Zobrazeno 51 - 60
of 103
pro vyhledávání: '"April B. Leytem"'
Publikováno v:
Transactions of the ASABE. 56:763-768
Inverse dispersion models are useful tools for estimating emissions from animal feeding operations, waste storage ponds, and manure application fields. Atmospheric stability is an important input parameter to such models. The objective of this study
Publikováno v:
Advances in Animal Biosciences. 4:37-41
Phosphorus (P) is an essential mineral that needs to be supplied in sufficient quantities for maintenance and growth and milk production in dairy cattle. However, over 60% of the P consumed can be excreted in faeces with a potential to cause environm
Autor:
Rodney T. Venterea, Michel A. Cavigelli, Stephen J. Del Grosso, Dexter B. Watts, Mark A. Liebig, Clifford S. Snyder, April B Leytem, P. E. Fixen, Jean E.T. McLain
Publikováno v:
Frontiers in Ecology and the Environment. 10:537-546
The use of commercial nitrogen (N) fertilizers has led to enormous increases in US agricultural productivity. However, N losses from agricultural systems have resulted in numerous deleterious environmental impacts, including a continuing increase in
Publikováno v:
Applied and Environmental Microbiology. 78:8089-8095
Zoonotic pathogens in land-applied dairy wastewaters are a potential health risk. The occurrence and abundance of 10 pathogens and 3 fecal indicators were determined by quantitative real-time PCR (qPCR) in samples from 30 dairy wastewaters from south
Publikováno v:
Bougouin, A; Leytem, A; Dijkstra, J; Dungan, RS; & Kebreab, E. (2016). Nutritional and environmental effects on ammonia emissions from dairy cattle housing: A meta-analysis. Journal of Environmental Quality, 45(4), 1123-1132. doi: 10.2134/jeq2015.07.0389. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/6p4980xj
Journal of Environmental Quality, 45(4), 1123-1132
Journal of environmental quality, vol 45, iss 4
Journal of Environmental Quality 45 (2016) 4
Journal of Environmental Quality, 45(4), 1123-1132
Journal of environmental quality, vol 45, iss 4
Journal of Environmental Quality 45 (2016) 4
© American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. 5585 Guilford Rd., Madison, WI 53711 USA. All rights reserved. Nitrogen excreted in dairy manure can be potentially transformed and emitted as NH3,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b8b7cb3e0cf83ed9c7fa2e65d2f9032
http://www.escholarship.org/uc/item/6p4980xj
http://www.escholarship.org/uc/item/6p4980xj
Autor:
Robert S. Dungan, April B. Leytem
Publikováno v:
Journal of environmental quality. 44(5)
The presence of purple bacteria in manure storage lagoons is often associated with reduced odors. In this study, our objectives were to determine the occurrence of purple sulfur bacteria (PSB) in seven dairy wastewater lagoons and to identify possibl
Autor:
Steven S. Seefeldt, April B. Leytem
Publikováno v:
Western North American Naturalist. 71:361-373
In summer, bands of sheep are grazed in western North American mountains. At night the sheep are concentrated into bedding areas. In the study area, each bedding area is only utilized by sheep for one night a year for 2 out of 3 years. Vegetation in
Publikováno v:
Journal of Animal Science. 89:3300-3309
Confined animal production systems produce increased bioaerosol concentrations, which are a potential respiratory health risk to individuals on site and downwind. In this longitudinal study, airborne endotoxin and microorganisms were collected during
Publikováno v:
Soil Science. 176:426-434
The expansion of the dairy industry in southern Idaho has lead to increased application of manures to meet crop nutrient demands which can alter the uptake pattern of both macro- and micro-nutrients. A greenhouse study was conducted to determine the
Publikováno v:
Applied Spectroscopy. 65:820-825
The use of multiple calibration sets in partial least squares (PLS) regression was proposed to improve the quantitative determination of NH(3) over wide concentration ranges from open-path Fourier transform infrared (OP/FT-IR) spectra. The spectra we