PURPOSE: The titled composition capable of controlling weeds from ungerminated stage to grown stage completely for a long time by a less amount than that of a single agent, having no phytotoxicity to a paddy-rice plant, comprising a specific compound and 2-(β-naphthoxy) propionanilide as active ingredients.
CONSTITUTION: 1pts.wt. N-(α,α-dialkylbenzyl)phenylacetamide derivative such as compounds shown by the formula II and formula III, etc., shown by the formulaI(X is H, halogen, 1W3C alkyl or alkoxy; R1 is 1W3C alkoxy; R2 is H, 1W3C alkyl, 2W6C alkoxyalkyl or aryl; R3 and R4 are 1W4C alkyl with the proviso that the case where both R3 and R4 are CH3 is omitted) having high herbicidal effect on Echinochloa crus-galli Beauv. var. praticola Ohwi, annual and perennial weeds in the early stage of growth, having high safety to paddy-rice plant is blended with preferably 0.1W10pts.wt. 2-(β-naphthoxy)propionanilide, a well-known herbicide, having the same effect as that of the compound shown by formulaIexcept Echinochloa crus-galli Beauv. var. praticola Ohwi to give active ingredients.
YOSHIKAWA NOBUYUKI
OGAWA HIDEAKI
