Project title: Improving Nutrient Management for Soybean

Principal investigators: Viacheslav Adamchuk, Richard Ferguson, Charles Shapiro, Charles Wortmann

Duration: 2009-current

Funding: Nebraska Soybean Board

Contact:  

Charles Wortmann, Department of Agronomy and Horticulture, UNL, 58C Filley Hall, Lincoln, NE 68583-0951, (402) 472-2909 cwortmann2@unl.edu

Projects description:

Variable rate liming. Mapping and the efficiency of variable rate liming are compared using blanket application, grid sampling, and mapping with the Veris Mobile Sensor Platform. The objectives are:

1. to develop an inexpensive screening procedure to identify fields suitable for variable rate liming,
2. to quantify agronomic and economic advantages of variable rate liming in Nebraska growing conditions, and
3. to share our findings with producers, consultants and service providers who regularly treat soil acidity in agricultural fields, as well as with equipment manufacturers.

Nitrogen application to irrigated soybean during early reproductive growth.

To determine for irrigated soybean in eastern and south central Nebraska:

1. the probability of response to soil application of N at R3 for high yield irrigated soybean,
2. the conditions where response is most likely to occur, and
3. to develop a practical framework for N management in irrigated soybean in Nebraska .

Key results:

Publications:

Ferguson, R.B., C.A. Shapiro, A. R. Dobermann, C.S. Wortmann, 2003. Fertilizer Recommendations for Soybeans. NebGuide G87-859-A (Revised August 2003), University of Nebraska.