Agricultural fluid deposition aid
A deposition aid is provided, comprising a low molecular weight, low viscosity polysiloxane, combined with a crop oil concentrate or esterified seed oil concentrate. Combinations including the modified silicone can improve spreading and/or adhesion to foliage. Adding about 5% to about 20% of the modified silicone can provide more than a proportional increase in spreading and/or adhesion.
1 . An organosilicone-based agricultural composition, comprising a combination of (a) an optional oil component, (b) a surfactant, and (c) a polysiloxane having an average molecular weight of about 4,000 g/mole or lower and a viscosity of about 50 cSt or lower at 25° C.,
wherein the polysiloxane is soluble or dispersible in the oil component, when the optional oil component is present, and has the general formula (I):
M 1 D x D 1 y M 2 (I)
wherein:
M 1 =R 1 R 2 R 3 SiO 1/2
M 2 =R 4 R 5 R 6 SiO 1/2
D=R 7 R 8 SiO 2/2
D 1 =R 9 R 10 SiO 2/2
R 1 through R 8 are methyl,
y=0;
and
subscript x is about 5 to 50.
2 . The agricultural composition of claim 1 , wherein about 5% to 95% of the composition comprises the oil component, about 1% to 50% of the composition comprises the surfactant; and about 1% to 95% of the composition comprises the polysiloxane component.
3 . The agricultural composition of claim 1 , wherein the combination will exhibit at least 50% improved spreading or 50% improved deposition to a leaf surface than the same composition will spread or adhere to the leaf in the absence of the polysiloxane.
4 . The agricultural composition of claim 1 , wherein the oil component is a mineral oil, a paraffinic crop oil, a vegetable oil, or an esterified seed oil and the polysiloxane is a polydimethylsiloxane or an organo-modified polysiloxane.
5 . The agricultural composition of claim 1 , wherein x is about 5 to 25.
6 . The agricultural composition of claim 1 , wherein the polysiloxane has a viscosity of about 20 cSt or lower at 25° C.
7 . The agricultural composition of claim 6 , wherein the polysiloxane has a molecular weight of about 2,000 g/mole or lower.
8 . The agricultural composition of claim 1 , wherein the optional oil component (a) is present.
9 . The agricultural composition of claim 1 , wherein
about 0% to 95% of the composition comprises the oil component (a), about 1% to 50% of the composition comprises the surfactant (b); and about 1% to 95% of the composition comprises the polysiloxane component (c).
10 . The agricultural composition of claim 1 , comprising a C4 to C18 alcohol alkoxylate surfactant.
11 . The agricultural composition of claim 1 , and comprising a solvent selected from d-limonene, triacetin, isopropylmyristate, and esterified seed oil.
12 . The agricultural composition of claim 1 , and comprising an oil carrier selected from the group of petroleum oil, mineral oil, paraffinic mineral oil, vegetable oil, esterified vegetable oil, esterified seed oil.
13 . An agrochemical composition, comprising a bioactive component and the agricultural composition of claim 1 .
14 . A plant having the agrochemical composition of claim 13 applied thereto.
15 . A method of increasing the spreading or adhesion properties of an agricultural composition containing (a) an oil component and (b) a surfactant, comprising adding to the formulation, an amount of the polysiloxane or organo-modified polysiloxane of Formula (I), wherein y=0, x=5 to 50, and R 1 to R 8 are methyl, having a molecular weight below about 4,000 g/mol, effective to cause the combination to exhibit 10% improved adhesion or spreading when compared to the same formulation, but in the absence of the polysiloxane or organomodified polysiloxane.
16 . The method of claim 15 , wherein the polysiloxane or organomodified polysiloxane has a viscosity of not more than about 50 cSt at 25 degrees C.