FulTimeNXT4.04SC(acetochlor+atrazine)
2.0‐3.7qt 1.35‐2.50lb
0.67‐1.24lb
155
60days 12hours
Comments:FULTIMENXTisaRESTRICTEDUSEPESTICIDE.TheapplicationrateofFULTIMENXTisbasedonorganicmattercontentofthesoil:Forsoilswithlessthan1.5%organicmatter,applicationraterangeis2.0‐2.9qt/A.Forsoilswith1.5%organicmatterormore,theapplicationraterangeis2.3‐3.7qt/A.Useonlyonsorghumseedtreatedwithasafener.DonotapplyFULTIMEtothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3lbaiACETOCHLORperacreperyear.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Hornet68.5WDG(flumetsulam+clopyralid)Stanza68.5WDG
4.0‐5.0oz 0.046‐0.057lb
+0.125‐0.156lb
24
85days 48hours
Comments:ApplyHORNETatthetimeofplantingorafterplanting,butpriortocroporweedemergence.Cornmustbeplantedaminimumof1.5inchesdeep.ApplicationofHORNETWDGorSTANZAonsoilswithlessthan1.5%organicmattermay result in crop injury. Soil applied organophosphate insecticides should be applied in a T‐band or a band to avoidpotentialcropinjury.DonotapplyHORNETWDGorSTANZAifCOUNTER(terbufos)orTHIMET(phorate)insecticideswereappliedpreviously.OthercorninsecticidesshouldbeappliedinaT‐bandtoavoidinjury.Donotplantcottonwithin18monthsofapplication.
Instigate45.8WDG(rimsulfuron+mesotrione)
6.0oz 0.034lb
+0.34lb
227
None 12hours
Comments:ApplyINSTIGATEaftercornplantingbutbeforecropemergence.SeedfurrowmustbefirmlyclosedsothatINSTIGATEspraydoesnotcontacttheseed.Donotapplymorethan0.0625lbaiofRIMSULFURON(i.e., fromLEADOFF,PREQUEL, REALM Q, or STEADFAST Q) during the crop year. Do not apply COUNTER (terbufos) within 60 days of apreemergenceorpreplantapplicationofINSTIGATE.DonotapplyINSTIGATEpreemergencetocoarse‐texturedsoils(sand,loamysand,orsandyloam)withlessthan1%organicmatter.INSTIGATEmaybetankmixedwithATRAZINE,GLYPHOSATE,DICAMBA,2,4‐D,CINCH,orBREAKFREE.
KeystoneNXT5.6SC(acetochlor+atrazine)
1.4‐3.0qt 1.09‐2.33lb
+0.88‐1.88lb
155
60days 12hours
Comments: KEYSTONE NXT is a RESTRICTED USE PESTICIDE. Apply KEYSTONE NXT after planting (or after cornemergenceupto11inchesinheight).PlantingshouldbedoneascloseaspossibletothetimeofapplicationofKEYSTONENXTtoprovideeffectiveweedcontrolduringcriticalearlyseasoncorndevelopment.Donotapplymorethan3.8qtperofKEYSTONENXTperseason.KEYSTONENXTmaybe tankmixedwithAIM,ATRAZINE,BALANCEPRO,BALANCEFLEXX,BANVEL, CALLISTO, CALLISTO XTRA, CLARITY, DISTINCT, DURANGO DMA, HORNET WDG, LINEX 4L, LOROX DF,MARKSMAN,PRINCEP,PYTHONWDG,RESOURCE,or2,4‐D.
Lexar3.7SC(s‐metolachlor+mesotrione+atrazine)
3.0qt 1.31lb+
0.17lb+
1.31lb
15275
60days 24hours
Comments:LEXARisaRESTRICTEDUSEPESTICIDE.ApplyLEXARafterplanting(oraftercornemergenceupto12inchesinheight).Donotapplymorethan3.5qtperacreofLEXARperseason.LEXARmaybetankmixedwith2,4‐D,ATRAZINE,PRINCEP,GRAMOXONE,GLYPHOSATE,LIBERTY,andWARRIOR.Conductatankmixcompatabilitytesteachtime2,4‐Disadded to the tankmixturewithLEXAR.Temporarycorn injurymayoccur ifLEXAR isapplied toemergedcorn thathasreceived an at‐plant application of an organophosphate insecticide (except COUNTER). Do notmake a postemergenceapplicationofLEXARtoemergedcornwithanyorganophosphateorcarbamateinsecticide,orseverecropinjurymayoccur.DonotapplyasoloHPPDinhibitorpostemergence(i.e.,CALLISTO,IMPACT,orLAUDIS)togroundthathasbeentreatedwithLEXARinthesameseason.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Lumax3.95SC(s‐metolachlor+mesotrione+atrazine)
2.5qt 1.68lb+
0.17lb+
0.63lb
15275
60days 24hours
Comments:LUMAXisaRESTRICTEDUSEPESTICIDE.ApplyLUMAXafterplanting(oraftercornemergenceupto12inchesin height). Do not applymore than 3.0 qt per acre of LUMAX per season. LUMAXmay be tankmixedwith ATRAZINE,PRINCEP,GRAMOXONE,GLYPHOSATE,LIBERTY,andWARRIOR.Tankmixeswith2,4‐Dareallowedbutshouldbedonewithextreme care with regard to compatability beforemixing a load. 2,4‐D batches vary greatly and should be tested forcompatabilityeachtimeawaterorcarriersource,waterorcarriertemperature,productsource,ortankmixturerecipeischanged.
ProwlH2O3.8CS(pendimethalin)Prowl3.3EC
1.55‐3.13pt
1.8‐3.6pt
0.74‐1.49lb
0.74‐1.49lb
3
21days 24hours
Comments:Donotapplypendimethalinpreplantincorporatedorseriouscorninjurymayresult.Plantcornatleast1.5in.deep.Cornseedmustbecompletelycoveredwithsoil.Applyafterplantingbeforeemergenceofweeds.Usethehigherrateson fine‐textured soils. In case of stand failure, corn seed should be replanted below the herbicide treated zone. AddATRAZINEat1.0to2.0qt/Aforcontrolofbroadleafweeds.
Python80WDG(flumetsulam)
1.0oz 0.05lb
2
85days 12hours
Comments:ForareaswhereATRAZINEcannotbeusedorinfieldspronetofloodingwheresoybeansmaybere‐planted.Plant corn at least 1.5" deep. Mix with a preemergence grass herbicide and apply on the surface. Soil appliedorganophosphateinsecticidesshouldbeappliedinaT‐bandorabandtoavoidpotentialcropinjury.DonotapplyPYTHONifCOUNTERorTHIMETinsecticideswereappliedpreviously.OthercorninsecticidesshouldbeappliedinaT‐bandtoavoidinjury.Donotplantcottonwithin18monthsofapplication.
Resicore3.29SC(acetochlor+mesotrione+clopyralid)
2.25‐2.5qt
1.58‐1.75lb
+0.17‐0.19lb
+0.11‐0.12lb
15274
‐‐‐ 12hours
Comments:ApplyRESICOREafterplantingcornintoacleanseedbed.RESICOREmaybetankmixedwithATRAZINEforenhanceresidualbroadleafweedactivity.Donotapplymorethan3.25qtofRESICOREperacreperyear.DonotmakemorethantwoapplicationsofRESICOREperyear.DonotapplyRESICORE(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.
Resolve25DF(rimsulfuron)
0.5‐2.0oz 0.008‐0.031lb
2
30days 4hours
Comments:Controlsmostannualgrassesandbroadleavesincludingbroadleafsignalgrass.Forcontrolofemergedweedsatthetimeofapplication,addNISat1qt/100galorCOCat1gal/100galofspraysolutionplus2qt/AofUAN(28‐32%N)or2lb/AofspraygradeAMS.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
(s)‐metolachlor
(Dual8E/IIDual25G/IIGMag.DualMag.7.62ECDualIIMag.7.64ECCinch7.64EC)
1.5‐2.0pt6.0‐8.0lb1.0‐1.33pt1.0‐1.33pt1.0‐1.33pt
1.5‐2.0lb1.5‐2.0lb0.96‐1.27lb0.96‐1.27lb0.96‐1.27lb
15 30days 24hours
Comments: METOLACHLOR and S‐METOLACHLOR can be tank mixed with ATRAZINE. Generic formulations ofMETOLACHLORarealsoavailable.DUALIIandDUALIIMAGNUMcontainasafenerthathelpsreducethepossibilityofinjuryfromS‐METOLACHLORapplications.
Sharpen2.85SC(saflufenacil)
2.0‐3.0floz 0.045‐0.067lb
14
80days 12hours
Comments:ApplySHARPENafterplantingbutbeforecropemergence.Forcontrolofweedsthatareemergedattimeofplanting,addMSOat1galper100galofspraysolutionplusammoniumnitrogenfertilizer(UANat1.25‐2.5galsper100 gal or AMS at 8.5‐17 lbs/100 gals). SHARPENmay be tankmixed with GLYPHOSATE, CLARITY, ATRAZINE,STATUS,HARNESS,HARNESSXTRA,VERDICT,PROWLH2O,OUTLOOK,GUARDSMANMAX,andGUARDSMANMAXLITE.DonotapplySHARPENaftercornemergenceorseverecropinjurywilloccur.Donotapplymorethan6.0floz(0.134 lb ai/A of saflufenacil) of SHARPEN per cropping season. Do not apply SHARPEN where an at‐plantingapplicationofanorganophoshateorcarbamateinsecticideisplannedorhasoccurredorseverecropinjurymayoccur.However,SHARPENmaybeappliedwhenAZTECorFORTRESSinsecticidesifappliedatplantingasaBAND,T‐BAND,or IN‐FURROW. SHARPENmay be appliedwith all other classes of at‐planting insecticides including pyrethroids,neonictinoids,andfipronil.
