Environment - Air
Laboratory Evaluation and Field Verification of Single Point Monitors (SPMs) for Measuring Aerial Ammonia and Hydrogen Sulfide Associated with Swine Operations
June 30, 2004By Hongwei Xin
Single Point Monitor is a portable, relatively low cost instrument that can detect relatively low levels of gaseous ammonia and hydrogen sulfide. It is an approved method for measurement of ambient...
Environment - Water Usage / Conservation
Fecal-contaminant indicators in soils and water of a watershed producing swine and other livestock
June 17, 2004By Mark Tomer
This study reports on the presence of the bacterium E. coli in agricultural watersheds, which indicates fecal pollution. We examined its survival in soil and its transport in tile drainage and...
Environment - Water Usage / Conservation
Nutrient and Pathogen losses to Tile Lines as Influenced by Source of N
June 15, 2004By Gyles Randall
Land application of swine manure on tile-drained soils has become a controversial issue in some swine producing areas because of uncertainties regarding the leaching of nitrates, phosphorus, and...
Environment - Air
Evaluation of the ammonia emissions from swine production units in Iowa
April 1, 2004By Jerry Hatfield|R. L. Pfeiffer
Ammonia concentrations in the air adjacent to and downwind of swine production units are of concern to producers. Most of the existing measurements have been conducted with single point monitors or...
Environment - Air
Characterization of VOCs and particulates from swine finishing facilities
January 24, 2004By Wendy Powers
Air samples were collected or analyzed onsite from finishing, nursery and breeding and gestation operations twice weekly for a 10-wk period during each of two summers. Samples were analyzed for odor,...
Environment - Manure Storage / Application
Establishing Effects of application of Swine Manure on Crop Leaf Damage to Growing Crops
January 12, 2004By Charles Shapiro
The use of irrigation systems to apply swine effluent and liquids from storage and holding ponds is a popular application method due to the labor savings, large volumes of liquid, and when applied...
Environment - Air
Direct Measurement of Dietary and Management Strategy Impacts on Ammonia Volatilization
December 22, 2003By Brian Kerr|Diane Panetta|Hongwei Xin|Jeffery Lorimor|Wendy Powers
A study conducted at Iowa State University, by university scientists and researchers from the USAD-ARS Swine Odor and Manure Management Unit evaluated the independent effects of diet and...
Environment - Manure Storage / Application
Evaluation of Emerging Technologies in Swine Manure Management
October 22, 2003By Samuel K. Baidoo
Our findings in the project indicates that in a wean to finish system: Antibiotics may not be necessary for performance of pigs in a wean to finish system. Antibiotics modifies the micro-flora of the...
Environment - Manure Storage / Application
Field-scale evaluation of the value of manure on soil quality and crop production
October 10, 2003By J.L. Hatfield
Manure is a valuable source of nutrients and organic material for the soil. The observations that have been conducted across several studies have been completed in research plots. A study using...
Environment - Air
Ammonia, Nitrous Oxide and Methane Emmisions from Deep Bedded Hoop Structures
July 28, 2003By Thomas Richard
Swine hoop structures are an alternative housing system where the pigs are raised on a bedded manure pack. This bedded pack begins a natural composting process inside the building, providing...
