Integrated Crop Management News
 

Document Type

Article

Publication Date

6-17-2014

Abstract

Some areas of Iowa have recently received heavy rainfall, resulting in soils saturated or with standing water. Following are excerpts from an article published in 2011 when similar conditions occurred. The early spring 2014 season was on the cold side, so conversion of ammonium fertilizers to nitrate should have been slower than normal. This could be helpful for avoidance of nitrate losses, as would recent sidedress application of ammonium-containing fertilizers. However, wet soils in June are much more conducive to nitrate loss (compared to early spring) as soils are warm and, with prolonged saturation and tile flow, losses mount. Remember, ammonium is held on the soil exchange complex, but nitrate can leach or be denitrified to nitrogen (N) gasses. Also remember that corn plants do not respond well to saturated soils, and therefore can express symptoms similar to N deficiency when they really are showing excess water stress.

Copyright Owner

Iowa State University

Language

en

File Format

application/pdf

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The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.