Integrated Crop Management News
 

Document Type

Article

Publication Date

2-26-2001

Abstract

Can I test my fields for nitrate in early spring, before preplant applications of nitrogen (N)? Many producers who do not want to sidedress their N are asking this question. The question is common because some states recommend testing soils for nitrate at this time. Such recommendations make sense where the amounts of nitrate carried over from one season to the next vary greatly. Great variability in this "residual nitrate" should be expected in fields treated with high rates of fertilizer N for the previous crop. The value of such testing is questionable, however, for corn grown after soybean or alfalfa in Iowa.

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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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/.