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...
Phosphorus Losses through Agricultural Tile Drainage in Nova Scotia, Canada
January 1, 2007By R.D. Kinley
Tile drainage water from agricultural fields commonly exceeds environmental guidelines for phosphorus (P) in rivers and streams. The loss of P through artificial drainage is spatially and temporally...
Full-scale sequencing batch reactor system for swine wastewater treatment
January 1, 2007By Dr. Kwang Victor Lo
A full-scale sequencing batch reactor (SBR) system was evaluated for its ability to remove carbon and nitrogen from swine wastewater. The SBR was operated on four, six-hour cycles each day, with each...
Multiple environmental externalities and manure management policy
January 1, 2007
This paper considers the economic and environmental implications of regulation the air nitrogen emissions under single and multi-environmental media policies in the US hog industry. We examine...
Development of a Swine-Specific Fecal Pollution Marker Based on Host Differences in Methanogen mcrA Genes
January 1, 2007By Ufnar
The goal of this study was to evaluate methanogen diversity in animal hosts to develop a swine-specific
archaeal molecular marker for fecal source tracking in surface waters. Phylogenetic analysis of...
The fate of crop nutrients during digestion of swine manure in psychrophilic anaerobic sequencing batch reactors
January 1, 2007By D.I. Masse Dairy and Swine Research and Development Centre
The objectives of the study were to measure the levels of manure nutrients retained in psychrophilic anaerobic sequencing batch reactors (PASBRs) digesting swine manure, and to determine the...
Nitrogen mass balance in fields irrigated with liquid swine waste
January 1, 2007
Over the past 15-years, swine-producing confined animal feeding operations (CAFOs) have proliferated throughout the Southeastern United States, particularly in North Carolina. Waste at these...
Sensitivities of Four Air Dispersion Models to Climatic Parameters for Swine Odor Dispersion
January 1, 2007
Using air dispersion models to predict downwind livestock odor concentrations in order to establish science-based setback distances has the potential to become a common practice for regulatory...
