Nitrogen

fertilizer applicator in the field
Figure 1. Fertilizer is one of a farmer's largest inputs and also the one that often varies the most in price from year to year. (Photo by Bob Klein)

Fertilizer Price Changes from 1994-2017 April 25, 2017

Fertilizer, one of the major costs in crop production, changes more in price each year than many other input costs. This articles addresses how farmers can reduce their fertilizer costs by selecting the most economical source for the fertilizer they need.

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Well nodulated soybean roots

Making Data-Driven Decisions on Soybean Inoculation April 6, 2017

Farmers, agronomists, and researchers provide three steps to deciding whether to inoculate soybeans this spring.

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KU researchers conducting water tests in the field

Kansas University Research: ‘Weather Whiplash’ Triggered by Changing Climate will Degrade Midwest’s Drinking Water April 3, 2017

One consequence of global climate change is the likelihood of more extreme seesawing between drought and flood, a phenomenon dubbed “weather whiplash.” In a peer-reviewed study researchers at the University of Kansas discuss how weather whiplash in the American Midwest's agricultural regions may after water quality, forcing municipalities to seek costly remedies to provide safe drinking water to residents.

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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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