Effect of swine and dairy manure amendments on microbial communities in three soils as influenced by environmental conditions
January 1, 2006By R. P. Larkin
Understanding the impacts of manure amendments on soil microorganisms can provide valuable insight into nutrient availability and potential crop and environmental effects. Soil microbial community...
Developing an environmental manure test for the phosphorus index
January 1, 2006By Peter J. A. Kleinman
Widespread implementation of the phosphorus (P) index has focused attention on environmental manure tests that can be used to estimate the relative availability of P in manure to runoff water. This...
Treatment of swine manure effluent using freshwater algae: Production, nutrient recovery, and elemental composition of algal biomass at four effluent loading rates
January 1, 2006By Walter W. Mulbry United States Department of Agriculture
Cultivating algae on nitrogen (N) and phosphorus ( P) in animal manure effluents presents an alternative to the current practice of land application. The objective of this study was to determine how...
Modeling sources of gaseous emissions in a pig house with recharge pit
January 1, 2006By Peter Kai
Ammonia, methane, and odor from a fully slatted pig housing facility equipped with a pit-recharge manure system were modeled with a view to quantify the sources of ammonia, methane, and odor...
Review of the use of aerobic thermophilic bioprocesses for the treatment of swine waste
January 1, 2006By Pierre Juteau
For 40 years, aerobic thermophilic (AT) processes have been presented as a possible way of treating liquid manure, especially swine wastes. If they are well designed, bioreactors can be self-heating...
Using stream bioassessment protocols to monitor impacts of a confined swine operation
January 1, 2006
The processing of waste from confined animal feeding operations (CAFOs) presents a major environmental challenge. Treatment of waste and subsequent land application is a common best management...
Source-Related Transport of Phosphorus in Surface Runoff
January 1, 2006By F. Shigaki
Continual application of mineral fertilizer and manures to meet crop production goals has resulted in the buildup of soil P concentrations in many areas. A rainfall simulation study was conducted to...
Disinfection of swine wastewater using chlorine, ultraviolet light and ozone
January 1, 2006By Macauley
Veterinary antibiotics are widely used at concentrated animal feeding operations (CAFOs)
to prevent disease and promote growth of livestock. However, the majority of antibiotics
are excreted from...
Environment - Manure Storage / Application
Free fatty acids and sterols in swine manure
January 1, 2006By Loughrin
Free fatty acids and sterols were assessed in fresh manure and anaerobic lagoon sludge from swine production facilities in North Carolina. Eight free fatty acids and five sterols were identified and...
Soil Nutrient Dynamics from Swine Effluent Application to Common Bermudagrass Overseeded with Cool-Season Annuals
January 1, 2006By K. R. Sistani
A 3-year study was conducted to investigate the major nutrient dynamics in soil receiving swine effluent as the sole source of plant nutrients for warm-season perennial bermudagrass and cool-season...
Effects of cropping systems on NO3-N losses to tile drain
January 1, 2006By Kanwar
ABSTRACT: Diverse cropping systems can have significant impacts on nutrient losses through tile drain systems and to surface water bodies (rivers and streams). Increased transport
of nitrogen to...
Alum Settling and Filtration Treatment of Liquid Swine Manure
January 1, 2006By Mohamed Gamal El-Din
A physical/chemical treatment train, which involved preliminary settling for 24 h followed by coagulation/flocculation of supernatant, and filtration, was applied to raw flushed swine manure in...
