Nitrogen Fertilizer

Farmers examine crops in field day
Farmers examining different fertility treatments during 2019 August Field Day near Grant, Nebraska.

Soybean Fertility Study in Western Nebraska: What is Limiting High Yield and Protein?

April 22, 2021
Results of a study on soybean fertility throughout 2019 and 2020 and updated fertilizer recommendations for growers.

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Tractor in field
Anticipated high residual soil nitrate-N levels in Nebraska rainfed crops of dry 2020 may allow reduced N rates for 2021.

Q&As on Nitrogen Investment in Corn This Year

March 31, 2021
Most of Nebraska was drier than normal in 2020, which means a potential increase of residual nitrate-N. As such, producers may need to reduce fertilizer-N rates for 2021 — but how much is enough?

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Soil in field
Figure 1. Ammonia loss can be significant where the surface applied urea is not timely incorporated.

Interested in Testing Nitrogen Stabilizers on Your Farm?

January 19, 2021
Nutrient Management Specialist Javed Iqbal analyzes the use of fertilizer stabilizers to mitigate nitrogen fertilizer loss and increase productivity.

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Plowing a field
Anticipated high residual soil nitrate-N levels in NE rainfed crops of dry 2020 can be credited to reduce N rates for 2021

Planning 2021 Fertilizer-N Application Following a Dry 2020

October 6, 2020
Fertilizer-N is a big investment for crop production in Nebraska and elsewhere. After harvest, growers tend to plan their fertilizer-N management for the next year’s crop. But the question is how much nitrogen can they apply to get the most profit from their fertilizer-N investment?

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corn seedling with damage

Fertilizer-nitrogen Injury

May 22, 2020
Nitrogen (N) is the most limiting nutrient in corn. However, there is risk of crop injury with band application of fertilizer-N.

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nitrogen fertilizer being applied to corn
Photo by Richard Ferguson

Tips for In-season Nitrogen Management in Corn

April 29, 2020
This spring conditions are good for pre-plant fertilizer, but there are still considerations that justify shifting more nitrogen application to in-season versus pre-plant.

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Graph of potential N loss

Considerations for Fall Fertilizer-Nitrogen Application

October 30, 2019
Fall fertilizer applications offer cost savings and time management benefits, but also may contribute to increased soil nitrate-N leaching. With Nebraska's high soil moisture levels, consider these suggestions when applying nitrogen this fall.

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The Science Behind 50-degree Soil and Nitrogen Application

October 8, 2019
From Water.unl.edu: When applying anhydrous or an ammonia-rich manure, wait until soils start to cool. Soil temperature affects how quickly soil microbes will process ammonium nitrogen to nitrate.

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