Soil Fertility

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.

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.

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.

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.

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.

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.

Corn leaves showing signs of nitrogen deficiency — Figure 1. Corn at V10 growth stage displaying symptoms of N deficiency (inverted V-shaped yellowing starting at the tip of lower leaves). Corn can display these symptoms when N supply is insufficient, possibly due to multiple reasons, including losses.

Nitrogen Fertilizer Stabilizers in Corn April 19, 2018

Understanding how the three types of nitrogen stabilizers work can be helpful in deciding whether to add one to your spring application. Short- and long-term studies in Nebraska offer insight into how they performed across multiple years. Now, if you only knew how many inches of rain you'd get the first six weeks after application.

Figure 1. Nebraska soybean field with patches of iron chlorosis caused by a deficiency of iron. (Photo by Rodrigo Werle)

What's New with Micronutrients? April 10, 2018

Micronutrients are in the spotlight these days with new biological products coming to market. This update looks at micronutrient research updates, including which nutrients are likely to enhance profit and how results can differ among different soil tests.

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