Confined Animal Production and Manure Nutrients
Noel Gollehon, Margriet Caswell, Marc Ribaudo, Robert Kellogg, Charles Lander, and David Letson
Agriculture Information Bulletin No. (AIB771) 40 pp,
Census of agriculture data were used to estimate manure nutrient production and the capacity of cropland and pastureland to assimilate nutrients. Most farms (78 percent for nitrogen and 69 percent for phosphorus) have adequate land on which it is physically feasible to apply the manure produced onfarm at agronomic rates. (The costs of applying manure at these rates have not been assessed). Even so, manure that is produced on operations that cannot fully apply it to their own land at agronomic rates accounts for 60 percent of the Nationís manure nitrogen and 70 percent of the manure phosphorus. In these cases, most counties with farms that produce ""excess"" nutrients have adequate crop acres not associated with animal operations, but within the county, on which it is feasible to spread the manure at
agronomic rates. However, barriers to moving manure to other farms need to be studied. About 20 percent of the Nationís onfarm excess manure nitrogen is produced in counties that have insufficient cropland for its application at agronomic rates (23 percent for phosphorus). For areas without adequate land, alternatives to local land application--such as energy production--will need to be developed.
Keywords: Manure, nutrients, manure nutrients, animal waste, confined livestock, confined animal feeding operation, CAFO, feedlot beef, dairy cows, swine, poultry, animal unit, manure nitrogen, manure phosphorus, water quality
In this report ...
in Adobe Acrobat PDF format.
- Abstract, 11 kb
- Contents, 11 kb
- Executive Summary, 14 kb
- Introduction, 14 kb
- Nutrient Impacts on Water Quality Gain Public Policy Attention, 30 kb
- Data and Methodology, 21 kb
- Livestock Sector on the Move, 479 kb
- Landís Capacity To Use Manure Nutrients, 1,353 kb
- Most Counties Can Absorb Excess Nutrients of Individual Farms, 556 kb
- Conclusions, 14 kb
- References, 19 kb
- Appendix, 11 kb
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Updated date: June 15, 2001