straw, fertilizer, agricultural costs, erosion protection
The shortage of feed and bedding during a dry year forces farmers to remove straw from many small grain fields. The removal of this straw is not without cost to the soil. There are three major “costs” to removing straw from a field: 1) fertilizer value to subsequent crops, 2) loss of fresh organic matter, and 3) loss of erosion protection.
Gerwing, James R., "Alfalfa Autotoxicity" (1988). SDSU Extension Extra Archives. 256.