Organic manure has been a cornerstone of sustainable agriculture for centuries, providing a natural and chemical-free means to boost soil fertility and increase crop yields. This abstract delves into the historical roots of organic manure usage, its classification and the various sources, benefits and applications it offers in modern farming practices. Today, farmers worldwide are shifting away from chemical fertilizers due to their detrimental effects on soil health, opting instead for organic alternatives. One notable study examined the combined impact of bovine and poultry manure with urea on soil characteristics, plant physiology, and crop yield, presenting a promising alternative for enhancing soil condition and rice grain output. Organic manure comprises various sources, including farmyard manure (FYM), compost, vermicompost, and green manure. Each source has unique nutrient profiles, making them suitable for different soil types and crop requirements. For example, FYM contains bedding, dung and urine, with slow-releasing nutrients. Sheep and goat manure boasts higher nutrient content, while poultry manure is rich in nitrogen, phosphorus and potassium. Green manure crops like sunhemp and dhaincha are strategically planted to enrich the soil and address soil erosion issues. Sewage and sludge, when composted, also provide valuable organic matter for soil improvement. The composting process reduces harmful chemicals and stabilizes the material for safe application in agriculture. Vermiculture, or the use of earthworms to biodegrade organic waste, is another innovative approach. Earthworms enhance soil quality by transforming organic waste into nutrient-rich vermicompost, improving nutrient cycling in the soil. Species like Eisinia Foitida, Eudrilus eugeniae and Perionyx excavatus are commonly used in vermiculture due to their efficiency in organic waste decomposition.