SureStartII4.25(acetochlor+flumetsulam+clopyralid)
1.5‐3.0pt 0.703‐1.406lb
+0.023‐0.046lb
+0.071‐0.142lb
1524
85days 12hours
Comments: SURESTART II is a RESTRICTED USE PESTICIDE. Apply SURESTART II after planting (or after cropemergenceupto11inchesinheight)intoacleanseedbed.Plantcornatleast1.5”deep.UseofSURESTARTIIonsoilswithlessthan1.5%organicmattermayresultincropinjury.IfanALSherbicidesuchasCANOPY,CLASSIC,PURSUIT,SCEPTER, or SQUADRON was applied in the previous year, apply SURESTART II to corn only if the rotationalrestrictions have beenmet. Extended cold, wet conditions following application of SURESTART II to corn duringgerminationandearlycropdevelopmentmayresult incropinjury. Injurysymptomsincludingyellowingleavesorstuntingareusuallytemporaryandplantsrecoverwithoutaffectingyield.Soilappliedorganophosphateinsecticides(exceptTERBUFOSorPHORATE)mustbeappliedinaT‐bandorabandandnotin‐furrowtoavoidpotentialcropinjury.DonotuseCOUNTER(TERBUFOS)orTHIMET(PHORATE)insecticides.Othercornsoilinsecticidesfromotherclassesofchemistrymaybeappliedin‐furrow,T‐banded,orbanded.DonotapplySURESTARTII(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3pt/AofSURESTARTIIinasingleapplication.Donotplantcottonwithin18monthsofapplication.
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PreemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast
ModeofActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Verdict5.57EC(saflufencil+ dimethenamid‐p)
10‐15floz 0.045‐0.067lb
+0.391‐0.586lb
1415
80days 12hours
Comments:ApplyVERDICTaftercornplantingbutbeforecropemergence.Ifweedsarepresentatplanting,addMSOat1galper100galofspraysolutionplusammoniumnitrogenfertilizer(UANat1.25‐2.5galsper100galorAMSat8.5‐17lbs/100gals).VERDICTmaybetankmixedwithGLYPHOSATE,CLARITY,ATRAZINE,STATUS,andSHARPEN.DonotapplyVERDICTaftercornemergenceorseverecropinjurywilloccur.Donotapplymorethan0.134lbai/Asaflufenacilfromallproductsourcespercroppingseason.Donotapplymorethan25flozofVERDICTpercroppingseason.DonotapplyVERDICTwhereanat‐plantingapplicationofanorganophoshateor carbamate insecticide isplannedor hasoccurredor severe crop injurymayoccur.However, VERDICTmaybe appliedwhenAZTEC2.1%granular,AZTEC4.67Ggranular,orFORTRESS5GgranularinsecticidesisappliedatplantingasaBAND,T‐BAND,orIN‐FURROW. VERDICT may be applied with all other classes of at‐planting insecticides including pyrethroids,neonictinoids,andfipronil.
Warrant3.0ME(acetochlor)
1.5‐2.75qt 1.125‐2.063lb
15
‐‐‐ 12hours
Comments: ApplyWARRANT after corn planting but beforeweeds germinate. Provides residual control of smallseededbroadleavesandgrasses.TheoptimumrateofWARRANTis3pt/A.Donotexceed4.0qt/AofWARRANTperseason. Labeled tankmixpartners includeAIM, BALANCEPRO, BALANCEFLEXX, CALLISTO, CLARITY,DISTINCT,GLYPHOSATE,LINEX4L,LOROXDF,MARKSMAN,PRINCEP,RESOURCE,2,4‐D,ATRAZINE,andPARAQUAT.DonotapplyACETOCHLORwithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter; loamysandswith less than2%organicmatter;orsandy loamswith less than1%organicmatter.ApplicationofWARRANTfollowedbypoorenvironmentalconditions(coolwetsoilsand/orwaterloggedsoils)mayresultincropresponse.DonotuseWARRANTpreplant,at‐planting,orpreemergencetosweetcorn.
Zidua0.85WG(pyroxasulfone)
1.5‐3.0oz 0.080‐0.16lb
15
‐‐‐ 12hours
Comments:ApplyZIDUAafterplantingcornbutbeforecropemergence.Cornseedmustbeplantedatleast1inchdeep.ZIDUAtankmixpartnersincludeATRAZINE,GLYPHOSATE,LIGHTNING,OUTLOOK,PROWLH2O,SHARPEN,andSTATUS.Oncoarsetexturedsoils,donotapplymorethan2.75oz/AofZIDUA(0.142lbai/Aofpyroxasulfone)percroppingseason.Onallothersoiltypes,donotapplymorethan5.0oz/AofZIDUA(0.266lbai/Aofpyroxasulfone)percroppingseason.
South Carolina Pest Management Handbook for Field Crops - 2017
39
WeedResponsetoPostemergenceHerbicidesforFieldCornWeedManagement1 POSTEMERGENCE
Acuron
Accent/NIC‐IT
Aim
Atrazine(ATZ)
BalanceFlexx
Basagran
Banvel/Clarity
Beacon
Buctril
Cadet
Callisto
Capreno
Corvus
Distinct/Status
Expert2
Glyphosate2
HalexGT2
Impact/Arm
ezon
Keystone/Fultime4
Laudis
Libert y
3
anoda,spurred G FG P E ‐‐‐ P GE F ‐‐‐ ‐‐‐ G ‐‐‐ ‐‐‐ GE E GE GE ‐‐‐ E ‐‐‐ Gbarnyardgrass FG GE P GE GE G P P P G G GE E P E E E GE GE GE Gbeggarweed,Florida G G F G GE P G GE G G G GE GE GE E E E G G GE GEbermudagrass P P P P P P P P P P P P P P F F F P P P Pcitronmelon ‐‐‐ ‐‐‐ FG E GE P E ‐‐‐ G FG G GE GE E E E E ‐‐‐ E ‐‐‐ Ecocklebur,common G F G E G E E GE E G E E G E E E E E E E Ecowpea GE ‐‐‐ FG G GE P E ‐‐‐ FG FG GE GE GE E G G GE GE G GE Gcrabgrass E GE P G G P P P P P P GE G P E E E P G P Gcrotolaria,showy ‐‐‐ ‐‐‐ F GE GE P G ‐‐‐ G G ‐‐‐ GE GE GE G E E GE GE GE Gcroton,tropic E ‐‐‐ G G G GE GE ‐‐‐ FG G P G G GE G G G ‐‐‐ G ‐‐‐ Gcrowfootgrass E E P G GE P P P P P P ‐‐‐ ‐‐‐ P E E E P G P Gdayflower,Benghal F ‐‐‐ GE P ‐‐‐ FG P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ F F ‐‐‐ ‐‐‐ ‐‐‐ PFeclipta GE ‐‐‐ FG GE GE FG G ‐‐‐ G FG G GE GE GE E E E GE ‐‐‐ GE Ggoosegrass E E P G GE P P P P P P E G P E E E P G P Gjimsonweed E FG G E E E E E E G E E E E E GE GE GE E GE Gjohnsongrass,seedling E E P F G P P E P P P E G F E E E P F P GEjohnsongrass,rhizome P GE P P P P P G P P P P P P E E E P P P Flambsquarters,common GE P GE E GE FG E PF G G E GE GE E E E E GE E GE Emorningglory,annual G F E G G P E PF G G GE GE G E FG FG GE GE G GE Enutsedge,purple P P P P F P P P P P F F F P G G G P P P Pnutsedge,yellow FG P P PF F G P PF P P F F F P FG FG FG P PF P Ppanicum,fall E G P G G P P G P P P E G F E E E P G P Gpanicum,Texas F GE P F FG P P PF P P P GE F P E E E P F P Fpigweedglyphosate‐resistantALS‐resistant
EEE
GEGEP
GGG
EEE
EEE
PPP
GEGEGE
GEGEP
GGG
GGG
EEE
GEGEGE
EEE
EEE
EGE
EPE
EEE
GEGEGE
GEGEGE
GEGEGE
FGFGFG
poinsettia,wild ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ G ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ GE GE GE GE ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐purslane,common E ‐‐‐ G E ‐‐‐ P E ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ E G G G ‐‐‐ ‐‐‐ ‐‐‐ Gpusley,Florida E P FG G ‐‐‐ P G GE E ‐‐‐ ‐‐‐ GE ‐‐‐ G P P P ‐‐‐ G ‐‐‐ FGragweed,common E P F GE ‐‐‐ G E ‐‐‐ G ‐‐‐ F E ‐‐‐ E E GE GE F GE GE Eryegrass,annual P GE P FG GE P P FG F F P GE GE P E E E ‐‐‐ ‐‐‐ F FGsandbur,field GE E P F G P P PF P P P E F P GE GE GE P F P Gsenna,coffee GE FG P FG ‐‐‐ P E FG F ‐‐‐ F ‐‐‐ ‐‐‐ GE GE GE GE ‐‐‐ FG ‐‐‐ Gsesbania,hemp GE PF F FG GE P E P G G P ‐‐‐ ‐‐‐ E F F F G ‐‐‐ G GEsicklepod E PF P P GE P GE GE P G P P GE GE E E E GE G P Esida,prickly E P F GE G G G G F G P G G GE E G G ‐‐‐ GE E GEsignalgrass,broadleaf GE GE P F P P P P P P P GE ‐‐‐ P GE GE GE P F P Gsmartweed,Pennsylvania GE G G G ‐‐‐ E E G GE ‐‐‐ G GE ‐‐‐ E G G G GE G GE Espurge GE ‐‐‐ FG GE GE F G G GE G G GE GE GE E E E GE FG G Gstarbur,bristly GE ‐‐‐ P E ‐‐‐ E E ‐‐‐ F ‐‐‐ E ‐‐‐ ‐‐‐ GE E GE E ‐‐‐ E ‐‐‐ Gvelvetleaf E F E G E GE FG PF G F GE E E GE G G GE GE G GE GEvol.peanut FG G P G GE P G F P P P GE GE GE G G G GE G GE Evol.RRsoybean GE G P E E P E P F P G GE E GE E P G GE E GE G1KeytoResponseRatings:E=excellentcontrol,90%orbetter;G=goodcontrol,80to90%;F=faircontrol,70to80%;P=poorcontrol,lessthan70%;‐‐‐=InsufficientData.2Useonlyonglyphosate‐tolerant(RoundupReady,RoundupReady2,AgrisureGT)cornhybrids.3UseonlyonLibertyLinkcornhybrids.4Forcontroloflistedweeds,theseherbicidesmustbeappliedpriortoweedemergenceortankmixedwithafoliaractiveherbicide.
