| abstract |
Compositions and methods for combatting insects, fungal and bacterial plant pests are disclosed wherein the active ingredient is a compound of the formula X-NH-Y wherein X is selected from the group consisting of a pyrazinyl radical bearing one to three substituents, and pyrimidinyl and pyridazinyl radicals bearing two to three substituents; and Y represents phenyl, naphthyl, pyridyl or diazinyl bearing at least one substituent; the substituents in each case selected from the group consisting of halogen, cyano, nitro, trifluoromethyl, lower alkoxy, lower alkylthio, benzylthio, lower alkyl and amino, provided that (a) said compound bears at least four substituents of which at least two are halogen atoms, and (b) where X represents a pyrimidinyl radical and Y represents a pyridyl radical there is at least one substituent other than halogen present. |