Winter Cover Crop and Management Effects on Summer and Annual Nutrient Yields
January 1, 2006By D.E. Rowe|T.E. Fairbrother
Effluent from a swine (Sus scrofa domesticus) lagoon is often applied repeatedly to nearby fields because of logistical constraints and costs of transportation. To minimize accumulation of soil...
Small livestock producers with diffuse water pollutants: adopting a disincentive for unacceptable manure application practices
January 1, 2006By Centner
The problem of water pollution from small livestock producers (non-concentrated animal feeding operations) could be addressed through water quality regulations that apply to additional livestock...
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...
Antimicrobial Use and Resistance in Swine Waste Treatment Systems
January 1, 2006By Julie L. Zilles
Chlortetracycline and the macrolide tylosin were identified as commonly used antimicrobials for growth promotion and prophylaxis in swine production. Resistance to these antimicrobials was measured...
Cover crop effects on the fate of N following soil application of swine manure
January 1, 2006By T.B. Parkin
Cereal grain cover crops increase surface cover, anchor corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] residues, increase infiltration, reduce both rill and interrill erosion, scavenge...
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...
Effect of lime, dicyandiamide and soil water content on ammonia and nitrous oxide emissions following application of liquid hog manure to a marshland soil
January 1, 2006By M. S. Mkhabela
The loss of nitrogen (N) from field-applied animal manure through ammonia (NH3) volatilisation and nitrous oxide (N2O) emission is of major environmental concern. Both lime and dicyandiamide (DCD)...
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...
Ammonia emissions from swine waste lagoons in the Utah Great Basin
January 1, 2006
In animal production systems (poultry, beef, and swine), current production, storage, and disposal techniques present a challenge to manage wastes to minimize the emissions of trace gases within...
Impact of agriculture on water quality in the North Carolina Middle Coastal Plain
January 1, 2006By Michael D. Dukes
Water quality in the Middle Coastal Plain of North Carolina has been impacted by agriculture; however, the water quality impacts in these areas over time have not been studied in detail. The surface...
