Biomanagement of disease complex of Meloidogyne incognita and Fusarium oxysporum f.sp ciceri on chickpea (Cicer arientinum., Butler 1918)
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Date
2021
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Abstract
In the present study on the interaction of Meloidogyne incognita and Fusarium
oxysporum f.sp ciceri on chickpea, the result indicated that dual inoculation treatments
significantly decreased plant growth parameters over the treatment with M. incognita
@1000 J2/kg soil and F. oxysporum @ 2% (w/w). The treatment with M. incognita @1000
J2/kg soil + F. oxysporum @ 2% (w/w) after 15 days of inoculation was statistically superior
in decreasing the plant growth parameters of chickpea. However, number of galls,
eggmasses, final nematode population was found maximum in single inoculation treatment
than dual inoculation treatments. The highest number of galls, eggmasses, final nematode
population were observed in the treatment with M. incognita @1000 J2/kg soil. The
maximum disease incidence was recorded in the treatment with M. incognita @1000 J2/kg
soil and F. oxysporum @ 2% (w/w) after 15 days of inoculation.
Studies on the management of disease complex of Meloidogyne incognita and Fusarium
oxysporum on chickpea with microbial consortia, vermicompost and Glomus fasiculatum
alone or in combination under microplot condition showed that all the treatments differed
significantly over untreated control in respect of increaseing plant growth parameters and
yield of chickpea. The seed treatment with microbial consortia @ 5ml/l + soil application
of vermicompost enriched microbial consortia @ 2t/ha + seed treatment with microbial
consortia @ 5ml/l + soil application of Glomus fasciculatum spores/m2 was found to be most
effective in increasing plant growth parameters, yield, N,P, and K content in soil. All the
treatment significantly decreased the number of galls, eggmasses, nematode population and
fungal population in soil and percent disease incidence.
In the pilot field trial, conducted at farmers field with the best treatment combination
found under microplot trial for the management of disease complex of Meloidogyne
incognita and Fusarium oxysporum on chickpea showed that the seed treatment with
microbial consortia @ 5ml/l + soil application of vermicompost enriched microbial
consortia @ 2t/ha + seed treatment with microbial consortia @ 5ml/l + soil application of
Glomus fasciculatum spores/m2 effective in increasing plant growth characters, yield and
reducing in number of galls, final nematode population in soil and percent disease incidence
over untreated control.