STABLE, DRY HERBICIDAL COMPOSITIONS AND METHOD FOR THEIR PREPARATION AND STABILIZATION

摘要

Herbicidal composition comprising: (a) N-(4-fluorophenyl)-N-(1-methylethyl)-2-((5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy)acetamide (flufenacet) and 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one (metribuzin) mixture; (b) from about 0.1-10% by weight of a pH-adjusting agent; and (c) a pH of 2.8-5.4; wherein the pH-adjusting agent is selected from citric acid and ammonium and potassium salts of sulfuric acid and phosphoric acid that are acidic in nature. An Independent claim is also included for preparing a stable dry flowable or dry composition comprising: (a) combining flufenacet and metribuzin; (b) adding 0.1-10% by weight of a pH-adjusting agent, the composition having a pH of from 2.8-5.4. The composition excludes the presence of ammonium chloride, ammonium citrate and disodium citrate.