Corn stubble | Credit: Ohioline

Agricultural field residues are materials left in an agricultural field or orchard after the crop has been harvested. These residues specifically include stalks and stubble (stems), leaves, seed pods, and roots that remain in the field following harvest.

Beyond their agronomic functions providing multiple benefits for soil health and farm productivity, crop residues from the field serve as lignocellulosic feedstocks for biofuel production.