Environment - Air
Hydrogen sulphide emission from two large pig-finishing buildings with long-term high-frequency measurements
January 1, 1997
Hydrogen sulfide (H2S) is a common toxic air pollutant and is emitted from decomposing manure at animal facilities. However, there have been only a few studies of H2S emissions from animal buildings,...
Odor removal using biomass filters
January 1, 1997By Steve Hoff
An experimental biomass filter system was built by attaching a full-scale testing chamber to an existing 4-room swine nursery facility to investigate various biomass filters. Four independent biomass...
Determination of odor-annoyance-free setback distances from animal production sites: Part I. Review and experiment
January 1, 1997
The objective of the study was to develop a science-based model, OFFSET (Odor from Feedlot - Setback Estimation Tool), to establish setback distances from animal production sites based on the use of...
Composting hog manure/sawdust mixtures using intermittent and continuous aeration: ammonia emissions
January 1, 1997
Odorous emissions from manures have become a significant problem. Preliminary work on composting hog manure with sawdust had indicated that intermittent aeration could reduce ammonia emissions during...
Nitrogen cycling through swine production systems: ammonia, dinitrogen, and nitrous oxide emissions
January 1, 1997By Lowry A. Harper
Ammonia (NH3) emissions from animal systems have become a primary concern for all of livestock production. The purpose of this research was to establish the relationship of nitrogen (N) emissions to...
Manure-Phosphorus in Soil: Detection and Mobility of Phytate
January 1, 1996
Annual swine effluent application in western Oklahoma for 11 consecutive years did not lead to significant accumulation of soil phosphorus. Similar trend was shown in a century-old field experiment...
Agronomic and environmental soil phosphorus testing in soils receiving liquid swine manure
January 1, 1996
There is uncertainty concerning evaluation of bioavailable P in manured soils. This study assessed P availability in manured Iowa soils by measuring soil P with agronomic and environmental P tests...
Groundwater nitrate depletion in a swine lagoon effluent-irrigated pasture and adjacent riparian zone
January 1, 1996By A. J. Sloan
Irrigation of anaerobic swine lagoon effluent onto cattle-grazed grass pastures represents a common waste treatment method in the Coastal Plain of North Carolina. However, such treatment strategies...
Soil chemical changes following manure application on irrigated alfalfa and rainfed timothy in southern Alberta
January 1, 1996
In areas within Alberta where suitable cultivated land is not available, or for convenience, the use of forage land is an alternative for manure application. However, there is limited research on the...
Effect of rate, frequency and method of liquid swine manure application on soil nitrogen availability, crop performance and N use efficiency in east-central Saskatchewan
January 1, 1996By J. J. Schoenau
A study was initiated in the fall of 1996 in the Black soil zone in east-central Saskatchewan (parkland region) to examine the soil and crop response to application of liquid swine manure at...
Environment - Manure Storage / Application
Manure incorporation equipment effects on odor, residue cover, and crop yield
January 1, 1996By H. M. Hanna
Field experiments in undisturbed (no-till) soyabean and maize residue were conducted to evaluate six liquid swine manure application/incorporation methods. The methods were injection with a...
Nitrification options for pig wastewater treatment
January 1, 1996By A. A. Szogi
Nitrification is a necessary and often limiting process in animal waste treatment for removal of nitrogen as N-2 through biological nitrification/denitrification systems. We evaluated three...
