A - Human Necessities – 01 – N
Patent
A - Human Necessities
01
N
71/7.5
A01N 43/64 (2006.01) A01N 25/32 (2006.01) A01N 43/70 (2006.01) A01N 47/30 (2006.01)
Patent
CA 1137772
Abstract The present invention relates to a preemergence method of selectively controlling weeds in crops of cereals, and to a composition therefor. Up to now it has been virtually impossible to use s-triezines, phenyl- ureas and other photosynthesis inhibitors as preemergence herbicides in cereals, especially wheat and barley, because of their too potent action. This invention solves the problem by providing a composition for the preemergence control of weeds which, in addition to containing such photosynthesis inhibitors, contains a diphenyl ether or pyridyl- phenyl ether derivative as antagonistic component which neutralises or greatly diminishes the harmful action in cereals. In particular, the admixture of known nuclear-substituted phenoxy- phenoxyalkanoic acid derivatives or pyridyl-(2)-oxy-phenoxyalkanoic acid derivatives to commercially available 4,6-bis-alkylamino-s-tria- zines and phenylureas can influence the herbicidal action of these latter so advantageously that, in preemergence application, they no longer damage cereals when employed in conventional concentrations, without losing their potent action against weeds.
340924
Gerber Hans-Rudolf
Quadranti Marco
Fetherstonhaugh & Co.
Novartis Ag
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