Suppression of Root-Knot Nematode Disease in Eggplants by Antinematodal Streptomyces NA-369 in Artificially Infested Soil

抄録

Suppressive effects of antinematodal Streptomyces spp. strain NA-369 on Meloidogyne incognita infested soil were evaluated. The NA-369 amendment, prepared by fixing the cultured NA-369 strain in paper-pulp compost, was mixed with M. incognita-infested soil before eggplant cultivation. Decreases in the gall index of eggplants and M. incognita population density in soil and increases in the fresh shoot weight and total fresh fruit weight of eggplants and the free-living nematode population density in soil were observed in the NA-369 amendment treated zone compared with the untreated control zone. As comparative controls, wettable powder including endospores of Pasteuria penetrans (Pp-powder) had no suppressive effect on M. incognita. There was no interaction or synergism between the NA-369 amendment and Pp-powder in this experiment.