Production of Enriched Manures using Agricultural Wastes-A Review

Crop residues recycling plays an important role in sustaining crop yields by maintaining soil health. Most of agricultural wastes are utilized as fuel and decomposed in villages leads to foul odor, health hazard and environmental damage and their disposal has been a concern for the farmers as well as economist. Use of compost prepared through enrichment is best remedy for maintaining soil quality as well as productivity and partial replacement of mineral fertilizer. This has forced the farmers as well as scientiststo identify alternative methods to enrich the compost by use of different crop residues and also use of organic and inorganic additives to degradeat faster rate as well as to reduce the time and lignin contents in the decomposing materials. Incorporation of organic nitrogen through garden weeds and urea, inorganic additives like superphosphate and micronutrients apart from basic additives could result in compost with desirable C: N ratio and enhance microbial activity.