Nemastatic Activity of Benfuracarb against Southern Root-Knot Nematode (Meloidogyne incognita)

The nemastatic effects of benfuracarb, a derivative of carbofuran, against the southern root-knot nematode (Meloidogyne incognita) were compared with those of carbofuran. Benfuracarb did not suppress juvenile migration in water agar at 100ppm, but suppressed aggregation and invasion to tomato roots at 5ppm. On the other hand, carbofuran suppressed juvenile migration at 10ppm and invasion at 5ppm, but did not suppress its migration and aggregation to tomato roots at 5ppm. These results suggested that benfuracarb has no suppressive action against nematode migration but inhibits invasion of tomato roots, whereas carbofuran possesses both activities. Accordingly, benfuracarb is considered to inhibit juvenile aggregation at totomato roots.