1,2,3 THIADIAZOLE-3IN-5-YLIDENE-UREA DERIVATIVES,PROCESS FOR MAKING THE SAME AND COMPOSITIONS CONTAINING THE SAME HAVING GROWTH REGULATING ACTIVITY FOR PLANTS

摘要

1,2,3-Thiadiazole-3-in-5-ylidene-urea derivative of the formula I in which R1 is hydrogen or alkyl which may be substituted in one or several places by oxygen or sulfur and wherein R2 and R3 have the meaning as given in the attached specification and wherein X is oxygen or sulfur. The compounds have properties suited for controlling the natural growth and natural development of plants and in addition have a superior defoliating property without accompanying unpleasant odors.