Methods of and compositions for plant defoliation
AssigneeBayer Crop Science AG
InventorsHengchen Lin, James R. Bloomberg, Brent D. Philbrook
Life of this patent
Estimating the term…
Abstract
A method of defoliating plants includes applying to plants an effective amount of a first active ingredient selected from the group consisting of substituted nitroguanidine and cyanoguanidine compounds of the formula: 1 wherein R1 is NO2 or CN; R2 is CH3, C2 H5, CF3, n-C3 H7, CH2 OCH3 or CH2CH═CH2; X is hydrogen, o-F, m-F, p-F, m-OCH3, m-OH or p-Cl; and the salts, tautomers and optical isomers thereof; an effective amount of a second active ingredient and optionally, an adjuvant.
Claims22
A method of defoliating plants comprising applying to plants an effective amount of a first active ingredient selected from the group consisting of substituted nitroguanidine and cyanoguanidine compounds of the formula (I):
- 12
- wherein R1 is NO2 or CN;
- R2 is CH3, C2 H5, CF3, n-C3 H7, CH2 OCH3 or CH2CH═CH2;
- X is hydrogen, o-F, m-F, p-F, m-OCH3, m-OH or p-Cl;
- and
- the salts, tautomers and optical isomers thereof;
- an effective amount of a second active ingredient selected from the group consisting of thidiazuron, diuron, ethephon, protoporphyrinogen oxidase (PPO) inhibitor herbicides;
- and,
- optionally, an adjuvant;
- wherein the weight ratio of the first active ingredient to the second active ingredient is from about 1:0.05 to about 1:200.
A method of inhibiting leaf regrowth in cotton comprising applying to cotton an effective amount of a guanidine compound having the formula (I):
- 14
- wherein R1 is NO2 or CN;
- R2 is CH3, C2 H5 or CF3;
- and X is hydrogen, o-F, m-F, p-F, m-OCH3, m-OH or p-Cl, and the salts, tautomers and optical isomers thereof.
A method of inhibiting leaf regrowth in cotton comprising applying to cotton an effective amount of a first active ingredient selected from the group consisting of (+) isomers and (−)-isomers of guanidine compounds having the formula:
- 15
- wherein R1 is NO2 or CN;
- R2 is CH3, C2 H5 or CF3;
- and X is hydrogen, o-F, m-F, p-F, m-OCH3, m-OH or p-Cl;
- an effective amount of a second active ingredient selected from the group consisting of thidiazuron, diuron, ethephon, protoporphyrinogen oxidase (PPO) inhibitor herbicides, ammonium sulfate and combinations thereof;
- and, optionally, adjuvant.
A composition comprising a first ingredient selected from the group consisting of substituted nitroguanidine and cyanoguanidine compounds of the formula (1):
- 16
- wherein R1 is NO2 or CN;
- R2 is CH3, C2 H5, CF3, n-C3 H7, CH2 OCH3 or CH2CH═CH2;
- X is hydrogen, o-F, m-F, p-F, m-OCH3, m-OH or p-Cl;
- and
- the salts, tautomers and optical isomers thereof;
- and
- and a second ingredient selected from the group consisting of herbicides, adjuvants, plant growth regulators, desiccant, boll opening compounds, pesticides, fertilizers and defoliants other than guanidine compounds having the formula (I);
- wherein the composition is in the form of a liquid comprising the first ingredient and the second ingredients at amounts sufficient to provide from about 0.03 to about 0.5 lb/acre of first ingredient and from about 0.005 to about 10 lb/acre of second ingredient.
Dependencies are inferred from the claim text.