Project title: Improving Nutrient Management for Grain Sorghum

Principal investigator: Charles Wortmann

Duration: 2002-current

Funding: USAID-INTSORMIL

Contact:

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

Project description:

Various topics have been and are currently being addressed including N rates, starter fertilizer use, row-cleaning, and alternative nutrient management products.

Key results:

Recommendations for N rates were revised for sorghum following soybean in rotation and now include a price factor. Starter fertilizer application, sulfur application, and row cleaning often resulted in increased early growth but did not affect yield.

Publications:

Wortmann, C.S., M. Mamo, and A. Dobermann. 2007. Nitrogen response of grain sorghum in rotation with soybean. Agron. J. 99:808-813.

Wortmann, C.S. and M. Mamo. 2006. Starter fertilizer and row cleaning did not affect yield of early planted, no-till grain sorghum. Crop Management J. Nov. 2006.

Wortmann, C.S., S.A. Xerinda, M. Mamo and C.A. Shapiro. 2006. No-till row crop response to starter fertilizer in eastern Nebraska: I. irrigated and rainfed corn. Agron. Jour. 98:156-162.

Wortmann, C.S., S.A. Xerinda, and M. Mamo. 2006. No-till row crop response to starter fertilizer in eastern Nebraska: II. rainfed grain sorghum. Agron. J. 98: 187-193.

Wortmann, C.S., A.R. Dobermann, R.B. Ferguson, G.W. Hergert , C.A. Shapiro, and D. Tarkalson. 2006. Fertilizer suggestions for grain sorghum. NebGuide G1669, University of Nebraska-Lincoln.

Response to starter fertilizer on no-till grain sorghum in eastern Nebraska. Crops and Soils, spring 2007:20-24. 

Hergert, G.W., and C.S. Wortmann, 2006. Using starter fertilizer for corn, grain sorghum and soybeans. NebGuide G361. University of Nebraska-Lincoln.