South Carolina Pest Management Handbook for Field Crops - 2017
40
WeedResponsetoPostemergenceHerbicidesforFieldCornWeedMgmt(cont)1 POSTEMERGENCE POSTEMERGENCE‐DIRECTED
Marksm
an
Option
Prowl4
Pursuit2
RealmQ
Resolve
ResolveQ
RevulinQ
Sandea
Sequence
3
Steadfast/Q
SteadfastATZ
Stinger
Warrant4
2,4‐D
Aim
Evik
Linex/Lorox
Gramoxone
2,4‐D
anoda,spurred GE ‐‐‐ P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ G P GE FG E P ‐‐‐ G P G ‐‐‐ GE Gbarnyardgrass P G GE P GE G GE G P E E E P GE P G E E G Pbeggarweed,Florida FG P ‐‐‐‐ P ‐‐‐ ‐‐‐ ‐‐‐ G P E ‐‐‐ ‐‐‐ GE ‐‐‐ P ‐‐‐ E E E Pbermudagrass P P P P P P P P P F P P P P P P P P P Pcitronmelon G P ‐‐‐‐ PF ‐‐‐ ‐‐‐ ‐‐‐ GE PF E ‐‐‐ G FG ‐‐‐ E G G E F Ecocklebur,common E G P E ‐‐‐ P PF E G E FG E GE P E G F E G Ecowpea E P ‐‐‐ P ‐‐‐ ‐‐‐ ‐‐‐ GE ‐‐‐ E ‐‐‐ G GE P E ‐‐‐ G G G Ecrabgrass,large P FG GE F G F F GE P E PF FG P GE P P E G G Pcrotolaria,showy ‐‐‐ P ‐‐‐ P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ P E ‐‐‐ ‐‐‐ GE ‐‐‐ G G E E G Gcroton,tropic GE P P PF ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐‐ ‐‐‐ GE ‐‐‐ GE G ‐‐‐ G ‐‐‐ G G G Gcrowfootgrass P F GE F F PF PF GE P E E GE P G P P E E G Pdayflower,Benghal ‐‐‐ P ‐‐‐ FG ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ P F ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ GE ‐‐‐ GE F GE GEeclipta G ‐‐‐ G GE GE G G G P E ‐‐‐ ‐‐‐ ‐‐‐ G G FG G G FG Ggoosegrass P F GE F F PF PF GE P E P GE P GE P P E E G Pjimsonweed E G P PF G P P GE ‐‐‐ GE G E G G E GE E E G Ejohnsongrassseedling P E G PF F PF PF GE P E E E P G P P E E G Pjohnsongrassrhizome P G P P P P P G P E G GE P P P P P P P Plambsquarters,common E G P P G PF PF GE PF GE F E P G E G E E FG Emorninggloryspp. E F P FG F P P G PF G G G P FG GE G G G G GEnutsedge,purple F P P G PF P P P G FG P P P P P P G F F Pnutsedge,yellow F P P F F P P F GE FG P PF P P PF P G F F PFpanicum,fall P G GE F G F F FG P E G G P GE P P E E G Ppanicum,Texas P F F PF G F F F P E G E P G P P GE GE E Ppigweedglyphosate‐resistantALS‐resistant
EEE
GGP
FFF
GGP
GEGEGE
PFPFP
PFPFP
GEGEGE
FGFGP
EPE
GGP
EEE
GGG
GGG
GEGEGE
GGG
EEE
GGG
GGG
GEGEGE
poinsettia,wild ‐‐‐ P ‐‐‐ E ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ E ‐‐‐ E ‐‐‐ ‐‐‐ ‐‐‐ FG ‐‐‐ ‐‐‐ FG ‐‐‐purslane,common ‐‐‐ P ‐‐‐ P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ E ‐‐‐ E ‐‐‐ ‐‐‐ G G E G G Gpusley,Florida GE P GE PF ‐‐‐ ‐‐‐ ‐‐‐ FG ‐‐‐ FG FG GE FG FG G FG E G FG Gragweed,common E G P P G P P FG GE GE FG E G F E P E E G Eryegrass,annual ‐‐‐ G GE P F G G G P E F F P GE P P E E G Psandbur,annual P F G P F F PF G P E PF PF P GE P P E E G Psenna,coffee GE P P FG ‐‐‐ ‐‐‐ ‐‐‐ G ‐‐‐‐ GE FG FG G ‐‐‐ G P E G G Gsesbania,hemp GE P P P G P P G FG GE ‐‐‐ E ‐‐‐ ‐‐‐ G P PF G PF Gsicklepod GE F P P F ‐‐‐ ‐‐‐ FG P GE PF E FG P E P E E G Esida,prickly E ‐‐‐ P GE F P P FG F GE P GE ‐‐‐ F G G E G FG Gsignalgrass,broadleaf P F GE P F PF PF F P E GE GE P GE P P GE G G Psmartweed,Pennsylvania E PF P G G P P G FG GE FG GE F P PF G G G FG PFspurge G ‐‐‐ G G ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ E ‐‐‐ GE G ‐‐‐ G F G G FG Gstarbur,bristly GE P P F ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ G GE ‐‐‐ E FG ‐‐‐ GE ‐‐‐ E G G GEvelvetleaf E G P G G PF PF G E G F G ‐‐‐ G G E G G GE Gvol.peanut E P P P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ P G G G FG P P P GE G P Pvol.RRsoybean E P P P ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ P G E E P FG P E P G GE1KeytoResponseRatings:E=excellentcontrol,90%orbetter;G=goodcontrol,80to90%;F=faircontrol,70to80%;P=poorcontrol,lessthan70%;‐‐‐=InsufficientData.2UseonlyonClearfieldcornhybrids.3Useonlyonglyphosate‐tolerant(RoundupReady,RoundupReady2,AgrisureGT)cornhybrids.4Forcontroloflistedweeds,theseherbicidesmustbeappliedpriortoweedemergenceortankmixedwithafoliaractiveherbicide.
South Carolina Pest Management Handbook for Field Crops - 2017
41
PostemergenceHerbicidesforWeedManagementinFieldCorn
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Aatrex4SC(atrazine)
1.0‐2.0qt 1.0‐2.0lb
5
None 12hours
Comments:ApplyATRAZINEtocornfromemergenceupto12inchesinheight.AddCOCat1galper100galofspraymix.IfATRAZINEwasnotappliedpriortocornemergence,upto2lbsai/Amaybeapplied.IfanearlierATRAZINEapplicationwasmade,thetotalATRAZINEappliedmaynotexceed2.5lbsai/acrepercalendaryear.Rainfastintervalnotindicatedonlabel(suggest1hourminimum).
Accent75DF(nicosulfuron)AccentQ54.5WDGNIC‐IT2EC
0.67oz
0.9oz
2.0oz
0.031lb
2
30days 4hours
Comments:ApplyACCENT,ACCENTQ,orNIC‐ITovertoporwithdropnozzlestocontrolrhizomejohnsongrass8to18"tall.ACCENT,ACCENTQ,andNIC‐ITmaybeappliedovertopcornupto20inchestall.Forcornfrom20to36inchestall,usedropnozzlestoavoidsprayingintothewhorloftheplant.AddNISat1qt/100galorCOCat1gal/100galofspraymixplus2qt/AofUANor2lb/AofAMS.DonotapplyACCENT,ACCENTQ,orNIC‐ITtocornpreviouslytreatedwithCOUNTER15G,orCOUNTER20CR(in‐furrow)unlesshybridisIR(imidazolinoneresistant).InjurymayoccurwhenACCENT,ACCENTQ,orNIC‐IT isapplied tocornpreviously treatedwithsoil‐appliedTHIMET,LORSBANorCOUNTER20CRT‐banded. In fieldsheavilyinfestedwithjohnsongrass,applyonlytovirustoleranthybrids.Donotuseonsweetcorn.DonottankmixACCENT,ACCENTQ,orNIC‐ITwithfoliar‐appliedorganophosphateinsecticidesasseverecropinjurymayoccur.CertaincornhybridsaresensitivetoALS‐inhibitorherbicides(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastinterval=4hours.
