Animal Manure Management

Livestock production plays an important role in rural and urban economies worldwide and is a significant source of protein in humans’ diet. However, the growth of the livestock sector can have negative impacts on our natural resources; fresh water consumption, water quality deterioration due to manure nutrient losses to surface water, greenhouse gas emissions, and competition for human-edible grains are all possible consequences of food animal production. To address some of these environmental impacts of livestock production, the sector has been working hard to improve livestock productivity, feed-use efficiency of animals, crop productivity and efficiency of resource utilization in the field, and expanding the sourcing of feeds.

Animal manures can be a valuable asset or a “pain in the assets”. During winter of 2020, 957 farmers and their advisors shared their perspective on the benefits and barriers to manure use. A previous article (part 1) focused on perceptions of manure's benefits. This article (part 2) focuses on their perceptions of manure’s challenges that commonly become barriers to manure use in some fields and discusses strategies for preventing manure from becoming a “pain in the assets”.

Animal manures can be a “valuable asset” or a “pain in the assets”. Understanding the agriculture community's perceptions of manure's benefits and barriers is important to recycling manure nutrients efficienty. A survey of 957 individuals from the U.S. and Canada is helping us understand the next steps to encouraging manure's use as a valuable asset.

The misconception about manure being just a waste and harmful biproduct of the cattle and livestock industry is still a big concern. A group of researchers and extension educators have joined efforts with farmers across Nebraska to find the value of manure as a source of nutrients in crop fields in the Sandhills and reduce the environmental impacts caused by this industry. At the same time, they are trying to incorporate residues from red cedar trees that are currently threatening the Nebraskan wildlife and ecosystems due to its rapid expansion.

Small but mighty, weed seeds in manure can be problematic when they result in overgrown, weedy fields after manure application. Some manures can be a source of these troublesome weed seeds. But, luckily, there are some measures that can be taken to reduce the viability of those weed seeds.

There are several ways seeds of Palmer amaranth can be introduced into your fields. Manure is one of them. This article provides some valuable answers on 1) reducing Palmer amaranth seed in feed, 2) reducing Palmer amaranth seed in manure; and 3) field application of contaminated manure.

Fertilizer-N is a big investment for crop production in Nebraska and elsewhere. After harvest, growers tend to plan their fertilizer-N management for the next year’s crop. But the question is how much nitrogen can they apply to get the most profit from their fertilizer-N investment?

Manure application on frozen or snow-covered soil poses a higher risk of nutrient loss through runoff.

As responsible land stewards, farmers, who follow “good neighbor practices,” may save on commercial fertilizer costs while at the same time protecting groundwater from contamination due to nutrient leaching. Properly stockpiled manure stored on field edges can be a “win-win” for farmers and their rural neighbors through addressing two common concerns: runoff and odors.

Current manure application practices have little to no precision application capabilities compared to other modern agricultural equipment. Due to some recent emerging technologies being released on the market, manure application is finally joining the digital age. This article summarizes these new precision manure application technologies.

Supplemental protein has historically been the most expensive component in beef cattle diets. However, over the past 20 years with the rapid expansion of ethanol production and distillers grains supply, rations have changed.