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, (*PDF version, 924 KB 4 pages).

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



Free Slide Rule Offers Quick Calculation for Nitrogen Rates

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

Software Tools


Soil Test

University of Nebraska Department of Agronomy and Horticulture site for fertilizer recommendations:

Soil Test Nebraska website

Calculate fertilizer recommendations for all crops produced in Nebraska:

  1. Directly enter crop and soil test information, or,
  2. Upload files with test information from analytical laboratories.


CropWatch: Soil Management

Soils and soil management recommendations