Research Papers: Distribution of Nematicides in Soil and Its Influence on the Control of Sugarbeet Cyst Nematode Heterodera Schachtii and Root-Knot Nematode Meloidogyne Incognita

The effect of distribution of nonvolatile nematicides on the control of root-knot rematode, Meloidogyne incognita (Kofoid & White) Chitwood on tomato, and the sugarbeet cyst nematode, Heterodera schachtii Schmidt on sugarbeet, was tested in the greenhouse using 20 cm diam plastic pots. Variation of distribution patterns is unlikely to limit the efficacy of aldicarb and oxamyl, but can limit the efficacy of carbofuran and terbufos. These differences can be attributed to the greater mobility of aldicarb and oxamyl in soil. However, it was clearly demonstrated that all four nematicides effectively prevented nematode invasion of the roots, when the nematodes were in contact with the nematicides.