Comparative investigation of sequentially extracted phosphorus fractions in a sandy loam soil and a swine manure
January 1, 2003By Z. He
Sequential fractionation is one of the most common methods used to investigate phosphorus (P) forms in soils. The strategy can be used for evaluating bioavailability of soil P and for investigating...
Transformations of soil and manure phosphorus after surface application of manure to field plots
January 1, 2003By P. A. Vadas (&) USDA-ARS|U.S. Dairy Forage Research Center
Transfer of phosphorus (P) from surface-applied manures to runoff is an important source of pollution, but few studies have closely monitored P dynamics in manure, soil, and runoff through time. We...
Comparing ammonium ion dissociation constant in swine anaerobic lagoon liquid and deionized water
January 1, 2003By Jactone Arogo
The dissociation constant of ammonium ion both in deionized water and swine anaerobic lagoon liquid was determined experimentally in a convective emission chamber at three temperatures (15 degrees...
Water quality improvements of wastewater from confined animal feeding operations after advanced treatment
January 1, 2003By Vanotti MB
Current trends of animal production concentration and new regulations promote the need for environmentally safe alternatives to land application of liquid manure. These technologies must be able to...
Quantitation of estrogens in ground water and swine lagoon samples using solid-phase extraction, pentafluorobenzyl/trimethylsilyl derivatizations and gas chromatography-negative ion chemical ionization tandem mass spectrometry
January 1, 2003By Dennis D. Fine
A method was developed for the confirmed identification and quantitation of 17(beta)-estradiol, estrone, 17(alpha)-ethynylestradiol and 16(alpha)-hydroxy-17(beta)-estradiol (estriol) in ground water...
Energy requirements for transport and surface application of liquid pig manure in Manitoba, Canada
January 1, 2003By Canada R3T 2N2|M.J. Wiens Department of Plant Science|Manitoba|University of Manitoba|Winnipeg
The objective of this study was to conduct a thorough accounting of energy used to transport liquid pig manure from farm storage to the field and to surface-apply the manure. Energy consumption was...
Solids, organic load and nutrient concentration reductions in swine waste slurry using a polyacrylamide (PAM)-aided solids flocculation treatment
January 1, 2003
Increased swine production results in concentration of wastes generated within a limited geographical area, which may lead to land application rates exceeding the local or regional assimilatory...
Simulated N management effects on corn yield and tile-drainage nitrate loss
January 1, 2003
Thoroughly tested simulation models are needed to help quantify the long-term effects of agriculture. We evaluated the Root Zone Water Quality Model (RZWQM) response to different N management...
Extractable Phosphorus Following Soil Amendment With Manure From Swine Fed Low-Phytate Corn
January 1, 2003By H. T. Gollany
Manure application rate recommendations have been based almost exclusively on nitrogen (N) management considerations, which can result in over-application of phosphorus (P) and its accumulation in...
An assessment of odour emissions from land applied swine manure
January 1, 2003
Land application of manure generates more odour complaints than any other stage in livestock production. Livestock odours have been found to be complex and challenging to accurately measure in field...
