Operating procedures for use of the late-spring soil test by fertilizer dealers and consultants in Iowa
Date
1993
Authors
Blackmer, Alfred
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Organizational Unit
Leopold Center for Sustainable Agriculture
The Leopold Center is a research and education center on the campus of Iowa State University created to identify and reduce negative environmental and social impacts of farming and develop new ways to farm profitably while conserving natural resources.
Journal Issue
Is Version Of
Versions
Series
Department
Leopold Center for Sustainable Agriculture
Abstract
The late-spring soil test for nitrate has been identified as a promising tool for improving nitrogen (N) management in Iowa. The test works by measuring the amount of nitrate iiv the top one-foot layer of soil when corn plants are 6 to 12 inches tall. Sampling is done as late as possible in the spring, but still early enough to allow sidedress applications of more fertilizer N if needed.