PURPOSE: A harbicide having extremely improved weeding effect against a Deccan grass, annular broad-leaved weed, especially perennial weed, comprising 3-(4- crotyloxyphenyl)-1,1-dimethylurea and a sym-triazine-based compound as active ingredients.
CONSTITUTION: A herbicide comprising (A) 3-(4-crotyloxyphenyl)-1,1-dimethylurea or (B) 3-[4-(3-choloro-2-butenyloxy)phenyl]-1,1-dimethylurea, and a sym- triazine-based compound as active ingredients. The herbicide has powerful weeding effect against a Decan grass, which A or B essentially possesses, exhibits powerful killing action on weeds from annular broad-leaved weeds, e.g., monochoria, tooth cup, etc. to perennial weeds, e.g., arrowhead, Alisma canaliculatum A. Br. et Bouche, especially shows excellent synergistic action on arrowhead, which can not be expected by each of the single ingredient. The blending ratio of the former to the latter in weight is 1:0.1W5.
TAKETOMI IWAO
OOMAE HIROSHI
