Bispyribac mixtures
The present invention is directed to agricultural mixtures comprising bispyribac and a C16 to C18 fatty acid methyl ester adjuvant system. The present invention is further directed to methods of increasing the activity of bispyribac with the mixtures of the present invention.
1. An agricultural mixture comprising bispyribac, or a salt thereof, and a C16 to C18 fatty acid methyl ester adjuvant system, wherein the C16 to C18 fatty acid methyl ester adjuvant system comprises from about 60 to about 99% w/w of a C16 to C18 fatty acid methyl ester mixture, from about 0.1 to about 5% w/w of a dodecylbenzene sulfonate salt, from about 0.5 to about 4% w/w of at least one dodecylbenzene sulfonate salt solvent, from about 0.1 to about 10% w/w of at least one polyoxyethylene plant oil, and from about 0.1 to about 10% w/w of at least one polyoxyethylene sorbitan ester.
2. The mixture of claim 1 wherein the bispyribac salt is sodium.
3. The mixture of claim 1 wherein the weight to volume ratio of bispyribac to the C16 to C18 fatty acid methyl esters adjuvant system is from about 1:1 to about 1:10,000.
4. The mixture of claim 1 wherein the mixture comprises from about 0.001 to about 0.1% w/w bispyribac.
5. The mixture of claim 1 wherein the mixture comprises from about 0.1 to about 10% w/w of the C16 to C18 fatty acid methyl ester adjuvant system.
6. The mixture of claim 1 wherein the C16 to C18 fatty acid methyl esters adjuvant system comprises from about 0.5 to about 10% w/w of the dodecylbenzene sulfonate salt.
7. The mixture of claim 1 wherein the C16 to C18 fatty acid methyl ester adjuvant system comprises from about 1 to about 5% w/w of the at least one polyoxyethylene plant oil.
8. The mixture of claim 1 wherein the polyoxyethylene plant oil is castor oil.
9. The mixture of claim 1 wherein the adjuvant system comprises from about 1 to about 5% w/w of the at least one polyoxyethylene sorbitan ester.
10. The mixture of claim 1 wherein the polyoxyethylene sorbitan ester is sorbitan monotallate.
11. A method of increasing the activity of bispyribac, or a salt thereof, by applying to an area in need of weed control bispyribac and a C16 to C18 fatty acid methyl ester adjuvant system, wherein the C16 to C18 fatty acid methyl ester adjuvant system comprises from about 60 to about 99% w/w of C16 to C18 fatty acid methyl ester mixture, from about 0.1 to about 5% w/w of a dodecylbenzene sulfonate salt, from about 0.5 to about 4% w/w of a dodecylbenzene sulfonate salt solvent, from about 0.1 to about 10% w/w of at least one polyoxyethylene plant oil, and from about 0.1 to about 10% w/w of at least one polyoxyethylene sorbitan ester.
12. The method of claim 11 wherein the bispyribac is applied at a rate of from about 1 to about 100 grams per hectare.
13. The method of claim 11 wherein the C16 to C18 fatty acid methyl ester adjuvant system is applied at a rate of from about 1,000 to about 5,000 milliliters per hectare.
14. The method of claim 11 wherein the weed controlled is Palmer Amaranth ( Amaranthus palmeri ).
15. The method of claim 11 wherein the area in need of weed control is occupied by rice, soybean, cotton, peanut or corn plants.