bisthiadiazolderivate and their salts, funds to combat of plant diseases in agriculture and horticulture and method for using this medium

摘要

A bis-thiadiazole derivative represented by general formula (I): CHEM wherein R1 and R2 represent H, C1-C8 alkyl, halo C1-C4 alkyl, unsubstituted or substituted phenyl, 5- or 6-membered heterocycle containing 1 to 3 hetero atoms selected from O, S and N, or the like; X1 and X2 represent O or S; Y1 and Y2 represent O, S or -N(R3)-; R represents C0-C30 alkylene, -(C)a(R3)(R4)- (R3 and R4 represent H, halogen, OH, C1-C4 alkyl, halo C1-C4 alkyl or the like) or the like; and a is 0 to 30; or a salt thereof, and an agrohorticultural disease controller containing said derivative or salt as an active ingredient.