Soil Fertility

3 Resources on How Animal Manure Can Benefit Your Soils

June 4, 2019
Animal manure can be a valuable soil nutrient. Three stories at Water.unl.edu explore how manure improves soil fertility and productivity, how poultry manure can be managed in crop production, and how composted beef manure can be added to sugar beet production.

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Figure showing the marginal net returns to N fertilizer application for irrigated corn following corn and corn following soybean. The analysis was done for $4/bu corn and fertilizer costs of 7 lb N and 9 lb N equal to value of one bushel of grain or of $0.57/lb N and $0.44/lb N, respectively.

Effects on Profitability and Nitrogen Loss from Reducing N Rate for Corn

February 5, 2019
This study looks at how various reductions in nitrogen application rates in corn might reduce nitrogen loss to the environment and what the costs of those changes would be in yield and profit.

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Cattle grazing a corn field
Cows grazing corn residue may not remove as much organic material and as many nutrients as might be expected, but they will likely redistribute some nutrients in the field due to their traffic patterns.

Nutrient Removal by Cows Grazing Corn Residue

November 5, 2018
Nutrient removal by cows grazing corn residue may not be as much as you might think. Here a livestock and a forage specialist break down the numbers and look at removal rates for organic matter and minerals.

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How do I accurately credit nitrogen from manure?

Estimating Nitrogen Credit from Manure

September 5, 2018
Nitrogen in manure requires some simple planning to insure it's given proper credit for offsetting commercial fertilizer inputs. This Water.unl.edu article offers key information for calculating N credit.

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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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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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Winter wheat field in mid April

Winter Wheat Nitrogen Applications

April 25, 2018
Spring is the ideal time to apply nitrogen (N) to winter wheat to ensure top yields. Adequate N levels promote tillering, large head size, and are the primary factor determining the protein level of the grain at harvest. There are a few things to consider to optimize N applied to wheat.

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Figure 1. Corn plant leaves exhibiting zinc deficiency (left) and iron chlorosis symptoms.

Newly Revised NebGuide: Micronutrient Management in Nebraska

April 24, 2018
A new NebGuide, Micronutrient Management in Nebraska, addresses issues of micronutrient fertilizer use with a focus on zinc and iron; other sections include micronutrient availability in soils, plant sampling, iron chlorosis, and micronutrient toxicities.

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