Soil carbon and nitrogen dynamics following application of pig slurry for the 19th consective year. II. Nitrous oxide fluxes and mineral nitrogen
January 1, 1997
Agricultural soils often receive annual applications of manure for long periods. Our objective was to quantify the effects of 19 consecutive years of pig (Sus scrofa) slurry (PS) application to a...
Performance of swine waste lagoons for removing Salmonella and enteric microbial indicators
January 1, 1997By Vincent R. Hill
Swine lagoon liquid may contain numerous pathogens at concentrations that are a risk to human health through on-farm contact or through off-farm exposure, such as may occur if the pathogens are...
Nutrient input and removal trends for agricultural soils in nine geographic regions in Arkansas
January 1, 1997By Nathan A. Slaton
Knowledge of the balance between nutrient inputs and removals is required for identifying regions that possess an excess or deficit of nutrients. This assessment describes the balance between the...
Effect of long-term liquid pig manure application on atrazine mineralization in a soil cultivated with maize
January 1, 1997By P.C. Bigwaneza
Soil samples were collected in plots from a field experiment in maize monoculture receiving 0, 60 and 120 m3 ha-1 liquid pig manure (LPM) for 19 years. Soils were sampled from the 0- to 20-cm layer...
Tracing nitrate transport and environmental impact from intensive swine farming using delta nitrogen-15
January 1, 1997
Natural-abundance delta15N showed that nitrate generated from commercial land application of swine (Sus scrofa domesticus) waste within a North Carolina Coastal Plain catchment was being discharged...
Nitrate movement in shallow ground water from swine-lagoon-effluent spray fields managed under current application regulations
January 1, 1997
Rapid increases in the swine (Sus scrofa domestica) population in the 1990s and associated potential for nitrate N pollution of surface waters led the state of North Carolina to adopt stringent waste...
Bacteria and nutrient transport to tile lines shortly after application of large volumes of liquid swine manure
January 1, 1997
The rapid growth and concentration of the livestock production industry has increased concerns about potential water quality problems from land application of manure. A study was conducted using 14...
Controlling odor and volatile substances in liquid hog manure by amendment
January 1, 1997
Five commercial pit additive products were examined for effectiveness of controlling the release of odorous and volatile compounds from swine manure. pH, volatile fatty acids, total solids, total...
The hindrance in the development of pit additive products for swine manure odor control: a review
January 1, 1997
This paper reviews the literature on the development of pit additive products for swine manure odor control. It addresses the problems currently existing in the areas of both product designing and...
Characterization of volatile organic emissions and wastes from a swine production facility
January 1, 1997
Analytical methods for monitoring the volatile organic compound (VOC) emissions, for defining atmospheric transport coefficients, and for monitoring solution phase chemistry have been developed to...
An on-farm swine waste treatment system for odor control, byproduct recovery and treated wastewater reuse in Hawaii
January 1, 1997
A prototype of a pig waste treatment system for a 240-270 pig operation was investigated for its potential of odour control, byproduct utilization and treated wastewater reuse. The high solid portion...
Dust concentrations and particle size distribution in an enclosed swine nursery
January 1, 1997
Dust levels in a mechanically ventilated swine nursery were measured for 13 sampling days over a six-week period during warm weather conditions. Mean daily room air temperature and relative humidity...
