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Article
Corn Stalk Nitrate Interpretation
Integrated Crop Management News
  • John E. Sawyer, Iowa State University
Document Type
Article
Publication Date
9-14-2010
Abstract
You’ve gotten results from corn stalk nitrate samples collected this fall. (Corn stalk nitrate analysis form.) Now, what do the results mean? The stalk nitrate test is based on the concentration of nitrate-N in the lower corn stalk (8 inch segment from 6 to 14 inches above the ground) when the plant reaches maturity (See Cornstalk testing to evaluate nitrogen management, PM 1584). In general, a larger amount of plant-available N in the soil during the time period before plant maturity results in a greater concentration of nitrate in the lower stalk. However, the stalk nitrate-N concentration can be greatly influenced by other external and internal plant factors.
Copyright Owner
Iowa State University
Language
en
File Format
application/pdf
Citation Information
John E. Sawyer. "Corn Stalk Nitrate Interpretation" (2010)
Available at: http://works.bepress.com/john-sawyer/42/