Department of Entomology & Apiculture, Dr. Y.S. Parmar University of Horticulture & Forestry, Solan (Nauni) 173 230 (H.P.).
The seasonal variations in population densities of the plant parasitic nematodes, Tylenchorhynchus mashhoodi, Helicotylenchus dihystera, Meloidogyne incognita and Pratylenchus pratensis in the rhizosphere of apple trees at Solan, has been studied over one year period. The fluctuation in the population densities of H. dihystera and M. incognita was correlated more with the temperature than with soil moisture. The variation in the population densities of T. mashhoodi and P. pratensis could not be explained by the variation in temperature and moisture.
Population, temperature, moisture, apple, Tylenchorhynchus mashhood, Meloidogyne incognita, Helicotylenchus dihystera, Pratylenchus pratensis
