Animal Manure Management
- Regulations
The need for advanced
science and technology in animal waste management continues as social and
regulatory pressures for safe food and clean environment increase.
The regulatory climate around animal production has changed drastically
in the past five years. A great deal of activity has occurred at the state
and local levels on regulations and/or restrictions to control livestock
and poultry production facilities, as well as the management of waste materials
from those facilities. Following the announcement of the Clean Water Action
Plan (CWAP) by President Clinton and Vice President Gore in February of
1998, EPA and USDA jointly developed and published Unified National Animal
Feeding Operation (AFO) Strategy in March of 1999. The Strategy calls for
AFO owners and operators to take actions to minimize water pollution from
confinement animal facilities and the land application of manure. To accomplish
this goal, the Strategy established a national performance expectation
that all AFOs should develop and implement technically sound, economically
feasible, and site-specific comprehensive nutrient management plans (CNMPs)
to minimize impacts on water quality and public health. Coordinated research,
technical innovation, and technology transfer and increased data coordination
are among the seven strategic issues that should be addressed to resolve
concerns associated with AFOs. Extending and expanding the concerted and
collaborative research effort of the investigators involved in the regional
research project will ensure that the strategic issues are being addressed
in a timely and effective manner. Special efforts are planned to
include economists, microbiologists and others to integrate the component
solutions into strategies that are sustainable for US farms.
Utilizing Best Management
Practices
Nearly all the manure
from AFO's in the US is currently land applied (Cast 1996); in order to
sustain production while protecting the environment, increased resources
are needed to develop and transfer technologies to producers. Specific
needs are in the areas of site specific land application; effective manure
handling and treatment systems for modifying and improving the properties
of animal manure for optimal nutrient utilization; animal diet modifications
for reducing excretion of nitrogen, phosphorous, and other environmentally
sensitive chemical elements; crop system selection to best use the manure
nutrients; and reducing nitrogen loss via ammonia volatilization. A holistic
watershed approach needs to be taken to manage the nutrients from various
sources including animal manure to prevent adverse impacts on surface and
ground water quality (USDA 2001). The development of equipment to quickly
determine nitrogen and phosphorus contents of soils and manures, and then
accurately change application rates, is essential to make it possible to
supply manure to meet the crop needs (Gilley and Risse 2000).
Non-nutrient Pollutants
Advanced and cost
effective technologies are needed to explore the uses of manure as raw
materials for value-added products, such as feed, fuel, and chemicals (Parker
2000). The fate and transport of pathogens, hormones and other constituents
from manures to the various parts of food chain will require intensive
research. Innovative approaches are needed to avoid the contamination
of foods with effluents from animal production facilities (Cast 1996).
Air Quality
The airborne pollutants
from livestock and poultry facilities offend many rural residents, making
it difficult for farmers and homeowners to coexist. Additionally,
the air quality within facilities can have adverse health effects on workers
(Thu 1995). Methods are needed to objectively measure the gaseous
and particulate pollutants, and then to reduce emissions from facilities.
Improved animal facility design, manure treatment technologies and management
practices are needed to minimize the generation and emission of odors,
gases and particulates from AFOs (Miner 1995).
Participation
The institutions and
individuals participating in the proposed MRF have demonstrated the capabilities
to address all the needs listed. Major benefits of the multistate
cooperation will be in obtaining and comparing results from a broad geographic
area, representing different climates, cropping systems and types of production
management.
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