Soil Management to Optimize Crop Production in Nebraska

Soil Sampling

Soil sampling is needed to determine soil nutrient needs and optimize fertilizer use and to assess soil variability across the field. See these guides for further information:

Nebraska Fertilizer Nitrogen Recommendations

pale corn plant

Nutrient Deficiencies

Plant symptoms can be used to differentiate and identify crop nutrient disorders. Symptoms of nutrient deficiency vary with variety, growing conditions, and plant age. Similar symptoms may be caused by other abiotic or biotic stresses. Use these symptom keys to help identify nutrient disorders observed in Nebraska corn and sorghum, soybean, or wheat and small grains.

For more information on these and related topics, see the UNL Extension publication, Nutrient Management for Agronomic Crops in Nebraska, EC155, available online, or in soft cover through your local Extension office.

Soil Management Software

Related Articles

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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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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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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Figure 1. Final soybean stand count was not necessarily an indicator of yield in this 2017 study of the effects of late-season (R3) nitrogen application in soybean. The Lincoln County plot (left) had a final stand count of 72,000 plants per acre and yielded 72.7-73 bu/ac. The Perkins County plot (right) had a final stand count of 161,000 plants per acre and yielded 74.4-77 bu/ac.

Is Late Season N Fertilization Warranted for Irrigated Soybean in Western Nebraska? November 2, 2018

On-farm research trials were conducted in three southwest Nebraska counties to study whether a late season N application during the pod setting and seed filling phases would increase soybean yields.

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Odor plumes from land application of manure
Odor plumes from land application of manure

Timing Manure Application to Avoid Neighbor Nuisances August 14, 2018

Roughly half of all neighbor complaints of livestock odors originate from land application of manure. This article outlines the weather conditions to consider when planning a manure application.

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