Crop Residues: Boon for Agriculture- A Review

Abstract Crop residues, the byproducts left after the harvesting of crops, represent a valuable yet often underutilized resource in sustainable agricultural systems. These residues, which include plant stems, leaves, roots, and other parts not consumed by humans or livestock, have the potential to significantly enhance soil health, improve crop yields, and contribute to more sustainable farming practices. This review synthesizes recent literature on the multifaceted role of crop residues in modern agriculture, examining how their proper use can support vital soil processes such as nutrient cycling, organic matter replenishment, and moisture retention. By improving soil structure and increasing microbial activity, crop residues can foster healthier, more fertile soils, which in turn support higher and more resilient crop yields. However, the management and utilization of crop residues come with challenges, such as competition with other uses (e.g., for animal feed or bioenergy production), potential risks of disease transfer, and the need for proper residue decomposition to avoid nutrient imbalances. The review further explores various management strategies for integrating crop residues into agricultural practices, including mulching, composting, and incorporating residues into no-till farming systems. These strategies can optimize the benefits of crop residues, reducing the need for synthetic fertilizers and improving overall environmental sustainability. Emphasizing the importance of crop residues in supporting soil organic matter, nutrient cycling, and ecological health, this review highlights their crucial role in advancing sustainable agricultural practices and fostering long-term environmental stewardship.