Archives

Investigation was carried out to find the pathogenic level of root-knot nematode, Meloidogyne incognita
in green gram. Result of the pathogenicity test revealed that plant growth parameter was inversely
proportional to the inoculum level of root-knot nematode, except fresh and dry weight of root. An initial
inoculum level of 100 nematodes per kg of pot soil caused significant reduction in plant growth
parameters and proved to be pathogenic to the green gram plants. Maximum galls and egg masses per
root system were recorded in 100 and 1000 J2 per kg of soil, which ultimately decreases at 10000
inoculum level. The nematode population in soil increases with increase in inoculum levels as well as
nematode reproduction rate was inversely proportional to the nematode inoculum level.
Keywords: Meloidogyne incognita, root-knot nematode, pathogenicity, Green gram, Vigna radiata.