Severity of Root-knot Nematode Meloidogyne spp. on Brinjal: Rating scheme of rootknot diseases of brinjal in Nepal, with perineal pattern analysis and species identification - Tapa blanda

Nepal has mostly rainfed agriculture. The fields are not maintained with constant supply of moisture, ie alternate wetting and drying prevails. Runoff water and floods enter crop fields. Internal and external qurantine cant be followed by farmers. Hygiene and cleanliness cant be implemented even at government farms. The spread of rootknot disease might reach threatening levels in some crops and also established in newer sites previously known to be free from nematode disease. The thesis is hoped to bring awareness among government farms, ngo-led agricultural projects, educated layety and even to Nepalese farmers. The severity rating modality presented here might be useful to future collegues and students. The eggplant crop based enterprise may be benefitted in future in Nepal.

The study was undertaken to develop standard severity rating scheme of rootknot diseases for the open field conditions which included eggmass count,number of galls/10 cm root, galling percent, gall size, J2/g root and soil, root-rot scale, yield reduction estimate. Species identified based on female perineal pattern, pre mid and 93 DAT J2 counted.