Crop residues are the leftover plant materials that remain in the field after harvesting crops. This includes parts like stems, leaves, and roots. Farmers often leave these residues on the ground to improve soil health, as they can decompose and add nutrients back into the soil. Additionally, crop residues can help prevent soil erosion by protecting the soil surface from wind and water. They can also provide habitat for beneficial organisms, such as earthworms and microbes, which contribute to a healthy ecosystem. Proper management of crop residues is essential for sustainable agriculture.