Chapter 5: Quantifying Greenhouse Gas Sources and Sinks in Animal Production Systems. In Quantifying
This chapter provides guidance for reporting greenhouse gas (GHG) emissions associated with entity‐level fluxes from animal production systems
Powers W, Auvermann B, Cole A, Gooch C, et al.
U.S. Department of Agriculture 2014 Chapter
Potential use of milk urea nitrogen to abate atmospheric nitrogen emissions from Wisconsin dairy far
This study evaluates how associative changes in dietary crude protein, milk urea nitrogen, and urinary urea nitrogen affect atmospheric nitrogen emissions from dairy farms while discussing challenges and opportunities
Powell JM, Rotz CA, and Wattiaux MA
Journal of Environmental Quality 2014 Journal Article
Gas emissions from dairy barnyards
This study determines impacts of surfaces materials and dairy cattle corralling on gas flux from constructed barnyards
Powell JM and Vadas PA
Animal Production Science 2016 Journal Article
Data: Carbon Dioxide, Methane, Nitrous Oxide, Ammonia Emissions from Digested and Separated Manure
Holly M, Larson RA, Powell JM, Ruark MD, et al.
Ag Data Commons 2016 Popular Media
Potential for Reducing On-Farm Greenhouse Gas and Ammonia Emissions from Dairy Cows with Prolonged
This study explores the effects of long-term condensed tannin (Quebracho and chestnut extracts) addition to dairy cow diets on enteric methane, nitrous oxide, and ammonia emissions from manure.
Duval BD, Aguerre M, Wattiaux M, Vadas PA, et al.
Water, Air, & Soil Pollution 2016 Journal Article
Data: Manure application methods for alfalfa-grass
Sherman, Jessica; Jokela, William; Barford, Carol. 2017.
Ag Data Commons 2017 Popular Media
Greenhouse Gas and Ammonia Emissions from Dairy Manure Management Systems
Describes manure storage, processing, and land application strategies that may decrease dairy farm greenhouse gas emissions.
Sustainable Dairy 2017 Fact Sheet
From waste-to-worth: energy, emissions, and nutrient implications of manure processing pathways
Four manure processing pathways are evaluated to provide a system-level understanding of their impacts on different sustainability indicators. In particular we look at how solid-liquid separation, anaerobic digestion, and AD+SLS affect depletion of fossil fuels, nutrient balances, global warming potential, and ammonia emissions when compared to the base-case pathway of direct land application.
Aguirre-Villegas, et. al.
SCI 2014 Publication
The N Cycle Module 1. The N cycle
Presents the N cycle in an interactive way and the major conversion processes: fixation, mineralization, nitrification, denitrification, ammonia volatilization, and immobilization. Also presents nitrate leaching and crop uptake
Cornell Extension USA / NY Fact Sheet
Nitrogen, ammonia emissions and the dairy cow
Explains how nitrogen fed to cows contributes to ammonia emissions and explores feeding strategies to reduce excess nitrogen in the diet.
Penn State Fact Sheet
Ammonia emissions in dairy farms and fields Abating ammonia emissions from dairy barns and fields
Presents strategies to reduce ammonia emissions in manure and from the soil after manure application
USDA / UW Madison USA / WI Fact Sheet
MUN can track ammonia emissions on dairy farms Easy does it with manure on alfalfa and grass
Explains how MUN can be use to measure the extend of ammonia emissions that escape into the environment in dairy production facilities
USDA / UW Madison USA / WI 2011 Fact Sheet