EFFECT OF BAU-BIOFUNGICIDE AND SOME PLANT ~ EXTRACTS AGAINST ROOT-KNOT (Meloidogyne javanica) OF CHILLI

Abstract

Seven treatments viz. BAU-Biofungicide (Trichoderma spp.), mustard (Brassica — campestris) oil-cake, basak (Adhatoda vasica), telakucha (Coccinia indica), takamondir (Tinospora cordifolia) and satodron (Leucas aspera) extracts in standard concentration with a control were tested against root-knot of chilli caused by Meloidogyne javanica through root dipping and soil drenching methods (after 7 and 21 days of transplantation). Among the treatments, BAUBiofungicide and mustard oil-cake extract (S) gave superior result as it had increased length of shoot and root, weight of shoot and root, number of fruit and weight of fruit per plant with the lowest galling incidence as well as the reduced population of Lz, L3, L4 and adult female of Meloidogyne javanica in chilli in all methods. Better effect on plant growth characters with lower galling incidence and development of the nematode was observed with basak, satodron, takamondir and telakucha extract (S) compared to the control. Lower effect on plant growth character was found with extract (S) of basak followed by satodron, takamondir and telakucha leaf extract (S). Negative correlations between number of galls with length of shoot and root, weight of shoot and root and number of fruit and weight of fruit and positive correlations between number of galls with egg, eggmass, Lo, L3, L4 as well as adult female under different treatments indicated the superior effect of the treatments as envisaged with the lower galling incidence and the suppressive activities of the nematode.