Acuron3.44SC(s‐metolachlor+atrazine+mesotrione+bicyclopyrone)
1.25‐2.5qt 0.67‐1.34lb
+0.313‐0.625lb
+0.075‐0.15lb
+0.019‐0.038lb
1552727
60days 24hours
Comments:ACURONisaRESTRICTEDUSEPESTICIDE.ApplyACURONfromemergenceupto12inchesinheightbeforebroadleafweedsaregreaterthan3inchesinheight.DonotapplyACURONinliquidfertilizerorseverecropinjurymayoccur.ACURONappliedalonewillnotprovideconsistentpostemergencecontrolofemergedgrassweeds.Donotapplymorethan2.5qt/AofACURONpergrowingseason.TankmixpartnersincludeATRAZINE,ACCENTQ,STEADFASTQ,GLYPHOSATE,andWARRIOR.Rainfastintervalnotindicatedonlabel(suggest1hourminimum).
Aim2EC(carfentrazone)Aim1.9EW
0.5‐1.0floz
0.008‐0.016lb
14
3days 12hours
Comments:ApplyAIMbroadcasttocornfromemergenceuntil8leafcollargrowthstage(V8).Excellentcontrolofsmallsicklepod,glyphosate‐resistantPalmeramaranth,andmorningglory.AddaCOC(1‐2gal/100gals),NIS(1qt/100gals),orMSO(1‐2gal/100gals).MaybetankmixedwithGLYPHOSATEforbroaderspectrumweedcontrolinRoundupReadycorn.**ConsultAIMproductlabelregardingspecificrecommendationsforpreharvestintervals.Rainfastinterval=6hours
South Carolina Pest Management Handbook for Field Crops - 2017
42
PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryIntervalFormulation ActiveIngredient
Armezon2.8SC(topramezone)+atrazine4SC
0.75‐1.0floz+
1.0‐2.0pt
0.016‐0.022lb
+0.5‐1.0lb
285
45days 12hours
Comments:ApplyARMEZONovertopcornfromemergenceupto12inchestall.Forbestresults,addMSOoraCOCat1.0‐1.5galper100galofspraymixplusafertilizersolutionofUANat1.25‐2.5galorspraygradeAMSat8.5‐17lbper100gal(usehigheradjuvantratesforperiodswherehotdryweatherisexpected).Donotapplymorethan1.0floz/Aperseason.Goodtoexcellentcontrolofglyphosate‐andALS‐resistantandPalmeramaranth(lessthan6”tall).Rainfastinterval=1hour.
BalanceFlexx2SC(isoxaflutole)+atrazine4SC
6.0floz+
1.0pt
0.094lb
+0.5lb
275
45days 12hours
Comments: BALANCE FLEXX is a RESTRICTEDUSE PESTICIDE. Apply BALANCE FLEXX overtop on corn from spikingthroughthe2leafcollarstage(V2).Controlsglyphosate‐andALS‐resistantPalmeramaranth,sicklepod,andpricklysida.Add0.5lb/AATRAZINEtoenhancecontrolofweedslargerthan6inches(restrictsbroadcastapplicationtocorn12inchestallorless).DonotuseCOCorMSOwithBALANCEFLEXXappliedtoemergedcorn.Donotapplytank‐mixesofBALANCEFLEXXwithorganophosphateorcarbamateinsecticidestoemergedcorn. Foliarapplicationsoforganophosphoteorcarbamateinsecticidesshouldnotbemadewithin7daysofanapplicationofBALANCEFLEXX.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseBALANCEFLEXXonsoilswherethesubsoilisloamysandorsand(i.e.,noclaysubsoil).Rainfastinterval=N/A(suggest1hour).
Banvel/Clarity4S(dicamba)
0.5‐1.0pt 0.25‐0.5lb
4
** 24hours
Comments:ApplyBANVELorCLARITYatthe1.0ptrateovertopcornfromthespikestageupto8inchtallcornor5leafcollarstage(V5)toprovideearlycontrolofvinesandbroadleafweeds.Applythe0.5pt/Aratefromthe8inchtallupto36inchtallcornor15daysbeforetasselemergence,whichevercomesfirst.Forbestperformance,applywhenweedsarelessthan3inchestall.Usedirectedapplicationswhencornleavespreventproperspraycoverage,sensitivecropsaregrowingnearby,ortankmixingwith2,4‐D.DonotapplyBANVELorCLARITYunderconditionswhichfavordriftontonearbycrops.**CorntreatedwithBANVELorCLARITYmaybeharvestedorusedforfeedoncethecrophasreachedthemilkstageofdevelopment.Rainfastintervalnotindicatedonlabel(suggest1hourminimum).
Basagran4S(bentazon)
1.5‐2.0pt 0.75‐1.0lb
6
12days 48hours
Comments:Treatwhenbroadleafweedsaresmallandactivelygrowing.Donotapplytoweedsthatareunderstresssuchasmoistureorherbicideinjury,asunsatisfactorycontrolmayresult.Adjustrateaccordingtoweedsizeasindicatedontheproductlabel.AddCOCtothespraytankatrateof1qt/A.Donotapplymorethan4ptperacreofBASAGRANperseason.Rainfastinterval=4hours.
Beacon75DF(primisulfuron)
0.76oz 0.036lb
2
60days 12hours
Comments:ApplyBEACONovertop,directedorsemi‐directedtocontrolrhizomejohnsongrass8to16inchestall.BEACONmaybeappliedbroadcastovertop cornup to20 inches tall. Directedor semi‐directedapplicationsmay improveweedcoverageandminimizecropinjury.AddNISat1.0qt/100galofspraymix,orCOCat1.0to4.0pt/A.DonotapplyBEACONtocornpreviouslytreatedwithCOUNTER15G,orCOUNTER20CR(in‐furrow)unlesshybrid isIR(imidazolinoneresistant).InjurymayoccurwhereBEACONisappliedtocornpreviouslytreatedwithsoil‐appliedLORSBANorCOUNTER20CRT‐banded.Certaincornhybridsaresensitive toALS‐inhibitorherbicides(MOA=2),consultyour localseeddealer formoreinformation.Rainfastinterval=4hours.
South Carolina Pest Management Handbook for Field Crops - 2017
43
PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
Buctril4EC(bromoxynil)+atrazine4SC
0.5‐0.75pt+
1.0‐2.0qt
0.25‐0.38lb
+1.0‐2.0lb
65
45days 24hours
Comments:ApplyBUCTRILovertop corn from4 leafgrowthstage (V4)up tobefore tassel emergence to controlglyphosate‐andALS‐resistantandPalmeramaranth(lessthan2inchesinheight).Applywhenweedsareinthe2‐to4‐leafstageorlessthan6inchestall.Lessdangerofvolatilitydriftthan2,4‐DorBANVEL.TankmixtureswithBANVEL,2,4‐D, or CLARITYmay cause stalk brittleness. Tankmixes with liquid fertilizers may cause excessive leaf burn.Rainfastintervalnotindicatedonlabel(suggest1hourminimum).
Cadet0.91EC(fluthiacetmethyl) 0.9oz 0.006lb 14 60days 12hours
Comments: ApplyCADETbroadcast to corn from2 leaf growth stage (V2) up to 48 inches in height, butbeforetasseling.Excellentcontrolofsmallsicklepod,glyphosate‐resistantPalmeramaranth,andmorningglory.AddeitheraCOC(1‐2pt/A)orNIS(1qt/100gals)plusUANat1‐2qt/AorspraygradeAMSat8.5lb/100gals.MaybetankmixedwithglyphosateforbroaderspectrumweedcontrolinRoundupReadycorn.Donotapplymorethan1.25oz/ACADETperseason.Rainfastinterval=4hours.
Callisto4SC(mesotrione)+atrazine4SC
3.0floz+
1.0qt
0.094lb
+1.0lb
275
45days 12hours
Comments:ApplyCALLISTO+ATRAZINEovertopcornupto12inchestall.[Note:withoutATRAZINE,CALLISTOmaybeappliedtocornupto30 inches tallor8 leafgrowthstage(V8)].Providesgoodcontrolofglyphosate‐andALS‐resistantandPalmeramaranth.ApplybeforePalmeramaranthreaches5inches.AlwaysaddCOCat1gal/100galofspraymixandUANatarateof2.5%v/vorAMSatarateof8.5lbs/100gal.DonotuseMSOadjuvantswithCALLISTOasseverecropinjurymayoccur.Donotapplymorethan7.7floz/AofCALLISTOperseason.Donotmakemorethan2applicationsofCALLISTOperseason.Delaysecondapplicationuntil14daysafterthefirst.Rainfastinterval=12hours.
