Methods of controlling or preventing infestation of soybean plants by phytopathogenic microorganisms
The present invention relates to methods for controlling or preventing infestation of soybean by phytopathogenic microorganisms of the family Corynesporascaceae, in particular Corynespora cassiicola , comprising applying to a crop of plants, the locus thereof, or propagation material thereof, a compound according to formula (I), wherein R1, R2, R3, R4, R5, Y, A, B are as defined herein.
1 . A method of controlling or preventing infestation of soybean plants by phytopathogenic microorganisms of the family Corynesporascaceae, comprising:
applying to a soybean seed a seed treatment composition comprising:
a compound of formula (Ic)
wherein
A is 2-trifluoromethyl-pyrid-3-yl; R11 is Cl; and R12 is Cl, and salts or N-oxides thereof;
and
an enantiomer of the compound of formula (Ic);
wherein the ratio of the compound of formula (Ic) to the enantiomer is greater than 4:1 in the seed treatment composition.
2 . The method according to claim 1 , wherein the phytopathogenic microorganism is Corynespora cassiicola.
3 . The method according to claim 1 , further comprising identifying a field under disease pressure from Corynespora cassiicola.
4 . The method according to claim 3 , wherein the soybean seed is susceptible to Corynespora cassiicola.
5 . The method according to claim 1 , further comprising identifying a soybean seed susceptible to attack by Cornespora cassiicola.
6 . The method according to claim 5 , wherein the soybean seed is susceptible to Cornespora cassiicola.
7 . The method according to claim 1 , wherein the seed treatment is applied at a rate of about 400 ml/100 kg seeds.
8 . The method according to claim 7 , wherein the compound of formula (Ic) and the enantiomer of the compound of formula (Ic), considered together, is applied at a rate of 0.075 mg/seed to 0.15 mg/seed.
9 . The method according to claim 1 , wherein the compound of formula (Ic) and the enantiomer of the compound of formula (Ic), considered together, is applied at a rate of 0.075 mg/seed to 0.15 mg/seed.
10 . The method according to claim 1 , wherein the trans stereoisomers of the compound of formula (Ic) are present up to 20% relative to the combined amount w/w of the trans stereoisomers, the compound of formula (Ic), and the enantiomer of the compound of formula (Ic) in the applying.
11 . The method according to claim 2 , wherein the Corynespora cassiicola is resistant to other fungicides.
12 . The method according to claim 2 , wherein the applying of the compound of formula (Ic) and the enantiomer of the compound of formula (Ic), considered together, is at a rate of 1-500 g/ha.
13 . The method according to claim 12 , wherein the applying of the compound of formula (Ic) and the enantiomer of the compound of formula (Ic), considered together, is at a rate of 10-70 g/ha.
14 . The method according to claim 2 , wherein the applying provides a % efficacy of 51.22% based on pest severity of 25.00%.
15 . The method according to claim 2 , wherein the applying provides a % efficacy from 51.22% based on pest severity of 25.00% to a % efficacy of 73.13% based on pest severity of 13.25%.