A novel process for commercial production of biopesticides has been invented. The process involves two steps. In the first step, mass culture or stock culture of biocontrol fungi and bacteria is prepared on saw dust, soil and molasses mixture. The second step involves immobilization of the bioagents on a fly ash based carrier. Using the process following three biopesticides based on Trichoderma harzianum, Pochonia chlamydosporia and Pseudomonas fluorescens have been developed. The three biopesticides with their names and the diseases they control are as follows. 1. Biowilt-X is a Biofungicide of Trichoderma harzianum to control fusarial wilt disease caused by fusarium spp. 2. Bionem-X is a Bionematicide of Pochonia chlamydosporia to control root-knot disease caused by Meloidogyne spp. 3. Biocomp-X is a Biofunginemacide of Pseudomonas fluorescens to control wilt disease complex caused by Meloidogyne and Fusarium spp. Jointly.