Effect of Meloidogyne incognita on the growth characteristics of Vigna mungo treated with leaf extract of Mimusops elengi

摘要

The present study was conducted to evaluate the effect of leaf extract of inagilam, Mimusops elengi on the root-knot nematode, Meloidogyne incognita infecting the black gram, Vigna mungo with different inoculums levels (5, 10, 15, 20 and 25 egg-masses/plant) with different concentrations (5, 10, 15, 20 and 25 ppm). The control and treated plants were analyzed for various growth characteristics such as, root and shoot length, fresh and dry weight of root and shoot, leaf area, root gall index and chlorophyll content after 65 days. These growth characteristics found decreased with increasing inoculum levels of egg-masses and increased with increasing concentrations of leaf extract treatment and fresh and dry weight of root and root gall index found increased with increasing inoculum levels of egg-masses and decreased with increasing concentrations of leaf extract treatment.