18
Potassium Silicate
• For control of Powdery Mildew and other fungal diseases • For suppression of mites, whiteflies and other insects
Product Characteris/cs
Mode of Ac/on
Rate Range Use Info
Target Pests & Crops Results
Presenta;on Outline
Potassium Silicate
Product Characteris/cs
• Ac/ve Ingredient: Potassium Silicate 29%
• 8% K20, 21% SiO2
• Completely Soluble (Alkaline pH buffered to near neutral when diluted; aids in increasing pH of acid solu/ons.
• Product stable under all condi/ons of use and storage • Alkaline: pH 11.3 • Created by mixing Quartz sand (SiO2) and Potassium Carbonate (K2CO3) and mel/ng at 1200°C.
• Compa/ble with liquid sulfur products, hor/cultural oils, DMI and Strobilurin fungicides (Ask Sales Rep. regarding specific chemistries)
Product Characteris/cs
Mode of Ac/on
• Amorphous silica deposits in the leaf apoplast
• Prevents penetra/on of fungi, becomes less palatable to insects, silica acts as a desiccant (used commonly in packaging to reduce humidity).
Mode of Ac/on
• Potassium taken up in turf grass; increases plant turgidity.
• Potassium is in equilibrium with Sililcon-‐oxide and is available to plant as it is applied.
Rate Range Use Info
• 0.5 -‐1.0% spray (1300-‐2600ppm)
• Apply no sooner than every 7 days.
• Use non-‐ionic surfactant
• 20-‐250 gallons per acre (use adequate gallonage to ensure good coverage.
• PPE-‐ Coveralls, Chemical-‐resistant gloves made of any waterproof material, shoes and socks, GOGGLES OR FACE SHIELD WHEN HANDLING UNDILUTED CONCENTRATE.
• REI: 4 hours • PHI: 0 days; Do not make post harvest applica/ons
Rate Range Use Info
• Applica/on for NOP, OMRI and WSDA submiged and in process
• No to Low burn poten/al
• Compa/ble with oil and non-‐ionic surfactants
• Compa/ble with exis/ng spray programs
• Rela/vely odorless
• Liquid formula/on rather than dust
• Compa/ble with IPM programs (soh on beneficials)
Target Pests & Crops
• Grape: PM & Mite (TSSM, ERM)
• Strawberry: Mite (TSSM)
– PM, botry/s
• Apple: Mite (ERM, Rust)
• Almond: Mite (TSSM)
• Leguce: Aphid
• Blueberry: Botry/s
• Cherry: PM
• Cucurbits: PM
Grape Powdery Mildew-‐2004 Walnut Grove, CA
Results
0
10
20
30
40
50
60
70
80
SilMATRIX 2qt/100gal +
NoFoam A 8oz
SilMATRIX 2qt/100gal +
NoFoam A 8oz alt Strobilurin
SilMATRIX 2qt/100gal alt Strobilurin
SilMATRIX 3qt/100gal +
NoFoam A 8oz alt Strobilurin
SilMATRIX 2qt/100gal
prebloom; Abound 12.8fl oz/a alt Flint
2oz/a postbloom
Microsulf 5lb/a prebloom;
Abound 12.8fl oz/a alt Flint
2oz/a postbloom
Untreated
% Incidence
% Severity
Grape Two-‐SpoGed Spider Mite-‐2006
Fresno County, CA
Results
0
10
20
30
40
50
60
70
80
90
Biomite 4pt/100gal
Ecotrol 3pt/100gal
SilMATRIX 3qt/100gal
Untreated
% Con
trol of U
ntreated
7 DAT
14 DAT
21 DAT
Strawberry Powdery Mildew-‐2009 Wimauma, FL
Results
* Disease severity index: Modified Horsfall-‐Barrag scale (0-‐6) numerically increasing in severity.
Strawberry Two-‐SpoGed Spider Mite-‐2004 Woodland, CA
Results
0
5
10
15
20
25
30
35
Untreated AgriMek 10 oz/a SilMATRIX 3qt/a (1950ppm)
Average # m
ites/leaf
1 DAT
4 DAT
7 DAT
Apple European Red Mite (ERM)-‐2006 Buena, WA
Results
0 10 20 30 40 50 60 70 80 90
100
SilMATRIX 2qt/100gal (1
applica/on)
SilMATRIX 4qt/100gal (1
applica/on)
SilMATRIX 2qt/100gal (2
applica/ons)
SilMATRIX 4qt/100gal (2
applica/ons)
Ecotrol 2qt/100gal (1 applica/on
untreated
6 DAA1 15DAA1 (7 DAA2) 19 DAA1 (11 DAA2)
% Con
trol of U
ntreated
All treatments included Green Cypress Organic Spreader @ 8fl oz/100gal
Almond Two-‐SpoGed Spider Mite-‐2005 Visalia, CA
Results
0 10 20 30 40 50 60 70 80 90
100
SilMATRIX 2qt/100gal (1
applica/on)
SilMATRIX 4qt/100gal (1
applica/on)
SilMATRIX 2qt/100gal (2
applica/ons)
SilMATRIX 4qt/100gal (2
applica/ons)
Ecotrol 2qt/100gal (1 applica/on
untreated
7 DAA1
14DAA1 (7 DAA2)
21 DAA1 (14 DAA2)
All treatments included Green Cypress Organic Spreader @ 8fl oz/100gal
% Con
trol of U
ntreated
LeGuce-‐Green Peach Aphid Adults-‐2006 Santa Maria, CA
Results
0
2
4
6
8
10
12
Untreated Silmatrix 2qts/100gal
Silmatrix 4qts/100gal
Pyganic 1pt/a
7 DAA1
6 DAA2
8 DAA3
17 DAA3
SilMATRIX treatments included Green Cypress Organic Spreader @ 8fl oz/100gal
Mean # ad
ult a
phids/plan
t
Tomato-‐Powdery Mildew-‐2009 San Joaquin County, CA
Results
ND ND 0.0
5.0
10.0
15.0
20.0
25.0
Untreated Sil-‐MATRIX 0.5%
Sulfur Dust (98%) 40 lb/
acre
Sulfur DF 20 lb/acre
Sil-‐MATRIX 1.0%
Regalia 0.5% + Rally 2.5 oz + Nu-‐Film P 0.02% v/v
Sonata 4 qt/acre
Ave % Foliage Diseased
Average Yield (tons/acre)
CER-‐2009-‐048
ND=No yield data taken on treatment