Capreno3.45SC(thiencarbazone+tembotrione)+atrazine4SC
3.0floz+
1.0qt
0.013lb
+0.068lb
+
1.0lb
2275
45days 12hours
Comments:ApplyCAPRENOovertoponcornfromthe1leafcollarstage(V1)uptothe6leafcollarstage(V6).Controlsglyphosate‐andALS‐resistantPalmeramaranth,sicklepod,andpricklysida.Add0.5lb/AATRAZINEtoenhancecontrolofweedslargerthan6inches(restrictsbroadcastapplicationtocorn12inchestallorless).AddCOCat1gal/100galofspraymixplus1.5qt/AofUANor1.5lb/AofspraygradeAMS.TheuseofNISwilldecreaseweedcontrolperformance.Asequentialapplicationof3.0flozcanbemade(waitaminimumof14days).Donotexceed6.0floz/Ainagrowingseason.DonotuseCAPRENOinthesameseasonasLORSBAN,COUNTER,DYFONATE,orTHIMET.Foliarapplicationsoforganophosphoteorcarbamateinsecticidesshouldnotbemadewithin7daysofanapplicationofCAPRENO.CertaincornhybridsaresensitivetoALS‐inhibitorherbicide(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastinterval=1hour.
South Carolina Pest Management Handbook for Field Crops - 2017
44
PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
Corvus2.63SC(thiencarbazone+isoxaflutole)+atrazine)
3.33floz+
1.0qt
0.020lb
+0.049lb
+1.0lb
2275
45days 12hours
Comments:CORVUSisaRESTRICTEDUSEPESTICIDE.ApplyCORVUSovertoponcornfromspikingthroughthe2leafcollarstage(V2).Controlsglyphosate‐andALS‐resistantPalmeramaranth,sicklepod,andpricklysida.Add1.0lb/AATRAZINEtoenhancecontrolofweedslargerthan6inches.DonotuseCOCorMSOwithCORVUSappliedtoemergedcorn.Donotapplytank‐mixesofCORVUSwithorganophosphateorcarbamateinsecticidestoemergedcorn.DonotapplysoloHPPDinhibitorpostemergenceherbicides(i.e.,LAUDIS,CALLISTO,IMPACT)tocornthathasbeentreatedwithCORVUSherbicideinthesamegrowingseason.DonotapplymorethanoneapplicationofCORVUSper365dayperiod.Foliarapplicationsoforganophosphoteorcarbamateinsecticidesshouldnotbemadewithin7daysofanapplicationofCORVUS.Ifthewatertable(levelofsaturation)islessthan25feetbelowthegroundsurface,donotuseCORVUSonsoilswherethesubsoil is loamysandorsand(i.e.,noclaysubsoil).Certaincornhybridsaresensitive to ALS‐inhibitor herbicides (MOA=2), consult your local seed dealer for more information. Rainfastintervalnotindicatedonlabel(suggest1hourminimum).
Distinct70DG
(dicamba+diflufenzopyr)
4.0‐6.0oz
0.138‐0.207lb+
0.054‐0.80lb
419
** 12hours
Comments:Applyovertoptocornbetween4and24inchestall.Forcorn4to10inchestall,use6oz/A.Forcorn10to24inchestall,use4oz/A.Usedropnozzlesatthe4oz/Arateasarescuetreatmentforcorn24to36inchestall.AlwaysaddNISat1qtper100galofspraymix.DonotuseCOC.DISTINCTprovidesexcellentcontrolofseveralbroadleafweeds,includingglyphosate‐andALS‐resistantPalmeramaranth.Donotapplyunderweatherconditionsthatfavordriftontonearby,sensitivecrops.Donottank‐mixwithgrowthregulatorherbicides,suchasBANVELor2,4‐D.**Donotharvestforcorngrainandstoverwithin72daysofDISTINCTapplicationordonotharvestcornforfodderwithin32daysofDISTINCTapplication.Rainfastinterval=4hours.
Expert4.88L(glyphosate+s‐metolachlor+atrazine)
2.5‐3.75qt 0.47‐0.71lbae
+1.09‐1.63lb
+1.33‐2.0lb
9155
60days 24hours
Comments:USEONLYONGLYPHOSATE‐TOLERANT(ROUNDUPREADY,ROUNDUPREADY2,AGRISUREGT)CORNHYBRIDS!EXPERTisaRESTRICTEDUSEPESTICIDE.ApplyEXPERTfromemergenceuptill12inchestallcorn.EXPERTprovidesexcellentcontrolofseveralbroadleafandgrassweedswhileprovidingresidualcontrolofweedsthathavenotemerged.Rainfastinterval=2hours.
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
FulTimeNXT4.04SC(acetochlor+atrazine)
2.0‐3.7qt 1.35‐2.50lb
0.67‐1.24lb
155
60days 12hours
Comments:FULTIMENXTisaRESTRICTEDUSEPESTICIDE.ApplyFULTIMENXTbeforecornexceeds11inchesinheight.Applicationrateisbasedonorganicmattercontentofthesoil:Forsoilswithlessthan1.5%organicmatter,applicationraterangeis2.0‐2.9qt/A.Forsoilswith1.5%organicmatterormore,theapplicationraterangeis2.3‐3.7 qt/A. FULTIME NXT may be applied before, with, or following postemergence herbicides in corn: AIM,ATRAZINE,BALANCEFLEXBANVEL,CALLISTO,CAPRENO,CLARITY,DISTINCT,DURANGODMA,HORNETWDG,IMPACT,LAUDIS,LIBERTY,LINEX4L,LOROXDF,MARKSMAN,RESOURCE,STATUS,or2,4‐D.DonotapplyFULTIMENXTtothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.Donotapplymorethan3lbaiACETOCHLORperacreperyear.
Glyphosate(various)acidequivalent(ae)
3lbae/gal4lbae/gal4.17lbae/gal4.5lbae/gal
32oz24oz23oz22oz
0.75lbae
9 50days 4hours
Comments:USEONLYONGLYPHOSATE‐TOLERANT(ROUNDUPREADY,ROUNDUPREADY2,AGRISUREGT)CORNHYBRIDS!ApplyGLYPHOSATEbroadcastincornuptotheV8growthstage(about30”tall)beforeweedsexceed4inchesinheight.Usedropnozzlesfor30‐48”tallcorntoavoidsprayingintothewhirlsoftheplants.Allowaminimumof10daysbetweenapplications.MaybetankmixedwithATRAZINE(applicationrestrictedto12"tallcorn)forresidualcontrol.Asinglein‐cropapplicationmustnotexceed1.12lbae/A.Asequentialapplicationmustnotexceed1.12lbae/A(2.24lbae/Atotalforin‐cropapplicationsthrough48inchcorn).Rainfastinterval=heavyrainfallsoonafterapplicationmaywashproductoffofthefoliageandarepeatapplicationmaybeneededtoensureadequateweedcontrol(suggest1hour).
HalexGT4.39SC(s‐metolachlor+glyphosate+mesotrione)
3.6‐4.0pt 0.94‐1.05lb
+0.94‐1.05lb
+0.094‐0.105lb
15927
45days 24hours
Comments:USEONLYONGLYPHOSATE‐TOLERANT(ROUNDUPREADY,ROUNDUPREADY2,AGRISUREGT)CORNHYBRIDS!ApplyHALEXGTovertopcornfromemergenceupto30inchesinheightorthe8‐leafstageofcorngrowth.HALEXGTmustbeappliedwithaNISat1‐2qt/100galofspraymix.UsethehigherrateofNISwhenweedsaregrowingunderstressconditions.InadditiontoNIS,addspraygradeAMSat8.5‐17lb/100galofspraymix.TheuseofUANinsteadofAMSinnotrecommendedduetoriskofcropinjury.IftankmixingHALEXGTwithatrazine,donotapplywhencornexceed12inchesinheight.Temporarycropsresponse(transientbleaching)mayoccurunderextremeweatherconditionsorwhen thecrop issuffering fromstress. Rainfast interval=heavyrainfallsoonafterapplicationmaywashproductoffofthefoliageandarepeatapplicationmaybeneededtoensureadequateweedcontrol(suggest1hour).
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
Hornet68.5WDG(flumetsulam+clopyralid)Stanza68.5WDF
2.0‐5.0oz 0.023‐0.057lb
+0.063‐0.156lb
24
85days 48hours
Comments:ApplyHORNETorSTANZA fromemergence (spikestage)until cornreaches20 inches inheight (or theV6growthstage).IncludeaNISat1qt/100galorCOC/MSOat1gal/100galofsprayvolume.PostemergenceapplicationsofHORNETor STANZA to cornpreviously treatedwithT‐band,band,or in‐furrowapplicationsofotherorganophosphateinsecticides, such as LORSBAN, AZTEC, FORTRESS, or DYFONATE, may cause temporary crop injury. Do not tankmixHORNET or STANZA with foliar postemergence organophosphate insecticides as severe crop injury may result. Foliarorganophosphateinsecticideshouldbeappliedasleast10daysbeforeoraftertheapplicationofHORNETorSTANZA.DonotapplyHORNETorSTANZAifCOUNTER(terbufos)orTHIMET(phorate)insecticideswereappliedatplanting.HORNETorSTANZAmaybetankmixedwithotherfoliarnon‐organophosphateinsecticides.Donotplantcottonwithin18monthsofapplication.Rainfastinterval=2hours.
Impact2.8SC(topramezone)+atrazine4SC
0.75floz
+1.0‐2.0pt
0.016lb
+0.5‐1.0lb
285
45days 12hours
Comments:ApplyIMPACTovertopcornfromemergenceupto12inchestall.Forbestresults,addMSOat1.0‐1.5galper100galofspraymixcombinedwithafertilizersolutionofUANat1.25‐2.5galper100galofspraymixorspraygradeAMSat8.5‐17lbper100gal(usehigheradjuvantratesforperiodswherehotdryweatherisexpected).Donotapplymorethan0.75floz/Aperseason.Goodtoexcellentcontrolofglyphosate‐andALS‐resistantandPalmeramaranth(lessthan6”tall).Rainfastinterval=1hour.
