Fertilizer

Laila Puntel

New Soil Scientist/Precision Ag Specialist Joins Agronomy

October 4, 2019
Laila Puntel's focus will be on improving efficiency and profitability of soil nutrient management, particularly through the use of precision ag technologies. She will be conducting research at university centers and one-on-one with growers through on-farm research.

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Chart showing corn yield response to various levels of nitrogen fertilizer

The Difference between Maximum Profit and Maximum Production

September 26, 2019
In this week's Cornhusker Economics Nebraska Extension Agricultural Economist Matt Stockton looks at corn yield response to N and provides an economic analysis of N application rates.

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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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Drone equipped with sensors to read nitrogen levels
Figure 1. Nitrogen sensors can be used in drones, high-clearance rigs, or hand-held devices to determine how much in-season N may be needed following a wet spring. (Photo by Laura Thompson)

In-season Nitrogen Management for Corn in 2019

June 12, 2019
Spring weather has complicated nitrogen management this year, making in-season nitrogen application necessary in many fields. You can estimate N needs with the Late Spring Soil Nitrate Test or by use of crop canopy reflectance sensing, both of which are addressed here.

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Figure showing reductions in nitrification based on temeprature.
Figure 1. Reductions in nitrification over time based on temperature.

Anhydrous Ammonia Conversion

April 18, 2019
The environmental conditions allowing for anhydrous injury in 2018 are different then what we are experiencing this year. This brief looks at factors affecting the conversion from ammonia to usable soil nitrate.

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Figure 1. When making decisions for your farm, check out some of the on-farm research results from 2018 to see what other growers learned.
Figure 1. When making decisions for your farm, check out some of the on-farm research results from 2018 to see what other growers learned.

Extension Releases Results from 2018 Farmer-Conducted Research

April 12, 2019
An online database of results from the Nebraska On-Farm Research Network allows users to search and filter data from over 800 Nebraska on-farm research studies dating back to 1990.

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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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