Shell Oil Comapny

Alan J Sampson

Clive A Raven

Ernest Haddock

Herbicidal compositions comprising an N,N-disubstituted alanine derivative and 2-ethylamino-4-(1-cyano-1-methyl ethylamino)-6-chloro-1,3,5-triazine or 2-ethylamino-4-(1-cyano-1-methyl ethylamino)-6-methylthio-1,3,5-triazine exhibit synergistic responses against wild oats. The addition of phenoxy-alkanoic acid derivatives, whether as racemate or R-(+)-isomers, causes an improved effect on yields without substantial loss of activity against wild oats.

Herbicide mixture

Weeds are controlled by N-substituted alanine compounds of the general formula: ##STR1## wherein the symbols have defined meanings.

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Sittingbourne, United Kingdom

Alan J Sampson