KeystoneNXT5.6SC(acetochlor+atrazine)
1.4‐3.0qt 1.09‐2.33lb
+0.88‐1.88lb
155
60days 12hours
Comments:KEYSTONENXTisaRESTRICTEDUSEPESTICIDE.ApplyKEYSTONENXTafteremergenceupto11inchesinheight.Donotapplymorethan3.8qtperofKEYSTONENXTperseason.PostemergenceKEYSTONENXTtankmixpartnersmay include ACCENT, AIM, ATRAZINE, BALANCE FLEXX, BANVEL, BASIS, BASIS GOLD, BEACON, BUCTRIL, CALLISTO,CALLISTOXTRA,CAPRENO,CLARITY,DISTINCT,HORNETWDG,IMPACT,LAUDIS,LIBERTY,LIGHTNING,LINEX4L,LOROXDF,MARKSMAN,PEAK,PERMIT,PROWL,PENDIMAX,PURSUIT,RESOURCE,SHOTGUN,SPIRIT,STATUS,STEADFAST,or2,4‐D.
Laudis3.5SC(tembotrione)+atrazine4SC
3.0floz+
1.0pt
0.082lb
+0.5lb
275
45days 12hours
Comments:ApplyLAUDISovertoponcornfromemergenceuptothe8leafcollarstage(V8).Controlsglyphosate‐andALS‐resistantPalmeramaranth.Add0.5lb/AATRAZINEtoenhancecontrolofweedslargerthan6inches(restrictsapplicationtocorn12”tallorless).AddMSOat1galper100galofspraymixplus1.5qt/AofUANor1.5lb/AofspraygradeAMS.DonotusenitrogenfertilizersolutionastheprimarycarrierforapplyingLAUDIS.DonotuseNISasweedcontrolperformancewillbeerratic.Asecondsequential3floz/Aapplicationcanbemade(waitaminimumof7days).Donotexceed6oz/Apergrowingseason.Rainfastinterval=1hour.
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
Liberty2802.34SL(glufosinate)Interline2.34SL
22‐29floz 0.40‐0.53lb
10
** 12hours
Comments: USE ONLY ON CORNHYBRIDS CONTAINING THE LIBERTY‐LINK TECHNOLOGY! Apply LIBERTYovertoponcornfromemergenceuptothe24‐inch‐tallcorn(V7).Forcorn24to36inchestall,usedropnozzles.Avoidsprayingintothewhorlorleafaxilsofthecornstalks.Controlsglyphosate‐andALS‐resistantPalmeramaranth(lessthan4”).Usethe29oz/ArateofLIBERTYwhentargetingPalmeramaranth.AlwaysaddAMSat3lb/AwhenapplyingLIBERTY.DonotaddNISorCOCasitmayincreasecropresponse.Donotexceed44ozLIBERTYperacreperseason.Donotusenitrogensolutionsasspraycarriers.**DoapplyLIBERTYwithin60daysofharvestingcornforageandwithin70daysofharvestingcorngrainandcornfodder.Rainfastinterval=4hours.
Marksman3.2S
(dicamba+atrazine)
2.0‐3.5pt
0.28‐0.48lb+
0.53‐0.92lb
45
60days 24hours
Comments:MARKSMANisaRESTRICTEDUSEPESTICIDE.ApplyMARKSMANovertopcornfromemergencethroughthe 5 leaf growth stage (V5) or 8 inches tall. Controls glyphosate‐ and ALS‐resistant Palmer amaranth. ReduceMARKSMANrateto2.0pt/Aoncoarsetexturedsoils(sand,loamysand,andsandyloam).DonotuseCOCaftercornemergenceascropinjurymayresult.Amaximumof5.25pt/Aperseasonisallowed.ANISmaybeaddedtothespraytank.Rainfastinterval=4hours.
Option35DF(foramsulfuron)
1.5‐1.75oz 0.003‐0.038lb
2
** 12hours
Comments:ApplyOPTIONtocornfromtheV1totheV6growthstage.UsedirectedordropnozzlesforapplicationsattheV7‐V8growthstage.Addmethylatedorethylatedseedoilat1.5pt/Aincombinationwithanitrogenfertilizer(1.5‐2qt/AofUANor1.5‐3lb/AofAMS).DonotuseOPTIONinthesameseasonasCOUNTER15G(alluses),COUNTER20CR(in‐furrow),DYFONATE(alluses)andTHIMET(alluses).FoliarapplicationsofanOP insecticideshouldnotoccurwithin7daysofanOPTIONapplication.Infieldsheavilyinfestedwithjohnsongrass,applyonlytovirustoleranthybrids.**DonotapplyOPTIONwithin70daysofharvestinggrainor45daysofharvestingcornforage.Certaincornhybrids are sensitive to ALS‐inhibitor herbicides (MOA=2), consult your local seed dealer for more information.Rainfastinterval=2hours.
ProwlH2O3.8CS(pendimethalin)
Prowl3.3EC+atrazine4SC
2.0‐3.0pt
1.8‐2.4pt+
1.5‐2.0qt
0.95‐1.43lb
0.75‐1.0lb+
1.5‐2.0lb
3
5
21days
24hours
Comments:ApplyPROWLover‐the‐topaftercornemergenceupto12‐inch‐tall(V4)cornbutwhenseedlinggrassesarelessthan1inchtall.IfATRAZINEisnotused,PROWLcanbeappliedupto30‐inch‐tallcorn.Usethehigherratesonfine‐texturedsoils.Incaseofstandfailure,cornseedshouldbereplantedbelowtheherbicidetreatedzone.Rainfastintervalnotindicatedonlabel(suggest1hour).
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
RealmQ38.75DF(rimsulfuron+mesotrione)
4.0oz 0.019lb
+0.078lb
227
70days 12hours
Comments: ApplyREALMQover‐the‐top to corn fromemergenceup to 20 inches (or 7 ormore collars visible),whicheverismorerestrictive.AddNISat1qtper100galorCOCat1galper100galplusnitrogenfertilizersolutionat2qt/Aorammoniumsulfateat2lb/A.Donotapplymorethan4.0oz/AofREALMQpergrowingseason.Ifactivatingrainfallisnotreceivedwithin7daysofapplication,afollow‐upwithcultivationorasequentialapplicationofACCENTQorGLYPHOSATEmaybeneeded.DonottankmixREALMQwithBASAGRANorseverecropinjurymayoccur.DonotapplyREALMQwithin45daysofcropemergencewhereCOUNTERwasappliedsincecropinjurymayoccur.DonottankmixRESOLVEQwithafoliarappliedorganophosphateinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,asseverecropinjurymayoccur.Toavoidcropinjury,applytheseproductsasleast7daysbeforeor3daysafterapplicationofREALMQ.DonotapplyREALMQaeriallyorapplythroughanytypeofirrigationsystem.Donotapplytofieldcorngrownforseed.Rainfastinterval=4hours.
Resicore3.29SC(acetochlor+mesotrione+clopyralid)
2.25‐2.5qt
1.58‐1.75lb
+0.17‐0.19lb
+0.11‐0.12lb
15274
45days 12hours
Comments: ApplyRESICOREaftercornemergenceupto11 inches inheight.RESICOREmaybe tankmixedwithATRAZINEforenhancedbroadleafandgrassweedcontrol.Forcontrolofemergedgrasses,tankmixRESICOREwithACCENTQorSTEADFASTQinconventionalcorn.RESICOREmaybetankmixedwithGLYPHOSATEforglyphosate‐tolerantcornorLIBERTYforglufosinate‐tolerantcorn.ApplyRESICOREwhenweedsaresmall(1‐2inchesinheight).Do not apply RESICORE to emerged corn that has received an at‐plant application of PHORATE or TERBUFOSinsecticide or severe crop injury may occur. Postemergence applications of any organophosphate or carbamateinsecticidewithin7daysbeforeor7daysafteraRESICOREapplicationmayresultinseverecorninjury.Donotapplymorethan3.25qtofRESICOREperacreperyear.DonotmakemorethantwoapplicationsofRESICOREperyear.DonotapplyRESICORE(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan2%organicmatter;orsandyloamswithlessthan1%organicmatter.
Resolve25DF(rimsulfuron)
1.0oz 0.016lb
2
30days 4hours
Comments: Apply RESOLVE 25DF overtop to corn from emergence up to 12‐inch corn or 6 leaf collars visible,whicheverismorerestrictive.ProvidessuppressionofPalmeramaranth.AddNISat1.0qtper100galplusnitrogenfertilizerat2.0qt/AorAMSat2lb/A.Ifrainfallisnotreceivedwithin7daysofapplication,afollow‐upcultivationorasequentialapplicationofACCENTmaybeneeded.Donotapplymorethan2.0oz/AofRESOLVE25DFinagrowingseason.DonottankmixRESOLVE25DFwithBASAGRANorseverecropinjurymayoccur.DonottankmixRESOLVE25DFwithafoliarappliedorganophosphateinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,asseverecropinjurymayoccur.CertaincornhybridsaresensitivetoALS‐inhibitorherbicides(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastintervalnotindicatedonlabel(suggest1hour).
