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Article
Nitrogen Loss—Spring 2013
Integrated Crop Management News
  • John E. Sawyer, Iowa State University
Document Type
Article
Publication Date
6-10-2013
Abstract

Dry soils across Iowa from deficit precipitation following the drought in 2012 have changed to excess wetness this spring. Unfortunately, precipitation to replenish subsoil moisture has been much more than needed. As I wrote in an ICM News article earlier this spring, one downside to the excess precipitation has been movement of carryover nitrate deeper into the profile and to tile lines, resulting in high nitrate-N concentrations in surface waters. This means there is less nitrate-N carryover to be utilized by 2013 crops, although as noted in the previous article, not all of the carryover N moved below the three-foot depth.

Copyright Owner
Iowa State University
Language
en
File Format
application/pdf
Citation Information
John E. Sawyer. "Nitrogen Loss—Spring 2013" (2013)
Available at: http://works.bepress.com/john-sawyer/177/