Kumar, SunilThakur, Purnima2023-07-172023-07-172022-02-08https://krishikosh.egranth.ac.in/handle/1/5810198307The present investigation entitled “Biology and bio-management of root-knot nematode (Meloidogyne incognita) (Kofoid and White) Chitwood in brinjal (Solanum melongena L.)”was carried out to study the biology of M. Incognita & found that the nematode completed it’s life cycle in 25-29 days with fecundity rate of 276 egg masses. Ten germplasms of brinjal were screened to check their resistence/susceptibility against M. Incognita and among all the germplasms screened, Pusa Purple Long was found to be the most susceptible variety while, F1 Hybrid Brinjal No. 143 showed resistence towards M. Incognita. The effect of different leaf powder of indigenous plants (Cannabis sativa @ 20g, Eupatorium sp.@ 20 g and Lantana camara @ 20g/1000 cm3 of soil), bio-agents @ 2g/1000 cm3 of soil (T. Viride, P. Fluroescens and Paecilomyces sp.) and oil cakes @ 10g/1000 cm3 of soil ( mustard, neem and groundnut) was evaluated in different combinations. T. Viride in combination with neem oil cake and Lantana camara was found to be the most effective among all the treatments tested and played an important role in reducing the nematode population both in soil ( per 200cc of soil) and root (per 5g) which further leads in reduction of root gall index of brinjal. In another experiment neem oil cake in combination with T. Viride mixed in vermicompost was found more effective as compared to the combination mixed in farm yard manure in improving the plant status of brinjal like shoot length, root length, shoot weight and root weight.EnglishThesis