Results 81 to 90 of about 2,114 (137)

Liquid Swine Manure Application Variability: Challenges and Opportunities

Journal of the ASABE, 2022
HighlightsVariability of manure N content on the day of application was a major contributor to plot-to-plot N rate variability.Using the average of previous years’ manure samples is a valid strategy to improve the accuracy of P application.Estimated economic losses from missing target manure N rates averaged $34.27 ha-1 year-1 ($13.87 ac-1 year-1 ...
Dougherty, Brian W., Andersen, Daniel, Helmers, Matthew   +2 more
openaire   +2 more sources

CHALLENGES OF MANAGING LIQUID SWINE MANURE

Applied Engineering in Agriculture, 2004
Liquid swine manure can be a resource for providing essential plant nutrients and building soil resources, but its management for maximum productivity with minimum environmental impact is often very difficult. Failure to understand the challenges may result in expectations or even regulations that are impossible to achieve.
Karlen, Douglas, Cambardella, Cynthia, Kanwar, Rameshwar   +2 more
openaire   +2 more sources

Soil-Based Treatment of Partially Treated Liquid Swine Manure

Environmental Technology, 2007
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 and 600 mm of local subsoil) soil columns continuously for an eight-week period, and leachate as well as soil samples were analysed.
H, Yang, J, Xiao, M Gamal, El-Din, I D, Buchanan, D, Bromley, K, Ikehata   +5 more
openaire   +2 more sources

Surface application of liquid swine manure: Chemical variability

Communications in Soil Science and Plant Analysis, 1995
Abstract The determination of manure loading rates for crop production is complicated by the temporal variability in manure nutrient concentrations and the difficulty in obtaining representative samples on which to base application rates. The variation in nutrient concentrations in liquid swine manure obtained from an agitated anaerobic lagoon was ...
J. David O'Dell, Michael E. Essington, Donald D. Howard   +2 more
openaire   +1 more source

Soybean Varietal Response to Liquid Swine Manure Application

Agronomy Journal, 2001
Applying manure to soybean [Glycine max (L.) Merr.] as a routine management practice requires additional information about cultivar‐dependent responses. Our objective was to determine seed yield, dry matter accumulation, N accumulation, and lodging responses for a cross‐section of adapted public and private soybean cultivars when liquid swine (Sus ...
John P. Schmidt, John A. Lamb, Michael A. Schmitt, Gyles W. Randall, James H. Orf, Hero T. Gollany   +5 more
openaire   +1 more source

Advanced treatment of liquid swine manure using physico-chemical treatment

Journal of Hazardous Materials, 2011
In this study, liquid swine manure was treated by physico-chemical treatment, including coagulation, flocculation, and sedimentation followed by an oxidation step as a polishing treatment at a bench-scale level. A superabsorbent polymer (SAP) and a mineral and salt formulation able to generate molecular iodine were used as coagulant and oxidant agents,
Pamela, Chelme-Ayala, Mohamed Gamal, El-Din, Richard, Smith, Kenneth R, Code, Jerry, Leonard   +4 more
openaire   +2 more sources

Biohydrogen production through fermentation using liquid swine manure as substrate

Journal of Environmental Science and Health, Part B, 2007
In this paper, continuous production of hydrogen through fermentation with liquid swine manure as substrate was researched using a semi-continuously fed fermenter (8 L in total volume and 4 L in working volume). The pH and temperature for the fermenter were controlled at 5.3 +/- 0.1 and 35 +/- 1 degrees C, respectively, throughout the experiment. Three
Jun, Zhu, Xiao, Wu, Curtis, Miller, Fei, Yu, Paul, Chen, Roger, Ruan   +5 more
openaire   +2 more sources

EFFICACY OF A LIQUID/SOLID ISOLATION SYSTEM FOR SWINE MANURE

Transactions of the ASAE, 2004
Researchers at Michigan State University (MSU), Institut de Recherche et de Developpement en Agroenvironnement (IRDA) in Quebec, Canada, and Centre de Developpement du Porc du Quebec (CDPQ) in Sainte-Foy, Quebec, Canada, collaborated to determine the efficacy of the liquid/solid isolation swine manure handling system installed at MSU.
null R. D. von Bernuth, null J. D. Hill, null E. Henderson, null S. Godbout, null D. Hamel, null F. Pouliot   +5 more
openaire   +1 more source

Alum Settling and Filtration Treatment of Liquid Swine Manure

Transactions of the ASABE, 2006
A physical/chemical treatment train, which involved preliminary settling for 24 h followed by coagulation/flocculation of supernatant, and filtration, was applied to raw flushed swine manure in bench- and pilot-scale experiments to investigate the effectiveness of the treatment train against the removal of total suspended solids (TSS) and total ...
null P. Singh, null M. Gamal El-Din, null D. Bromley, null K. Ikehata   +3 more
openaire   +1 more source

Ammonia Volatilization from Liquid Swine Manure Applied to Cropland

Journal of Environmental Quality, 1981
AbstractRandomized complete block design field experiments were conducted to determine the effects of rates and methods of liquid swine manure application on volatile NH3‐N losses from cropland. In addition, a greenhouse study was conducted to determine the effect of wind on the rate of NH3‐N volatilization from soil and the accuracy of NH3‐N loss ...
J. D. Hoff, D. W. Nelson, A. L. Sutton
openaire   +1 more source