METHOD OF WEED GROWTH INHIBITION Russian patent published in 1994 - IPC

FIELD: agriculture. SUBSTANCE: for inhibition of weed growth killing zone is treated with derivative of N- phenylidine of the general formula I, where X - oxygen or sulfur; Y - hydrogen, fluorine; R₁ - hydrogen, C₁-C₆-alkyl, C₃-C₄-alkenyl, C₃-C₄-alkynyl, fluoroethyl, chloroallyl, cyanomethyl, C₁-C₂-alkoxy-C₁-C₂-alkyl, methoxycarbonylmethyl; R₂ - hydrogen or methyl; A - groups of formula II N-R₅ and III R₅ at A - hydrogen, or either A together with A form the group of formula IV R₃ and R₄, where Z - bound with carbon atom means oxygen atom, methylene group or -group; - hydrogen, lower alkyl, allyl, propargyl, fluoroethyl, methoxycarbonylmethyl; - are similar or different mean hydrogen or lower alkyl; n = 0 or 1. Consumption of synthesized compounds is 0.02-40 g/are. EFFECT: enhanced effectiveness of synthesized compounds. 13 tbl