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
ResolveQ(mp)22.4DF
(thifensulfuron+rimsulfuron)
1.25oz
0.014lb+
0.003lb
22
30days 4hours
Comments:ApplyRESOLVEQover‐the‐toptocornfromemergenceupto20‐inchcornor5collarsvisible,whicheverismorerestrictive.ProvidessuppressionofPalmeramaranth.AddNISat1qtper100galorCOCat1galper100galorMSOat0.5galper100galplusnitrogenfertilizersolutionat2qt/Aorammoniumsulfateat2lb/A.Ifrainfallisnotreceivedwithin 7 days of application, a follow‐upwith cultivationor a sequential applicationof ACCENTmay beneeded.Donotapplymorethan2.5oz/AofRESOLVEQinagrowingseason.DonotapplyRESOLVEQwithin45daysof crop emergencewhere COUNTERwas applied since crop injurymay occur. Do not tankmix RESOLVEQwithBASAGRANorseverecropinjurymayoccur.DonottankmixRESOLVEQwithfoliarappliedOPinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,asseverecropinjurymayoccur.CertaincornhybridsaresensitivetoALS‐inhibitorherbicides(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastintervalnotindicatedonlabel(suggest1hour).
RevulinQ51.2DF(nicosulfuron +mesotrione)
3.4‐4.0oz
227
70days 12hours
ApplyREVULINQover‐the‐toptocornfromemergenceupto20‐inchcornor6collarsvisible,whichever ismorerestrictive.Forapplicationstocornfrom20to30inchestall,usedropnozzlesonlyandavoidsprayingintothewhorloftheplant.Donotapplytocornafterheightexceeds30inches.Optimumapplicationtimingiswhencornis12inchesorlessandweedsaresmallandactivelygrowing.AddCOCat1galper100galplusnitrogenfertilizersolutionat2qt/Aorammoniumsulfateat2lb/A.DonotusemethylatedseedoiladjuvantsorblendswithREVULINQ.Ifactivatingrainfallisnotreceivedwithin7daysofapplication,afollow‐upwithcultivationorasequentialapplicationofACCENTQorGLYPHOSATEmaybeneeded.Donotapplymorethan4.0oz/AofREVULINQinagrowingseason.DonottankmixREVULINQwithBASAGRANorseverecropinjurymayoccur.DonotapplyREVULINQwithin45daysofcropemergencewhereCOUNTERwasapplied.DonottankmixREVULINQwithafoliarorganophosateinsecticides,suchas LORSBAN,MALATHION, PARATHION, etc., as severe crop injurymay occur. To avoid crop injury, apply theseproductsasleast7daysbeforeor3daysafterapplicationofREVULINQ.DonotapplyREVULINQaeriallyorapplythroughanytypeofirrigationsystem.Rainfastinterval=4hours.
Sandea75WDG(halosulfuron)
0.67‐1.33oz 0.031‐0.062lb
2
30days 12hours
Comments: ApplySANDEAover‐the‐top tocorn fromemergence through the laybystage.Usedropnozzlesaftercanopypreventsadequatecoverageofweeds.Controlsyellowandpurplenutsedge.AddNISat1qtper100galsspraysolution.TankmixpartnersincludeBANVEL,2,4‐D,BUCTRIL,andATRAZINE.Pleaseobserveandfollowthemorerestrictiveapplicationtimingsonthetankmixpartnerlabels.Donotexceed2.67ozperacreperseason.Certaincornhybrids are sensitive to ALS‐inhibitor herbicides (MOA=2), consult your local seed dealer for more information.Rainfastinterval=4hours.
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
Sequence5.25S
(glyphosate+s‐metolachlor)
2.0‐2.5pt
0.56‐0.71lbae+
0.56‐0.70lb
915
50days 24hours
Comments:USEONLYONGLYPHOSATE‐TOLERANT (ROUNDUPREADY,ROUNDUPREADY2,AGRISUREGT)CORNHYBRIDS!ApplySEQUENCEfromemergenceuptillcornplantsreach30inchestall.Applicationsfrom30to48inchesrequiredropnozzlestoensureSEQUENCEdoesnotcontactthewhorloftheplant.Donotexceed3.5pt/Ainasingleapplicationor5.0pt/Atotalperyear.CanbetankmixedwithATRAZINEforimprovedresidualbroadleafweedcontrol(consult label foradditionaltankmixchoices).Rainfastinterval=heavyrainfallsoonafterapplicationmaywashproductoffofthefoliageandarepeatapplicationmaybeneededtoensureadequateweedcontrol(suggest1hour).
Status56WDG
(dicamba+diflufenzopyr+isoxadifen)
5‐10oz
0.223‐0.446lb+
0.089‐0.178lb+
safener
419
** 24hours
Comments:ApplySTATUSover‐the‐toponcornfromV2(4inchestall)toV10(36inchestall)growthstages.Controlsglyphosate‐andALS‐resistantPalmeramaranth.AddNISat1qtorCOCat1.0‐2.0pt/AorMSOat1.0‐2.0pt/Aper100galplusnitrogenfertilizerat5.0qtper100galorAMSat8.5lb/A.Donotapplyunderweatherconditionsthatfavordriftontonearby,sensitivecrops.Donotapplymorethan12.5oz/AofSTATUSperseason.DonotapplySTATUSusinganitrogenfertilizersolutionasacarrier.Donotapplyifcornismorethan36inchestall(V10stage)or15daysbeforetassel emergence, whichever comes first. **Do not harvest for corn grain and stover within 72 days of STATUSapplicationordonotharvestcornforfodderwithin32daysofSTATUSapplication.Rainfastinterval=4hours.
Steadfast75DF(nicosulfuron+rimsulfuron)
0.75oz
0.023lb+
0.012lb
22
30days 4hours
Comments:ApplySTEADFASTover‐the‐topcornupto20”tallor6collars(V6),whicheverismorerestricitve.AddCOCat1galper100gallonsorNISat1qtper100gallons.Addnitrogenfertilizersolutionat2qt/AorAMSat4lb/A.DonotapplytocornpreviouslytreatedwithCOUNTER15G,orCOUNTER20CR(in‐furrow).InjurymayoccurwhenSTEADFASTisappliedtocornpreviouslytreatedwithsoilappliedLORSBAN,THIMET,orCOUNTER20CRT‐banded.Do not tankmix STEADFAST orwithBASAGRANor LADDOCKor severe crop injurymayoccur.Do not tankmixSTEADFASTwithafoliarappliedorganophosphateinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,asseverecropinjurymayoccur.CertaincornhybridsaresensitivetoALS‐inhibitorherbicides(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastinterval=4hours.
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
SteadfastQ37.7WDG(nicosulfuron+rimsulfuron)
1.5oz
0.023lb+
0.012lb
22
30days 4hours
Comments:ApplySTEADFASTQover‐the‐topcornupto20”tallor6collars(V6),whicheverismorerestrictive.AddCOCat1galper100gallonsorMSOat0.5galper100gallonsorNISat1qtper100gallonsplusanitrogenfertilizersolutionat2qt/A(28to32%N)orspraygradeAMSat4lb/A.DonotapplytocornpreviouslytreatedwithCOUNTER15G,orCOUNTER20CR(in‐furrow).InjurymayoccurwhenSTEADFASTQisappliedtocornpreviouslytreatedwithsoilappliedLORSBAN,THIMET,orCOUNTER20CR.DonottankmixSTEADFASTQwithBASAGRANorLADDOCKorseverecropinjurymayoccur.DonottankmixSTEADFASTorSTEADFASTQwithafoliarappliedorganophosphateinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,asseverecropinjurymayoccur.Donottankmixwith2,4‐Dorseveregrasscontrolantagonismmayoccur.CertaincornhybridsaresensitivetoALS‐inhibitorherbicides(MOA=2),consultyourlocalseeddealerformoreinformation.Rainfastinterval=4hours.
SteadfastATZ89.3WDG
(nicosulfuron+rimsulfuron+atrazine)
14oz
0.024lb+
0.011lb+
0.75lb
225
60days 12hours
Comments:ApplySTEADFASTATZover‐the‐topcornfromemergenceupto12 inches tallorupandexhibiting6collars(V6).AddNISat1qtper100galorCOCat1galper100galofspraymixplus2qt/AofUANor2lb/AofAMS.DonotapplySTEADFASTATZtocornpreviouslytreatedwithasoilinsecticidesuchasCOUNTER15G,COUNTER20CR(in‐furrow),THIMET,LORSBAN,orCOUNTER20CR(T‐banded).Donot tankmixSTEADFASTATZwithany2,4‐Dcontainingproductsasseveregrasscontrolantagonismmayoccur.DonottankmixSTEADFASTATZwithBASAGRANorLADDOCKorseverecropinjurymayoccur.DonottankmixSTEADFASTATZwithafoliarappliedorganophosphateinsecticides,suchasLORSBAN,MALATHION,PARATHION,etc.,orseverecropinjurymayoccur.Certaincornhybridsare sensitive toALS‐inhibitor herbicides (MOA=2), consult your local seed dealer formore information.Rainfastinterval=4hours.
Stinger3.0SL(clopyralid)
0.33‐0.67pt 0.124‐0.25lb
4
‐‐‐ 12hours
Comments:ApplySTINGERover‐the‐topcornfromemergenceupto24inchestalltocontrolsmallbroadleafweedspecies.Usehigherrateforlargerweeds.Applywithgroundequipmentasabroadcastsprayin10gallonsofwaterormoretoensureuniformandthroughspraycoverageoftheweedfoliage.STINGERmaybetankmixedwithHORNETWDG.Seelabelforadditionalinformation.CorninbredlinesorbreedingstockmaybeinjuredbySTINGER.Donotapplymorethan0.67ptSTINGERperacreperyear.Donotallowlivestocktograzetreatedareasorharvesttreatedcornsilageasfeedwithin40daysafterlasttreatment.Rainfastinterval=6hours.
