Pathogenicity of root-knot nematode, Meloidogyne javanica pt. 2 in groundnut

A study on the pathogenicity of root-knot nematode, Meloidogyne javanica pt. 2 to determine the economic threshold level in groundnut was conducted under pot condition at the Department of Nematology, BACA, AAU, Anand. An inoculum density of 1000 juveniles per plant per pot resulted in significant reduction of groundnut growth and development. Moreover, an increase in inoculum levels from 10 to 10,000 J2 per plant led to a progressive increase in nematode population in both roots and soil, as well as the total nematode population. Conversely, the reproduction rate of the nematode declined with increasing inoculum levels, with the highest reproduction rate observed at 10 J2 per plant and the lowest at 10,000 J2 per plant.