Nitrogen

Nebraska's James Schnable (left) examines a sorghum plant with Andy Benson in the Greenhouse Innovation Center. Schnable is part of a $3.9 million NSF-funded project that aims to develop crops that more efficiently use fertilizer. (Photo by Craig Chandler, UNL)

Researchers Aim to Reduce Nitrogen Fertilizer Use November 28, 2018

Today’s agricultural researchers are turning to plant genomics to find solutions for growing crops more sustainably with fewer inputs, including nitrogen fertilizer, without sacrificing yield or profit.

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Spring N application in the field
Growers planning for their 2019 N management in corn might consider the potential for increased N efficiency and reduced loss from split applications at planting and up to R3 growth stage rather than a fall application.

Consequences of Fall-Applied N November 9, 2018

A fall nitrogen application has a relatively high loss potential and is considered the riskiest N management practice. Consider breaking tradition and splitting your N applications next year to coincide with when your corn most needs more N.

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Figure 1. Final soybean stand count was not necessarily an indicator of yield in this 2017 study of the effects of late-season (R3) nitrogen application in soybean. The Lincoln County plot (left) had a final stand count of 72,000 plants per acre and yielded 72.7-73 bu/ac. The Perkins County plot (right) had a final stand count of 161,000 plants per acre and yielded 74.4-77 bu/ac.

Is Late Season N Fertilization Warranted for Irrigated Soybean in Western Nebraska? November 2, 2018

On-farm research trials were conducted in three southwest Nebraska counties to study whether a late season N application during the pod setting and seed filling phases would increase soybean yields.

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Figure 1. Drilling cereal rye into corn stubble in Dodge County, October 19, 2018.
Figure 1. Drilling cereal rye into corn stubble in Dodge County, October 19, 2018. (Photo by Katja Koehler-Cole)

It’s Not Too Late to Plant Cereal Rye as a Nitrogen Catch Crop Before Soybean October 24, 2018

In trials conducted at three research stations in eastern, northeastern and south-central Nebraska, researchers investigated rye productivity and its ability to scavenge N when grown as a cover crop between full-season corn and soybeans.

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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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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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