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Full-Text Articles in Physical Sciences and Mathematics
Effect Of Long-Term Nutrient Management Strategies For Pastures On Phosphorus In Surface Runoff And Soil Quality, G. L. Mullins, J. P. Fontenot, G. A. Alloush, G. Johnson, D. G. Boyer, V. G. Allen, G. Scaglia
Effect Of Long-Term Nutrient Management Strategies For Pastures On Phosphorus In Surface Runoff And Soil Quality, G. L. Mullins, J. P. Fontenot, G. A. Alloush, G. Johnson, D. G. Boyer, V. G. Allen, G. Scaglia
IGC Proceedings (1997-2023)
Manure, whether mechanically applied or deposited by grazing animals, has been associated with increased risk of non-point source pollution, especially phosphorus. This is especially true in areas where the industry, especially poultry, has been concentrated in geographical areas that are grain deficient, resulting in a reliance on imported grain for poultry feed. Intensification has resulted in the production of large quantities of poultry manure, within relatively small geographical areas. Surplus litter is typically land applied as a nutrient source or used as an animal feed. The objective of this project was to evaluate the effects of long-term nutrient management strategies …
Value Of Nutrients In Poultry Litter When Applied In The Fall, Monroe Rasnake, George Kelley
Value Of Nutrients In Poultry Litter When Applied In The Fall, Monroe Rasnake, George Kelley
Soil Science News and Views
The value of nutrients in poultry litter depends not only on how much nitrogen (N), phosphorus (P) and potassium (K) it contains, but also on how it is handled and applied. The following table compares the value of 19 poultry litter samples from Hopkins County analyzed for N, P & K and the litter then spread in the fall. The samples include pullet, breeder and broiler manures, with storage times up to one year. Nutrient values were based on a comparison with urea (46-0-0) at $199/ton, triple super phosphate (0-46-0) at $215/ton and muriate of potash (0-0-60) at $165/ton.
Performance Of Vegetative Filter Strips With Varying Pollutant Source And Filter Strip Lengths, Puneet Srivastava, Dwayne R. Edwards, Tommy C. Daniel, Philip A. Moore Jr., Thomas A. Costello
Performance Of Vegetative Filter Strips With Varying Pollutant Source And Filter Strip Lengths, Puneet Srivastava, Dwayne R. Edwards, Tommy C. Daniel, Philip A. Moore Jr., Thomas A. Costello
Biosystems and Agricultural Engineering Faculty Publications
Vegetative filter strips (VFS) can reduce runoff losses of pollutants such as nitrogen (N) and phosphorus (P) from land areas treated with fertilizers. While VFS effectiveness is considered to depend on lengths of pollutant source and VFS areas, there is little experimental evidence of this dependence, particularly when the pollutant source is manure-treated pasture. This study assessed the effects of pollutant source area (fescue pasture treated with poultry litter) length and VFS (fescue pasture) length on VFS removal of nitrate N (NO3-N), ammonia N (NH3-N), total Kjeldahl N (TKN), ortho-P (PO4-P), total P (TP), …
Weed Seed In Poultry Litter: Should Farmers Be Concerned, Monroe Rasnake
Weed Seed In Poultry Litter: Should Farmers Be Concerned, Monroe Rasnake
Soil Science News and Views
Over the years, I have received many calls from farmers who have had unusual weed problems in their fields. Their first thoughts normally are that weed seeds were brought to the fields in crop seed, hay, manure, etc. Some of the same concern has been expressed in regard to using poultry litter on fields. As poultry litter becomes available to more Kentucky farmers, should they be concerned about the possibility it would contain weed seed? The simple answer to the question is "NO" in most situations.
Phosphorus Immobilization In Poultry Litter And Litter-Amended Soils With Aluminum, Calcium And Iron Amendments, D. M. Miller, P. A. Moore Jr., T. C. Daniels
Phosphorus Immobilization In Poultry Litter And Litter-Amended Soils With Aluminum, Calcium And Iron Amendments, D. M. Miller, P. A. Moore Jr., T. C. Daniels
Technical Reports
Arkansas produces approximately one billion broilers each year. Phosphorous (P) runoff from fields receiving poultry litter is believed to be one of the primary factors affecting water quality in Northwest Arkansas. Poultry litter contains approximately 20 g P kg-1, of which about 2 g P kg-1 is water soluble. Soils that have received repeated heavy applications of litter may have water soluble P contents of as high as 10 mg P Kg-1 soil. The objective of this study was to determine if soluble P levels could be reduced in poultry litter and litter-amended soils with Al,Ca, and/or Fe amendments. Poultry …
Trapping Fecal Bacteria And Sediment In Surface Runoff From Cropland Treated With Poultry Litter, Mark S. Coyne, R. A. Gilfillen, Robert L. Blevins
Trapping Fecal Bacteria And Sediment In Surface Runoff From Cropland Treated With Poultry Litter, Mark S. Coyne, R. A. Gilfillen, Robert L. Blevins
Soil Science News and Views
Between 1991 and 1994 the broiler population exploded in Kentucky as the poultry industry began to expand. The Kentucky Department of Agriculture predicts that within four years annual broiler production could exceed 275 million birds. This may be good for Kentucky's economy but it carries some important environmental consequences. If expansion continues as anticipated, the estimated waste production from broilers for processing could reach 300,000 tons per year (assuming each broiler house produces 150,000 birds per year and the yearly manure and litter production per house is approximately 160 tons).
Arkansas Soil Fertility Studies 1991, Wayne E. Sabbe
Arkansas Soil Fertility Studies 1991, Wayne E. Sabbe
Arkansas Agricultural Experiment Station Research Series
Contained within this publication are progress reports on the specific aspects of the soil fertility program at the University of Arkansas in 1991. In most instances, the reports are not final reports, but they may contain data from several years. Further details on each report can be obtained from the respective project leaders.
Poultry Litter As A Nitrogen Source For Corn, Monroe Rasnake, Larry Reber
Poultry Litter As A Nitrogen Source For Corn, Monroe Rasnake, Larry Reber
Soil Science News and Views
Development of an intensive poultry production industry in western and south-central Kentucky will make poultry litter available to many farmers. It is estimated that 45, 000 tons per year will be produced just in the Jackson Purchase Area. One of the most efficient uses of this litter is as a nitrogen fertilizer source for corn.
Fate Of Nitrogen From The Disposal Of Poultry Litter: A Simulation Approach, B. A. Ibrahim, H D. Scott
Fate Of Nitrogen From The Disposal Of Poultry Litter: A Simulation Approach, B. A. Ibrahim, H D. Scott
Technical Reports
A computer program was written to simulate the transport of nitrogen after an application of poultry litter to a pasture. The program was written in FORTRAN 77 to run on an IBM PC/AT or compatible personal computer or on a Sun SPARCSTATION. Simulation of water, solute and heat transport was by finite difference. Partition of rainfall into infiltration and runoff was by the SCS curve number method. A comparison was made of the computer model output with the results of a field experiment established at the Main Agricultural Experiment Station at Fayetteville. Poultry litter was applied at a rate of …