| Abstract: Under screenhouse conditions , two mashed leaves of plants belonging to the genus Brassica, cabbage (Brassica oleracea var. Capitata L.) and kohlrabi (Brassica caulorapa L.) were used as pre-and at sowing biofumigants at 20g/pot for managing root knot nematode, Meloidogyne incognita on cowpea (Vigna unguiculata (L.) Walp)compared to metam potassium and metam sodium as chemical biofumigants as well as untreated check. It was found that, in general, there was a positive correlation between the time of the addition of the plant residue (10 and 5 days before sowing and at sowing time) and the percentage final nematode population reduction i.e., the highest percentages final nematode reduction (70.4 and 82.1%) occurred when Brassica oleracea and... |
