Effect on Hatching and Mortality of Root-knot Nematode (Meloidogyne javanica) by Bio-agents
Kavita Choudhary *
Division of Nematology, Rajasthan Agriculture Research Institute, Durgapura, Jaipur, SKNAU, Jobner, Jaipur, Rajasthan 303329, India.
S. P. Bishnoi
Division of Nematology, Rajasthan Agriculture Research Institute, Durgapura, Jaipur, SKNAU, Jobner, Jaipur, Rajasthan 303329, India.
Raju Dhayal
Division of Nematology, Rajasthan Agriculture Research Institute, Durgapura, Jaipur, SKNAU, Jobner, Jaipur, Rajasthan 303329, India.
B. S. Chandrawat
Department of Nematology, SKN College of Agriculture, SKNAU, Jobner, India.
Monu Kumari
Department of Horticulture, Rajasthan College of Agriculture, MPUAT, Udaipur, Rajasthan, India.
Vishnu Gurjar
Division of Nematology, Rajasthan Agriculture Research Institute, Durgapura, Jaipur, SKNAU, Jobner, Jaipur, Rajasthan 303329, India.
Hemraj Gurjar
Division of Nematology, Rajasthan Agriculture Research Institute, Durgapura, Jaipur, SKNAU, Jobner, Jaipur, Rajasthan 303329, India.
*Author to whom correspondence should be addressed.
Abstract
Investigations were carried out in vitro condition to evaluate the antagonistic effect of fungal and bacterial bio-agents. For effective management of root-knot nematode experiment was conducted in laboratory condition using the culture filtrate (5, 10 and 20 percent concentrate) of bio-agents (viz., Trichoderma viride, Trichoderma harzianum, Purpureocillium lilacinum, Pochonia chlamydosporia and Pseudomonas fluorescens). Experimental results showed that all the tested bio-agents significantly reduced the percent hatched juveniles and increased the percent mortality of juveniles. Among the tested bio-agents T. viride was found most effective treatment with minimum percent hatched juveniles and maximum percent mortality on eggs and juveniles of Meloidogyne javanica.
Keywords: Root-knot nematode, meloidogyne spp, bio-agent, hatching, mortality