Cyanomethyl trithiocarbonates as nematicides

A method for the control of nematodes comprising contacting the nematodes or their food supply, habitat or breeding ground with a nematicidally effective amount of at least one compound of formula I:

• wherein R is C1-C8-alkyl, unsubstituted or substituted with 1, 2 or 3 radicals selected from the group consisting of halogen, amino, nitro, cyano, C1-C4-alkenyl, C1-C4-haloalkenyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylthio, 5- to 10-membered heteroaryl containing as ring members 1, 2, 3 or 4 heteroatoms selected from oxygen, sulfur and nitrogen, and phenyl, wherein the heteroaryl and phenyl radicals may be substituted with any combination of 1 to 5 halogen atoms, 1 or 2 cyano groups, 1 or 2 nitro groups, 1 to 3 C1-C4-alkyl groups, 1 to 4 C1-C4-haloalkyl groups, 1 to 3 C1-C4-alkoxy groups or 1 to 3 C1-C4-haloalkoxy groups.

A method for the protection of plants from infestation or attack by nematodes comprising applying to the plants or to the soil or the water in which they are growing a nematicidally effective amount of at least one compound of formula I:

• wherein R is C1-C8-alkyl, unsubstituted or substituted with 1, 2 or 3 radicals selected from the group consisting of halogen, amino, nitro, cyano, C1-C4-alkenyl, C1-C4-haloalkenyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylthio, 5- to 10-membered heteroaryl containing as ring members 1, 2, 3 or 4 heteroatoms selected from oxygen, sulfur and nitrogen, and phenyl, wherein the heteroaryl and phenyl radicals may be substituted with any combination of 1 to 5 halogen atoms, 1 or 2 cyano groups, 1 or 2 nitro groups, 1 to 3 C1-C4-alkyl groups, 1 to 4 C1-C4-haloalkyl groups, 1 to 3 C1-C4-alkoxy groups or 1 to 3 C1-C4-haloalkoxy groups.