Approaches for management of Meloidogyne incognita in Pulse crops
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Date
2022
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Publisher
AAU, Jorhat
Abstract
Investigation were carried out under Net House condition to evaluate the
reaction of eight chickpea germplasm, ten pea germplasm and forty six lentil germplasm
along with their respective susceptible checks for resistance against Meloidogyne
incognita. All eight germplasm of chickpea screened were found to be either susceptible
or highly susceptible to M. incognita. None of the germplasm were found to be resistant
to M. incognita. Among ten germplasm of pea, two germplasm viz., IPFD-99-13 and
IPFD-12-2 were found to be resistant, two germplasm were found to be moderately
resistant, and the rest six germplasm were found to be either susceptible or highly
susceptible. Out of forty six lentil germplasm screened, only one germplasm (IPL 81)
was found to be resistant, seven germplasm were found to be moderately resistant,
while the rest thirty eight germplasm were found to be either susceptible or highly
susceptible to M. incognita.
Study on the bio-intensive management of M. incognita on black gram
with bio-agents viz., Bacillus marisflavi, Bacillus altitudinis, Bacillus subtilis,
Trichoderma viride, Verticillium lecanii and Pseudomonas fluorescens showed
significant increase in plant growth parameters including root nodulation with
corresponding decrease in number of galls per root system, egg masses per root system,
and final nematode population over untreated control. The treatment with soil
application of Pseudomonas fluorescens @ 1x108 cfu/ml enriched in vermicompost @
20 g/m2 was found to be the most effective in enhancing plant growth parameters,
number of nodules per root system and reducing number of galls per root system, egg
masses per root system and final root-knot nematode population in soil. Nonetheless, all
the treatments significantly decreased number of galls, egg masses and final nematode
population in soil.