Northern Research and Demonstration Farm
During the fall and winter months, many farmers are applying chicken manure as a fertilizer source. Although not desirable, applications have been made to snow-covered fields. In 2000, an experiment was started to evaluate yield response to chicken litter applied to snow-covered fields. The objective of the experiment was to document yield responses to applications made at two different rates, during the winter and spring.
Iowa State University
Holmes, John D. and Rueber, David, "Yield Responses to Winter Application of Chicken Manure" (2002). Iowa State Research Farm Progress Reports. 1655.