Brian Krienke - Soils Extension Educator

Brian Krienke

@krienke_unlsoil

Price adjustment graph for N in corn

Nutrient Management Suggestions for Corn Updated in EC117

July 9, 2019
The Nebraska Extension Circular, Nutrient Management Suggestions for Corn (EC117), has been updated to account for residual soil nitrate-N and provide an alternative for determining fertilizer-P rates.

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Spring fertilizer application

More on Nutrient Management for 2019

April 11, 2019
This article addresses nitrogen application options for corn and availability of P and K from land-applied grain and fodder damaged by flooding. It supplements the previous article, Nutrient Management Issues for 2019.

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Graph showing hypothetical illustration of variability of N loss.

Overall Efficiency of Fertilizer Nitrogen Use for Corn Production in Nebraska

April 3, 2019
How well are we managing N fertilizer in corn and where can we improve to increase economic and environmental benefits.This article looks at sources of N fertilizer losses, input efficiencies and other factors.

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Nebraska map showing departure from normal precipitation in inches for the last 6 months (9/25/2018 through 3/24/2019, generated on 3/25/2019 at HPRCC)

Topdressing Winter Wheat with Fertilizer Nitrogen

March 26, 2019
Spring topdressing winter wheat with fertilizer N is an effective way to enhance winter wheat production and profitability. Check soil moisture and fertilizer and wheat prices to help determine N needs.

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Routes of nitrogen loss in the soil

Nitrogen Inhibitors for Improved Fertilizer Use Efficiency

January 14, 2019
This article looks at how some nitrogen inhibitors temporarily reduce populations of Nitrosomonas and Nitrobacter bacteria, the soil bacteria responsible for converting ammonium to nitrite and nitrite to nitrate as well as what to look for in product claims.

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Fertilizer Recommendations for Soybean Updated

January 10, 2019
The most substantial revisions to NebGuide 859 are in the sections addressing fertilizer nitrogen and iron.

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Chart of nitro use efficiency and partial profits

Profit and Nitrogen Use Efficiency Gain Using Sensor-Guided Fertigation

January 9, 2019
A UNL study of sensor-based and model-informed fertigation treatments confirms that sensor fertigation treatments are consistently the most profitable and efficient methods of applying N compared to current best management practices (BMPs).

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Chart of grain yield (averages for 15 site-years) with five P application practices.

Fertilizer P for Corn: Update of Research Findings and Revised Recommendations

January 9, 2019
Results of research conducted since 2000 to address fertilizer phosphorus (P) for corn will be reviewed. The current fertilizer P recommendations for corn will be discussed and revised recommendations presented at the 2019 Crop Production Clinics.

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