The utilization of such crop residues as wheat and oat straw presents a perplexing problem, especially to the grain farmer who would maintain the organic matter content of his soil. It has been generally observed that such materials added to the soil decrease the yields of the following crops.
Proceedings of the Iowa Academy of Science
©1928 Iowa Academy of Science, Inc.
Smith, Frederick B.
"The Nitrate Assimilating Power of the Soil and Some Nitrate Assimilating Soil Bacteria,"
Proceedings of the Iowa Academy of Science, 35(1), 69-74.
Available at: https://scholarworks.uni.edu/pias/vol35/iss1/9