Soil properties under nitrogen- vs phosphorus-based manure and compost management of corn

This study evaluates the influence of a change from N-based applications of manure and compost (without incorporation) to P-removal-based management of manure (immediate tillage incorporation) and composted separated dairy solids on soil pH, soil organic matter and soil carbon


Sadeghpour A, Ketterings QM, Vermeylen F, Godwin GS, et al
Soil Science Society of America Journal 2016 Journal Article

Nitrogen use efficiencies to grow, feed, and recycle manure from the major diet components feed

This study quantifies soil N input incorporation into the major diet components fed to dairy cows, diet component N secretions in milk N and excretion in manure N constituents, and manure N recycled back through the feed supply


Powell JM, Barros T, Danes M, Aguerre M, et al.
Agriculture, Ecosystems and Environment 2017 Journal Article

Evaluating GHG and ammonia emissions from digested and separated manure through storage and land app

This study keeps track of GHG and ammonia emissions of raw, separated, and digested dairy manure during storage and land application


Holly MA, Larson RA, Powell M, Ruark M, Aguirre-Villegas HA
Agriculture, Ecosystems & Environment 2017 Journal Article

Nitrogen cycle Soil and applied nitrogen

Present the basics of N fixation, reactions in the soil, N loss mechanisms, sources of N, and environmental effects


Bundy
UW Madison USA / WI 1998 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

Lowered protein diets to reduce nitrogen losses

Presents a description of how low can we go on lowered protein content diets without affecting milk production in order to improve nitrogen efficiency and reduce nitrogen losses from manure.


Penn State 2014 Fact Sheet

Tillage and cover crops Using cover crops to convert to no-till

Presents the benefits of using cover crops to migrate to a no-till system, the nitrogen recycling process that takes place


Hoorman et al.
Ohio State USA / OH 2009 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


Powell
USDA / UW Madison USA / WI 2011 Fact Sheet

N emissions from dairy farms Using MUN to reduce N emissions from dairy farms

Explains how Milk Urea Nitrogen (MUN) can be used to reduce nitrogen emissions from dairy farms. Present a great graphic description of the N cycle in the cow


Powell
USDA / UW Madison USA / WI 2014 Fact Sheet

Diet strategies to reduce amounts of Nitrogen and Phosphorous in dairy rations

Presents strategies to balance rations and group and feed animals according to their nutrient needs.


Virginia Tech 2009 Fact Sheet