The present invention relates to the use of compounds 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 for the control of nematodes, a method for the control of nematodes, and a method for the protection of plants from infestation or attack by nematodes.