Nitrogen

Cover of Nitrogen Exenders and Additives for Field Crops

Recommended Resource: Nitrogen Extenders and Additives for Field Crops March 9, 2017

A recently revised publication, Nitrogen Extenders and Additives for Field Crops, discusses their attributes, performance, and crop yield response in various trials, and reviews related research findings from land grant universities in the North Central Region.

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Value of manure

Finding Win-Wins for Manure: Maximizing Soil Quality Benefits March 6, 2017

Manure offers crop production wins by providing valuable nutrients and helping build soil organic matter and an active soil microbial community. Soils with organic matter levels on the low end of their typical range can benefit the most from manure applications that do not exceed the crop’s nitrogen requirements. Organic matter also improves soil aggregates which in turn helps increase infiltration of precipitation and irrigation water, improves water-holding capacity of the soil, and reduces runoff and erosion. Soils with these characteristics experience greater drought tolerance.

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fertilizer applicator in the field
Nebraska research shows that most NE growers can reduce their normal nitrogen rate in corn following alfalfa by applying the proper N credit. (Photo by Laura Thompson)

Cutting Costs Without Hurting Yields? Check Fertilizer N Rates in Corn after Alfalfa February 22, 2017

With tight crop margins for the 2017 growing season, many farmers are looking for ways to cut input costs without hurting yields. One way to do this is by giving the appropriate nitrogen credit when calculating how much N to apply to corn grown after a prior alfalfa crop.

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The Long View of Nitrogen Recommendations from Nebraska Extension January 6, 2017

At the 2017 Crop Production Clinics, the Nebraska Extension Soils Team is presenting a historical overview of how nitrogen recommendations for corn have developed and changed since the 1950s. We are also discussing what may lay ahead for nitrogen management.

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cover crops

Is Nitrogen Fixation Oversold with Legume Cover Crops? December 16, 2016

One expected benefit of using legumes as a cover crop is to provide a source of nitrogen (N) to the cropping system. However, when legumes are included in mixtures with grasses and broadleaves for a relatively short growing period, the amount of actual fixed N may be relatively low.

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Nitrate Nitrogen or Nitrate — What's the Difference? October 26, 2016

I just got the nitrate test results back from the lab and the level was 3,000.  Am I in trouble?

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Use Corn Stalk Nitrate Tests to Evaluate N Management September 21, 2016

A late-season corn stalk nitrate test can be a valuable tool in assessing your nitrogen management program.

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Nitrogen cycle
Figure 1. The nitrogen (N) cycle illustrates how complex this nutrient is. There are several ways this essential nutrient for corn production can be lost. (Source: Nebraska Extension guide, Nutrient Management for Agronomic Crops, EC155)

Q&As: How much N is Left? Do I Need More Starter When Replanting? May 27, 2016

Well, it seems not much has changed since the last article I wrote on nitrogen (N) management a few weeks back: more rain, more to come, and more uncertainty with regard to N. So, what do we do now and why I am not worried about the other nutrients? Why is it always about N?

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