Nitrogen

Nebraska Soybean N Trials
Figure 1. Photos of one site of the Nebraska Extension Soybean Management Field Day research (2013) that compared the effects of several nitrogen treatments on soybeans. Pictured is the zero N control on the left and the 400 lbs/ac split N application on the right. Averaged over four sites the control yielded 73.4 bu/ac and the 400 lbs N averaged 78.9 bu/ac. (To view the results from this study, see https://go.unl.edu/smfdresults2013, pages 1-6.)

Nitrogen on Soybeans — the Hope Never Dies November 6, 2017

Nebraska Soil Scientist Charles Shapiro offers a synopsis of two new publications, both with University of Nebraska authors, that address the question of the nitrogen deficit between soil supply and nitrogen fixation and what affects whether increased nitrogen leads to increased yield.

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Nebraska soil temperature map
Maps of one-day and the weekly average soil temperatures are updated daily by Nebraska Mesonet and featured in the CropWatch Weather section.

Minnesota Research on Nitrogen Inhibitors October 20, 2017

Minnesota research examines the use of inhibitors with fall nitrogen applications. Access Nebraska soil temperatures, provided by Nebraska Mesonet, online in CropWatch.

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Figure 1. Data collected by the multispectral sensor on this drone will be used to direct in-season nitrogen fertilizer applications, part of a producer research project funded by the North Central Region Sustainable Agriculture Research and Education program. (Photos by Laura Thompson)
Figure 1. Data collected by the multispectral sensor on this drone will be used to direct in-season nitrogen fertilizer applications, part of a producer research project funded by the North Central Region Sustainable Agriculture Research and Education program. (Photos by Laura Thompson)

SARE Grant Aids Farmer in Using Drones to Test N Applications October 2, 2017

Dean Stevens well knows the value of getting a bird’s-eye view of his crops to assess plant health, wind damage, and pest threats. Now, with the support of an NCR SARE grant, this southeast Nebraska farmer is using a drone outfitted with crop sensors to assess corn nitrogen needs and respond with variable rate in-season applications.

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N losses

Managing Nitrogen to Reduce Losses as Nitrous Oxide September 18, 2017

Nitrogen is a key factor in farm management and economics. One of the most expensive inputs for corn production, it can be easily lost to the environment. One avenue for losing N, as nitrous oxide, has an impact on our climate as a greenhouse gas. Successful strategies for reducing N losses, especially as nitrous oxide, benefit both farmers and the environment.

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Market Journal title

Market Journal on Nitrate Leaching, Marestail Control and More June 9, 2017

On this week's Market Journal with host Jeff Wilkerson view these segments:

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Cover of the new ISU Publication,

Iowa Releases New Publication on Use of the Late Spring Soil Nitrate Test June 8, 2017

Following heavy spring rains, farmers may be interested in testing for soil nitrogen availability. This article notes a new publication from Iowa State University on using the Late Spring Soil Nitrate Test (LSNT) as well as other options for assessing soil nitrate.

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Chart of potential for nitrate-N leaching in spring 2017

Risk of Nitrate Leaching Across Nebraska as of May 21, 2017 May 25, 2017

Following heavy spring rains UNL soil scientists model potential loss of nitrate-N to soil leaching, finding an average 14% loss from mid-April levels, with three sites with much higher losses.

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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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