Nitrogen

Drone equipped with sensors for assessing nitrogen need

July 19 Field Day on Using Drones for Corn Nitrogen Management July 13, 2018

Dean and Deb Stevens of rural Falls City will be hosting a field day Thursday, July 19, to share the results of a North Central Region SARE-funded research project on using drones for corn nitrogen management.

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Corn at pollination

Q&A: Will Fertigation Now Endanger Corn Pollination? July 12, 2018

After heavy rains in some areas created increased potential for nitrogen leaching, one farmer asks whether fertigating now will endanger pollination.

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Flooding and Ponding in Corn June 22, 2018

Ponding or flooding of fields affects corn differently at different stages, depending on duration of flooding and other factors. Growers should assess the potential for nitrogen loss and increase scouting for corn disease in these fields.

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Land-applied manure
Research to validate or adapt canopy sensor-guided in-season N application practices for manured fields was evaluated in two trials.

Adaptation of Canopy Sensor-Guided In-Season Nitrogen Application for Manured Fields May 8, 2018

Land application of organic materials for soil management in Nebraska is important.

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Is Soybean Yield Limited by Nitrogen Supply? May 8, 2018

An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics.

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Chart of N research treatments

Feasibility of Sensor-Based Nitrogen Fertigation Management in Corn May 7, 2018

Averaged across two years, the sensor-based N fertigation treatment consistently resulted in higher profit and nitrogen use efficiency. The use of fertigation offers the unique capability to minimize N losses by reacting to slight N deficiencies in corn by applying N multiple times throughout the season with lower application rates.

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Manure spreader

Manure’s Impact on Yield, Nitrogen, and Carbon May 3, 2018

If manure is applied at rates equal to or less than the nitrogen (N) requirement of a crop, can manure produce environmental benefits over commercial fertilizer? This article summarizes the "Take Home Messages" from a paper summarizing 141 studies relative to the question.

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Corn leaves showing signs of nitrogen deficiency
Figure 1. Corn at V10 growth stage displaying symptoms of N deficiency (inverted V-shaped yellowing starting at the tip of lower leaves). Corn can display these symptoms when N supply is insufficient, possibly due to multiple reasons, including losses.

Nitrogen Fertilizer Stabilizers in Corn April 19, 2018

Understanding how the three types of nitrogen stabilizers work can be helpful in deciding whether to add one to your spring application. Short- and long-term studies in Nebraska offer insight into how they performed across multiple years. Now, if you only knew how many inches of rain you'd get the first six weeks after application.

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