Antagonistic effect of the endomycorrhizal fungus, Glomus fasciculatum on Rotylenchulus reniformis penetration and population development on cotton

Pre-inoculation and simultaneous inoculation of cotton (Gossypium hirsutum cv. ‘Coker Carolina Queen’) plants with Glomus fasciculatum reduced Rotylenchulus reniformis juvenile penetration, egg mass production and population build up on mycorrhizal inoculated plants when compared to non-mycorrhizal controls. Very few nematodes were located in and near the root tissues extensively colonized by the fungus. The decreased number of nematodes and egg masses per root system was also reflected in reduced soil population. Simultaneous inoculation of G. fasciculatum and R. reniformis at planting resulted in reduced nematode penetration conversely the number of chlamydospores recovered from the soil of mycorrhizal roots.