All cropping systems require fertilizer inputs in order to maintain crop yields. However,excess fertilizer, especially nitrogen and phosphorus, can increase problems with water quality. It is important for farmers to use the appropriate rates and methods of fertilizer application to optimize yields and minimize the impact on the environment. The purpose of these trials was to investigate the effect of various fertilizer practices on crop yield.
Fawcett, Jim; Sievers, Josh; Rogers, Jim; Miller, Lance; Mitchell, Tyler; Beedle, Chris; and Rossiter, Lyle
"On-Farm Corn, Soybean, and Alfalfa Fertilizer Trials,"
Farm Progress Reports: Vol. 2015
, Article 130.
Available at: http://lib.dr.iastate.edu/farmprogressreports/vol2015/iss1/130