Nutrient Management

Irrigation in corn near a cattle feedlot with cattle
Irrigating diluted animal manures on growing crops can work if you ask the right questions. (Photo by Larry Howard)

Can I Irrigate Animal Manures On Growing Crops? June 27, 2018

Recent heavy rains have many feedlot holding ponds full and operators looking for irrigation options to apply animal manure during the growing season. Here are some considerations for applying diluted animal manures without damaging the crop.

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Wheat field exhibiting symptoms of sulfur deficiency.
Figure 1. Areas of yellow wheat on slopes in a field in Nuckolls County on April 27, 2010, typical of sulfur deficiency.

Addendum to May 11 Wheat Disease Update May 14, 2018

To differentiate sulfur deficiency from nitrogen deficiency in wheat, look for field patterns. Symptoms of yellowing limited to certain areas is more typical of sulfur deficiency. In addition, symptoms of sulfur deficiency are more conspicuous when soil temperatures are cold as in early spring.

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What’s New with K Fertilizer Use? April 5, 2018

Three studies with a total of 50 trials applying K at various rates to corn verified that the likelihood of a profitable response is very low if the soil test level is above 125 ppm.

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Nutrient Management for Organic Production April 5, 2018

The NebGuide, Nutrient Management in Organic Farming, features information also of value to conventional production, including manure management, composting, non-traditional products, and crop rotation suggestions.

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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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Manure being injected in wheat residue
Figure 1. Manure injected in wheat residue can be a valuable source of phosphorus.

Is Manure a Fertility Option for Wheat? July 18, 2017

Interested in applying manure to wheat to meet phosphorus and nitrogen needs? This article outlines factors to consider and recommendations for manure and soil sampling, application method, and timing of application to get the highest return from your manure.

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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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