Soil Management to Optimize Corn Production

pale corn plantNutrient Deficiencies

Key to Nutrient Deficiencies in Corn and Sorghum - CropWatch article,  July 2009
Plant symptoms can be used to differentiate and identify crop nutrient disorders. Symptoms of nutrient deficiency vary with variety, growing conditions, and plant age and similar symptoms may be caused by other abiotic or biotic stresses. Use this key to help identify 7 nutrient disorders observed in Nebraska corn and sorghum.

Related Publications

Much nitrogen is often applied which needs to be well managed to minimize water contamination: Agricultural Nitrogen Management for Water Quality Protection in the Midwest: a Heartland Regional Water Coordination Publication, RP189 (*PDF 1.85 MB, 32 color pages).

Soil sampling is essential to good nutrient management. Guidelines for Soil Sampling, G1740, (924 KB 4 pages).

*PDF documents require the Adobe Acrobat Reader. Download free.



Slide Rule Offers Quick Calculation for Nitrogen Rates

slide rule imageClick here for more information on how to obtain your slide rule from CropWatch.

Software Tools

  • Uganda Fertilizer Optimizer  - is intended to maximize net returns on investment in fertilizer for finance constrained crop production through optimized selection of crop-nutrient-rate combinations. It considers 15 crop-nutrient response functions including functions for maize, sorghum, rice, dry bean, peanut, and soybean. NEW
    requires Excel 2007 or later
  • Hybrid-Maize Model - A computer program for simulating corn growth and yield
  • Corn Nitrogen Recommendations Calculator
  • Yield Check - An algorithm for filtering yield monitor data. (compressed zip file includes PDF explanation document)