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Most of Iowa has not received high precipitation amounts this spring, however, some regions have–most notably western Iowa (see maps). Wet springtime conditions typically raise the question about the status of applied nitrogen (N).| Integrated Crop Management
One method to judge nitrogen (N) loss is to calculate an estimate. Predicting the exact amount is quite difficult as many factors affect losses. However, estimates can provide guidance for supplemental N applications. While the rainfall this spring has been substantial, it arrived early. This should help moderate loss compared to the same situation occurring in late spring or early summer. In the early spring, soils are colder, so conversion to nitrate and denitrification is slowed. However, ...| Integrated Crop Management
High rainfall in some areas the past couple of weeks has produced another wet spring in Iowa. This leads to questions about nitrogen (N) loss and need for supplemental N application to corn. Unfortunately, this question has become almost the norm - I have written approximately 20 articles on the subject since 2007.| Integrated Crop Management
This spring's wet conditions are similar to those in 2011. That year's example could help producers this year avoid nitrate loss in fields that are saturated or have standing water.| Integrated Crop Management
This is part one of a three-part series on nitrogen management this spring. Read part two, “Navigating Nitrogen Management in Wet Spring Conditions – Estimating Nitrogen Losses,” and part three, “Navigating Nitrogen Management in Wet Spring Conditions – Does the corn need more nitrogen?”.| Integrated Crop Management
This is part three of a three-part series on nitrogen management this spring. Read part one “Navigating Nitrogen Management in Wet Spring Conditions – Nitrogen Loss Mechanisms” and part two “Navigating Nitrogen Management in Wet Spring Conditions – Estimating Nitrogen Losses.”| Integrated Crop Management