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PostemergenceHerbicidesforWeedManagementinFieldCorn(cont)
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
SureStartII4.25(acetochlor+flumetsulam+clopyralid)
1.5‐3.0pt 0.703‐1.406lb
+0.023‐0.046lb
+0.071‐0.142lb
1524
85days 12hours
Comments:ApplySURESTARTIIfromplantinguntilcornreaches11inchesinheight.DonotapplySURESTARTIIpostemergence ifcornwaspreviously treatedwithCOUNTER(TERBUFOS)orTHIMET(PHORATE)asseverecropinjurymayresult.PostemergenceapplicationsofSURESTARTIItocornpreviouslytreatedwithT‐band,band,orin‐furrowapplicationsofotherorganophosphateinsecticides,suchasLORSBAN,AZTEC,orFORTRESSinsecticidemaycausetemporarycropinjury.DonottankmixSURESTARTIIwithfoliarpostemergenceorganophospateinsecticidesasseverecropmayresult.Toavoidcropinjury,applythefoliarorganophosateinsecticideatleast10daysbeforeor10daysaftertheapplicationofSURESTARTII.DonotapplySURESTARTIItosweetcornorpopcorn.Donotplantcottonwithin18monthsofapplication.DonotapplySURESTARTII(acetochlor)tothefollowingsoilswithin50ftofanywellwheredepthtogroundwateris30feetorless:sandswithlessthan3%organicmatter;loamysandswithlessthan 2% organic matter; or sandy loams with less than 1% organic matter. Do not apply more than 3 pt/A ofSURESTARTIIinasingleapplication.
Warrant3.0ME(acetochlor)
1.5‐3.0qt 1.13‐2.25lb
15
40days 12hours
Comments:ApplyWARRANTover‐the‐toptocornfromseedlingemergenceuntilcornreaches30inchesinheight.Dropnozzlesarerecommendedforoptimumspraycoverageandweedcontrolwhencornheightis24to30inches.WeedsemergedattimeofapplicationwillnotbecontrolledbyWARRANT.Ifweedsareemergedattimeofapplication,tankmixalabeledpostemergencecornherbicidewithWARRANT.Donotmakeapostemergencesurfaceapplicationusingasprayablefluidfertilizerasthecarrierbecauseseverecropinjurymayoccur.Donotexceed4qtperacreperseasonwhenmakingasecondapplicationofWARRANT.DonotuseWARRANTonsweetcorn.Tankmixpartnersinclude2,4‐D,ATRAZINE,AIM,AXIOM,BALANCE,DICAMBA,DISTINCT,PYTHON,RESOURCE,GLYPHOSATE,LOROX,CALLISTO,MARKSMAN,PROWL,andRESOLVE.
2,4‐D4S(various)
0.5‐1.0pt 0.25‐0.5lb
4
7days 48hours
Comments:Apply2,4‐Dover‐the‐toptocornunder8"tall(totopofcanopy).Ifcornismorethan8inchestall,usedropnozzlestokeepsprayoutofthewhorls.DotankmixwithATRAZINE,oil,orotheradjuvants.Donotapplyfromtasselingtoharddoughstage.Corntreatedwith2,4‐Dmaybecometemporarilybrittle.Windorcultivationmaycausestembreakageduringthattimeperiod.Makenomorethanoneapplicationpercropcycle.Donotapplymorethan1.0pt/Aperapplication.Controlsglyphosate‐andALS‐resistantPalmeramaranth.Donotapplyunderconditionswhichfavordriftontonearby,sensitivecrops.Rainfastintervalnotindicatedonlabel(suggest1hour).
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PostemergenceDirectedHerbicidesforWeedManagementinFieldCorn
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
2,4‐D4Samineorlowvolatileester
0.5‐1.0pt 0.125‐0.25lb
4
7days 48hours
Comments:Apply2,4‐Dasapostemergencedirectedsprayfrom8inchestalluptotasselingusingdropnozzlestominimizecontactwithcornplant.Ifcornplantsaregrowingrapidly,reduce2,4‐Drateto0.5pttominimizecropinjurypotential.
Aim2EC(carfentrazone)
Aim1.9EW
0.5‐2.0floz
0.008‐0.031lb
14
** 12hours
Comments:ApplyAIMasapostemergencedirectedsprayfromV8toV14growthstage.AddaCOCat1‐2galper100gals,NISat1qtper100gals,orMSOat1‐2galper100galsofspraymixture.Avoiddirectingthesprayinthewhorloftheplant.**ConsultAIMproductlabelregardingspecificrecommendationsforpreharvestintervals.
Evik80WDG(ametryn)
0.75‐2.0lb 0.6‐1.6lb
5
30days 12hours
Comments:ApplyEVIKasapostemergencedirectedsprayafterthesmallestcornisatleast12inchestall(measuredfromthehighestleafsurfaceonfree‐standingplants).Applyinaminimumof20gallonsofwaterperacre.Coverageisimportantforweedcontrolperformance.AddNISatarateof2qtper100galsofspraymixture.Donotsprayovertopofcornorinjurywilloccur.Donotmakemorethanoneapplicationperyear.Donotapplywithin3weeksoftasseling.
GramoxoneSL2E(paraquat)Parazone3SFirestorm3S
1.0‐2.0pt
0.7‐1.3pt
0.25‐0.5lb
0.26‐0.49lb
22
7days 12hours
Comments:ApplyPARAQUATasapostemergencedirectedspraywhencornisatleast10inchestall.Ahoodedorshieldedsprayerisrecommendedtominimizespraycontactwithcornfoliage.Applyinaminimumof10gallonsofwaterperacre.Coverageisimportantforweedcontrolperformance.Weeds6inchesortallermaynotbecontrolled.AddNISatarateof1qtper100galsofspraymixture.Ifusingdropnozzles,arrangenozzlestospraynohigherthanlower3inchesofthecornstalks.Cornplantsshorterthan10inchesmaybeinjuredandnotrecover.Forcorngreaterthan20inchesinheight,arrangenozzlestospraynohigherthanthelower1/3ofthecornstalks.Cornfoliagesprayedwillbeinjuredbutcropwillrecoveranddevelopnormally.Donotapplymorethan3applicationsofPARAQUATpost‐directedperyear.
Linex4L(linuron)
Lorox50DF
1.25‐3.0pt
1.25‐3.0lb
0.63‐1.5lb
0.63‐1.5lb
7
57days 24hours
Comments:ApplyLINEXorLOROXasapostemergencedirectedspraywhencornisatleast15inchestall.Applywhenthereissufficientheightdifferentialbetweenweedsandthecropsothatthedirectedspraythoroughlycoversallweedfoliagewithoutcontactofupperleavesorwhorlofthecornbysprayordrift.AddNISatarateof2qtper100galsofspraymixture.Spraytocoverweedsnomorethan3to4inchestall.Uselowerratewhenweedsarenotallerthan2inchesandhigherrateforweedsupto4inchestall.Non‐pressurenitrogensolutionmaybesubstitutedforallorpartofthewatercarrier.
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HarvestAidsforFieldCorn
HerbicideRate/AcreBroadcast Modeof
ActionPreharvestInterval
RestrictedEntryInterval
Formulation ActiveIngredient
2,4‐D4Samineorlowvolatileester
1.0‐3.0pt 0.25‐1.5lb 4 7days 48hours
Comments:Apply2,4‐Dbroadcastaftertheharddoughordentgrowthstagetocontrolweedsthat interferewithharvest.Makenomorethanoneapplicationpercropcycle.Donotapplymorethan3pintsperacreperapplication.
Aim2EC(carfentrazone)
Aim1.9EW
1.0‐2.0floz
0.008‐0.031lb
14
7days 12hours
Comments: Apply AIM after physiological maturity (less than 35% moisture and the black layer has formed).Desiccatesannualmorninggloryandotherweedyharvestimpediments.AddaCOCat1‐2gal/100gals,NISat1qt/100gals,orMSOat1‐2gal/100galstothespraymix.Applyinsprayvolumeswithaminimumof10gal/A
Glyphosateacidequivalent(ae)
3lbae/gal4lbae/gal4.17lbae/gal4.5lbae/gal
32oz24oz23oz22oz
0.75lbae
9 7days 12hours
Comments:ApplyGLYPHOSATEafterphysiologicalmaturity(lessthan35%moistureandtheblacklayerhasformed).ConsultGLYPHOSATEproduct label forrecommendationsonadjuvantsandotheradditives.Notrecommendedforcorngrownforseed.
Parazone3S(paraquat)Firestorm3S
0.8‐1.3pt 0.3‐0.49lb
22
7days 12hours
Comments:ApplyPARAQUAT3Sinaminimumof20gallonsofsprayperacrebygroundor5gallonsofsprayperacrebyairaftercornismature.Ablacklayeratthebaseofeachkernelindicatesmaturity.AddaNISat1qt/100galofspraysolution.Usethehigherratetodesiccatematurebroadleafweedsandgrasses.Droughtstressedplantscanbedifficulttokillanddesiccationmaynotbecomplete.Makeonly1preharvestapplicationofPARAQUAT3Speryear.