Herbicidal compositions containing 2,4-diamino-6-chloro-5-methylthio-pyrimidine and herbicidal urea derivatives and method of treatment of cultures with said compositions.

摘要

1. Herbicidal compositions characterized in that they contain simultaneously, as active materials, 2,4-diamino-6-chloro-5-methylthio-pyrimidine or a mixture of the two isomeric compounds 2,4-diamino-6- chloro-5-methylthio-pyrimidine and 4,6-diamino-2-chloro-5-methyl-thio-pyrimidine in which the percentage of the first of these compounds is at least 80 %, and a herbicidal derivative of urea selected from the neburon of formula : see diagramm : EP0013636,P10,F1 the isoproturon of formula see diagramm : EP0013636,P10,F2 the chlortoluron of formula see diagramm : EP0013636,P10,F3 the metoxuron of formula see diagramm : EP0013636,P10,F4 the chlorbromuron of formula see diagramm : EP0013636,P10,F5 and the methabenzthiazuron of formula see diagramm : EP0013636,P10,F6 the ratio by weight 2,4-diamino-6-chloro-5-methylthio-pyrimidine/herbicidal derivative of urea or mixture of the two isomeric compounds/herbicidal derivative of urea in the compositions being from 1/10 to 1/1 in the case where the herbicidal derivative of urea is neburon, and from 1/10 to 10, preferably 1/4 to 4, in the case where the herbicidal derivative of urea is isoproturon, chlortoluron, metoxuron, chlorbromuron or methabenzthiazuron.