The rapid change in the agroecosystem leaves a snag in the establishment of harmony in the discard of the disturbed agroecosystem. This disturbance is caused by extention of cultivated areas, monoculture, intensive cultivation, faulty cropping pattern, irrational crop husbandry by way of unbalanced chemical fertilizer application, tapping of subsoil water, introduction of newer varieties of crop and indiscriminate application of synthetic pesticides. The pesticide consumption has increased by 20% per annum although agricultural production is almost static. The insects and diseases cause over Rs. 29,000 crores crop losses per annum. This situation has come up because of killing of natural enemies, resistant problem among insects and diseases to pesticides, residue hazards of pesticides, and chemical fertilizers and upsetting of balance in nature.