Abstract: In a greenhouse study P. lilacinus, T. harzianum and T. flavus were used as seed treatment and soil drench. Seed treatment by P. lilacinus reduced gall formation, egg mass production, nematode soil and root densities as compared to control and other treatments. P. lilacinus improved plant growth followed by T. flavus and T. harzianum comparing with control. In another experiment, where soil was treated with conidial suspension, maximum plant height and shoot weight was achieved by P. lilacinus > T. harzianum compared to control, whereas T. flavus was found less effective in the enhancement of plant tops. Maximum suppression in gall formation (at p <0.01) and egg mass production (at p<0.001) was obtained in okra plants treated with P. lilacinus whereas T. flavus and T. harzianum were almost equally effective. Conidial suspension of microbial antagonists used as soil amendment also reduced nematode root invasion (at p<0.001) as well as soil densities