Soil-based treatment of partially treated liquid swine manure
January 1, 2007By H. YANG Department of Civil and Environmental Engineering
A soil-column system was tested for the removal of soluble organics and nutrients from partially treated liquid swine manure. The liquid manure was applied to the 900 mm deep (300 mm of local topsoil...
Empirical analysis and prediction of nitrate loading and crop yield for corn-soybean rotations
January 1, 2007By Malone
Nitrate nitrogen losses through subsurface drainage and crop yield are determined by multiple climatic and management variables. The combined and interactive effects of these variables, however, are...
A novel use of anaerobically digested liquid swine manure to potentially control soybean cyst nematode
January 1, 2007By JUN ZHU
Experiments were carried out in two steps to determine the effect of anaerobically digested swine manure on soybean cyst nematode (SCN) egg control. In the first step, liquid swine manure underwent...
Effect of potassium inhibition on the thermophilic anaerobic digestion of swine waste
January 1, 2007By Chen
The inhibition effects of high potassium concentration on thermophilic anaerobic digestion of swine waste were studied. A continuous stirred tank reactor (CSTR), operated at a hydraulic retention...
Temporal Dynamics and Impact of Manure Storage on Antibiotic Resistance Patterns and Population Structure of Escherichia coli Isolates from a Commercial Swine Farm
January 1, 2007By Edward Topp|Patrick Duriez
Many confined-livestock farms store their wastes for several months prior to use as a fertilizer. Storing manure for extended periods could significantly bias the composition of enteric bacterial...
Using a chemical equilibrium model to predict amendments required to precipitate phosphorus as struvite in liquid swine manure
January 1, 2007By Buchanan
Precipitation of phosphate minerals from liquid swine manure is an established means of
reducing the orthophosphate (OP) concentration. This project investigated the usefulness
of a chemical...
Use of Anaerobically Digested Swine Manure as a Nitrogen Source in Corn Production
January 1, 2007By John E. Sawyer
Swine (Sus scrofa) manure is an important source of N for crop production. The processing of manure in an anaerobic digester for biogas production is only a partial manure treatment process and is...
Soil microbial community composition and structure: residual effects of contrasting N fertilization of swine lagoon effluent versus ammonium nitrate
January 1, 2007By K. Iyyemperumal and W. Shi
Land application of swine lagoon effluent (SLE) often changes soil pH and the concentrations of nutrients and trace metals. We hypothesize that fertilization-associated alteration in soil properties...
Simulating management effects on crop production, tile drainage, and water quality using RZWQM-DSSAT
January 1, 2007By L. Ma USDA-ARS
The objective of this study was to explore if more crop-specific plant growth modules can improve simulations of crop yields, and N in tile flow under different management practices compared with a...
Agronomic effectiveness of calcium phosphate recovered from liquid swine manure
January 1, 2007By Philip J. Bauer USDA-ARS Coastal Plains Soil
A new manure treatment technology developed as an alternative to anaerobic lagoons on swine (Sus scrofa domesticus) farms includes solid-liquid separation and subsequent recovery of soluble P as...
