Bio-Management of Root-Knot Nematode, Meloidogyne incognita on Cowpea (Vigna unguiculata L.)

A pot culture experiment was conducted to study the effect of fungal and bacterial bio-agents viz. Trichoderma harzianum, T. viride and Pseudomonas fluorescens @ 5 g, 7.5 g and 10 g/kg seed against root-knot nematode, M. incognita infecting cowpea. Chemical check (carbosulfan 3% w/w) and untreated check were also maintained for comparison. The results of the present study revealed that the maximum shoot length, root length, shoot weight and root weight and minimum number of galls/plant, egg masses/plant, eggs/egg mass, nematode population/100cc and total nematode population were recorded with T. harzianum @ 10 g/kg seed followed by T. viride @ 10 g/kg seed and P. fluorescens @ 10 g/kg seed T. harzianum @ 10 g/kg seed over the control.