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ALFLALFA LONGEVITYALFLALFA LONGEVITYAN IPM STRATEGYAN IPM STRATEGY
ALAN GOTLIEBALAN GOTLIEB
University of VermontUniversity of Vermont
The MAJOR ProblemsThe MAJOR Problems
• FusariumFusarium• Clover root curculioClover root curculio• VerticilliumVerticillium• PhytophthoraPhytophthora• AphanomycesAphanomyces• Winter hardinessWinter hardiness• Harvest frequencyHarvest frequency• Potato leaf hopperPotato leaf hopper
SMOOTH FIELDSMOOTH FIELD
NOTE ROUGHNESS HERENOTE ROUGHNESS HERE
THINNING FIELDTHINNING FIELD
ALFALFA ALFALFA CLOVER ROOT CLOVER ROOT
CURCULIO FUSARIUM CURCULIO FUSARIUM COMPLEXCOMPLEX
CLOVER ROOT CURCULIOCLOVER ROOT CURCULIO
SITONA HISPIDULUSSITONA HISPIDULUS
FUSARIUM ROOT ROTFUSARIUM ROOT ROT
The MAJOR ProblemsThe MAJOR Problems
• FusariumFusarium• Clover root curculioClover root curculio• VerticilliumVerticillium• PhytophthoraPhytophthora• AphanomycesAphanomyces• Winter hardinessWinter hardiness• Harvest frequencyHarvest frequency• Potato leaf hopperPotato leaf hopper
Verticillium WiltVerticillium Wilt
PHYTOPHTHORA ROOT ROT PHYTOPHTHORA ROOT ROT
APHANOMYCESAPHANOMYCESROOT ROOT ROTROT
The MAJOR ProblemsThe MAJOR Problems
• FusariumFusarium• Clover root curculioClover root curculio• VerticilliumVerticillium• PhytophthoraPhytophthora• AphanomycesAphanomyces• Winter hardinessWinter hardiness• Harvest frequencyHarvest frequency• Potato leaf hopperPotato leaf hopper
Factors That Increase the Risks of Winter Injury in Alfalfa
• Potato Leafhopper damage
STAND LONGEVITY STAND LONGEVITY VS VS
HARVEST FREQUENCYHARVEST FREQUENCY
CONTROLCONTROL
• ROTATE TWO YEARS MINIMUMROTATE TWO YEARS MINIMUM• USE RESISTANT VAR (Fusarium, USE RESISTANT VAR (Fusarium,
Verticillium, Phytophthora, Verticillium, Phytophthora, Aphanomyces)Aphanomyces)
• USE HARDINESS SUITABLE FOR USE HARDINESS SUITABLE FOR AREA (2 & 3 more northern) AREA (2 & 3 more northern)
• USE 3 CUT HARVEST SYSTEMUSE 3 CUT HARVEST SYSTEM• Use leaf hopper resistant varietiesUse leaf hopper resistant varieties
The MAJOR ProblemsThe MAJOR Problems
• FusariumFusarium
• Clover root curculioClover root curculio
• VerticilliumVerticillium
• PhytophthoraPhytophthora
• AphanomycesAphanomyces
• Winter hardinessWinter hardiness
• Harvest frequencyHarvest frequency