Time Line for Voluntary Action
The intent of the USDA-EPA Unified National Strategy for AFOs is for the owners and operators of all AFOs to develop and implement their CNMP by 2009. Both agencies continue to commit resources to build capacity for CNMP development and implementation. Through accelerated, voluntary incentive-based programs and industry leadership, it is expected that the owners and operators of most AFOs will take action to minimize the risk of pollution from their operations.
Definition of Terms
Animal Feeding Operation (AFO)–A lot or facility where animals have been, are, or will be stabled or confined and fed or maintained for a total of 45 days or more in any 12-month period, and crops, vegetation, forage growth, or post-harvest residues are not sustained in the normal growing season over any portion of the lot or facility.
Comprehensive Nutrient Management Plan (CNMP)–Site-specific plan that considers the source and fate of nutrients on the farm and is designed to minimize potential loss of nutrients to the environment while achieving production and economic goals.
Concentrated Animal Feeding Operation (CAFO)– AFO containing animal numbers above a defined threshold or that has been designated as a CAFO after determining it to be a significant contributor of pollutants to waters of the United States. CAFOs are point sources of pollution and must operate under a National Pollutant Discharge Elimination System permit.
Diversions and grass waterways–Water control structures constructed in a field to reduce flow across a field for soil erosion protection.
Phosphorus Index–A risk assessment tool to estimate the potential for phosphorus movement from a field into a nearby waterbody.
Phytase–Enzyme that when added to rations of non- ruminant animals makes the phosphorus in grains and other feed ingredients more available during digestion.
Pre-sidedress nitrogDoneen test–Test taken when corn is less than 12 inches tall to determine if additional nitrogen fertilizer is needed to reach a yield goal for the crop.