Surface water quality impacts of tillage practices under liquid swine manure application
January 1, 1992By R. P. Rudra
Field studies were conducted to investigate the effects of tillage practices on the saturated hydraulic conductivity, and quantity and quality of surface runoff water resulting from the application...
Evaluation of overland flow treatment for swine lagoon effluent
January 1, 1992By Gary L. Hawkins
Overland flow, on slopes of 5 and 11%, was used as a means of treating wastewater effluent from the second cell of a swine waste anaerobic lagoon system. Wastewater samples from both surface runoff...
Swine manure and N-management systems: impact on groundwater quality
January 1, 1992By R. S. Kanwar
Field studies were initiated in the fall of 1992, to evaluate the effects of nine alternative nitrogen (N), tillage, and crop management strategies on N loss to the shallow groundwater. The tillage...
Nitrogen distribution in soils of constructed wetlands treating lagoon wastewater
January 1, 1992By Ariel A. Szögi
Constructed wetlands have the potential to be used for treatment of N-rich livestock wastewater. Our objectives were to evaluate both the time effect and increasing N loading rates on soil N...
Performance of four constructed wetlands treating anaerobic swine lagoon effluents
January 1, 1992
Effluents from both cells of a two-cell anaerobic lagoon system beating flushed swine waste were loaded into two types of constructed wetlands [submerged flow (SF) and free water surface (FWS)]. The...
Effects of swine lagoon effluent application on chemical properties of a loamy sand
January 1, 1992By F. Liu
In order to determine the effects of lagoon effluent application on soil chemical properties, swine lagoon effluent was applied to land with a 10% slope by an overland flow irrigation system on...
Effect of swine lagoon water application rate and alfalfa harvest frequency on dry matter production and N harvest
January 1, 1992
Swine (Sus scrofa domesticus) lagoon water can supply valuable fertilizer nutrients for field crops. Reduced land availability and increased swine operation size can potentially create situations...
Field odor measurement and applications of Gaussian plume model
January 1, 1992
Field measurements of odour intensity around a slurry tank and 200-sow swine unit were conducted. Odour intensity from 0 to 3 were defined as none, detectable, strong, and very strong, respectively....
Odor control in liquid hog manure by added amendments and aeration
January 1, 1992
A reduction in the emission of malodorous gases from liquid hog manure (LHM) would represent an advantage for LHM use in agricultural systems. Procedures for the reduction of disagreeable odors...
Using riparian buffers to treat animal waste
January 1, 1991By R. K. Hubbard
None available.
Spring runoff and drainage N and P losses from hog-manured corn
January 1, 1991By G. Gangbazo
A two-year study was conducted to assess the effect of hog manure on the losses of nitrogen and phosphorus in runoff and drainage from grain-corn (Zea mays L.) plots, and the importance of spring...
Treatment of pig slurry using the pump-stirred aerator
January 1, 1991By D. W. Williams
An experimental aeration system, called a pump-stirred aerator (PSA) was tested. The PSA consisted of an 11 kw centrifugal pump circulating liquid to and from a 10 msuperscript 3 tank and injecting...
