Abstract: A synergistic insecticidal composition comprises as a first ingredient the .beta.-exotoxin of Bacillus thuringiensis or a metal salt thereof and has a second ingredient of one or more of the following chemical insecticides:O,o-diethyl-O-(2-isopropyl-4-methyl-6-pyrimidyl) thionophosphate,O,o-dimethyl, .alpha.,.alpha.,.alpha.-trichloro-1-hydroxyethyl phosphonate,.alpha.-methoxy-4H-1,3,2-benzodioxaphosphorin-2-thione,O,o,-dimethyl S-(.alpha.-(ethoxycarbonyl)benzyl) phosphorodithioate,O,o-dimethyl S-(4-chlorophenyl) phosphorothioateThe first and second ingredients are used generally in a ratio of about 0.5:1 to 2.0:1 and may be dispersed in a major portion of an agronomically acceptable carrier.

Abstract: Noxious fungi on plants are controlled by applying thereto compounds having the general formula ##EQU1## wherein X and X' are halogen atoms, R is hydrogen atom or methyl group and R' is alkyl, haloalkyl, phenyl group or phenyl group substituted with at least one of halogen atom, alkyl group, alkoxy group and nitro group.