Interaction of Meloidogyne incognita and Rotylenchulus reniformis on tomato

Abstract

Antagonism between two or more nematode species infesting the same host has been investigated by several workers with varying results. Meloidogyne incognita (Kofoid et White) Chitwood inhibited the infection of soybean by Heterodera glycines (Ichinohe) Skarbilovich (Ross, 1964) or tomato by Pratylenchus penetrans (Cobb) Filipjev and Schuurmans St. (Estores and Chen, 1972), but in studying the interaction of M. hapla Chitwood, M. incognita and P. brachyurus (Godfrey) Goodey, on tobacco, Johnson and Nusbaum (1970) found that the reproduction of M. incognita was decreased in the presence of P. brachyurus whereas that of M. hapla was unaffected by either of the other species. On bentgrass, Tylenchorhynchus agri Ferris but not P. penetrans inhibited M. naasi Franklin multiplication (Sikora et al., 1972). Recently, Chapman and Turner (1975) found that the egg laying of P. penetrans on red clover or alfalfa was decreased in relation to the number of M. incognita present.