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What is waste
management? |
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The proper management of waste
from agricultural operations can contribute in a significant way
to farm operations. Waste management helps maintain a healthy
environment for farm animals and can reduce the need for
commercial fertilizers while providing other nutrients needed
for crop production. Agricultural waste typically associated
with animals includes but is not limited to manure, bedding and
litter, wasted feed, runoff from feedlots and holding areas, and
wastewater from buildings like dairy parlors.
Best management practices (BMPs) such as
rotational grazing
and
pasture renovation
to maintain adequate vegetative cover,
riparian buffers,
and structures built to trap or retain waste should be utilized
in order to prevent contamination of both surface waters and
groundwater. When this waste is carried in overland flow from
rain events, it is categorized as a nonpoint source pollutant,
or one that originates from diffuse areas of land. Nonpoint
source pollutants are one of the primary water quality problems
in the United States. Furthermore, runoff and waste that does
not pass through a vegetated buffer zone along the waterbody is
likely to result in bank erosion and subsequent property loss.
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Why be
concerned about waste management? |

In an extreme case of improper
management, livestock waste is concentrated in a riparian area
causing severe water quality problems. |
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If not managed properly,
agricultural waste from farm operations can pollute the
environment resulting in impacts to water quality and a general
loss of aesthetics. The degradation of water quality can impact
adjacent waterways and groundwater both onsite and offsite.
This degradation reduces the ability of these resources to
support aquatic life and water for human and animal
consumption. Nitrates, which are commonly associated with
fertilizers and agricultural waste runoff, can seep into
groundwater. Well water contaminated with nitrates is hazardous
to humans, particularly for infants, as it results in oxygen
depletion in the blood. As alluded to above, proper waste
management can reduce operating costs associated with fertilizer
application if managed properly. |
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What are the
benefits of waste management? |
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Like most other aspects of
agricultural production, there are requirements for the
application and management of agricultural waste on farms.
However, the primary reasons behind managing agricultural waste
make good sense both environmentally and economically. Where
feasible, the reuse of animal waste in farming operations can
reduce the quantity and hauling costs of commercial fertilizer.
The contribution of animal waste increases the organic matter
content of soils, which not only increases nutrient availability
for crops but also improves the water holding capacity and tilth
of the soil. Good waste management reduces the instances of
well water contamination and minimizes surface water pollution. |
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How would one implement waste
management? |
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Fortunately, there are planning documents
and BMP options available to farmers for managing agricultural
waste. Waste management is commonly part of an overall
nutrient management plan
developed for a farm. These plans play an integral role in the
comprehensive waste management planning process and are used to
spell out how farmers intend to maximize the benefit of
nutrients available from farm waste products to benefit crop
production and minimize environmental impact. Although State
and Federal governments are demanding more accountability in
agricultural waste management, many such plans are developed
voluntarily as an important aspect of the business. Developing
a plan for how waste is managed on your farm not only aids in
the tracking of operational costs and the making of better management
decisions; it can also be used to leverage State and Federal funding
assistance. Self-regulation protects private property rights
and reduces the need for governmental control and regulations.
Site-specific waste management
strategies should be developed and adhered to in order to
maximize the cost efficiency and adequately protect local
environmental resources. This will require that routine soil
and waste testing take place to match the crop needs to the
nutrients available. By tracking the timing and application
rates (quantity) of agricultural waste required, the space
required to store operational waste can be determined. |
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A covered livestock feeding
area located on an upland section of pasture is one example of
good waste management. |
Waste can be stored as a solid in
building structures, or as a liquid in
holding ponds or anaerobic lagoons. Being able to store waste
in an acceptable form until it is needed is a critical component
of a waste management strategy. If waste is not handled
properly or is not applied at the right time, valuable nutrients
are lost and environmental and human and animal health problems
are created. Besides the management practices noted above, the
BMPs listed below can be used to improve waste handling and
application:
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Exclude
livestock from sensitive areas such as
riparian buffers
and wetlands;
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Locate
winter feeding areas in a relatively flat upland area;
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Do not
spread
waste near waterways;
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Employ
other
conservation practices that minimize runoff and erosion to
fields where waste is applied;
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Avoid
spillage
or overflow of lagoons, ponds and structures used to house
waste;
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Regularly
check
waste application equipment and make sure it is calibrated;
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Where
possible, divert runoff from land above livestock areas and
away from nearby surface waters and wells;
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If an
alternative water supply source is unavailable for
livestock, create dedicated, limited access points to
streams for drinking; and
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Consider
adding
flush gutters to livestock confinement systems to confine
waste for future application.
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Other ways to improve waste
management on farms is to routinely check areas where fuel and
chemicals are stored for spills and leaks and to be sure your
farm is in compliance with applicable storage and handling
regulations. Keeping up-to-date on technologies designed to
improve waste management such as composters for disposing of
livestock mortalities and integrating them into your waste
management strategy is also good practice.
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Contact the
following agencies for technical and/or cost share assistance
with waste management: |
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North
Carolina
USDA Natural
Resources Conservation Service
225 Valley
River Ave., Ste. J
Murphy, NC
28906
(828) 837-6417 x3
glenn.carson@nc.usda.gov
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Georgia
USDA Natural
Resources Conservation Service
185 Welborn
Street, Box 3
Blairsville,
GA 30512
(706)
745-2794 x3
doug.towery@ga.usda.gov
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North
Carolina
N.C. Division
of Water Quality, Animal Feeding Operations Unit
1636 Mail
Service Center
Raleigh, NC
27699
(919)
733-3221
http://dem.ehnr.state.nc.us/aps/afou/afou_home.htm
Cherokee Co.
Soil & Water Conservation District
225 Valley
River Ave., Ste. J
Murphy, NC
28906
(828) 837-6417 x3
michael.stiles@cherokeecounty-nc.gov
Clay Co. Soil
& Water Conservation District
PO Box 57
Hayesville,
NC 28904
(828)
389-9764
glen.cheeks@nc.nacdnet.net
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The following
web sites provide additional information about waste management:
USDA Natural
Resources Conservation Service
Nutrient and
Pest Management Technical Resources
http://www.nrcs.usda.gov/technical/nutrient.html
Technical
Reference Documents for North Carolina
http://www.nc.nrcs.usda.gov/technical/TechRef/techref-water.html
Job Sheets for Individual
Agricultural Practices
http://ftp-fc.sc.egov.usda.gov/NC/ECS/Job_Sheets/NC_Job_Sheets.htm
Vermont
Natural Resources Conservation Service
Fact Sheets for Individual
Agricultural Practices
http://www.vt.nrcs.usda.gov/technical/Conservation_Practices/Index.html
North
Carolina Division of Soil and Water Conservation
Guidance
Documents for Animal Waste Management
http://www.enr.state.nc.us/dswc/pages/animalwaste_management.html
North
Carolina State University, College of Agriculture & Life
Sciences
Waste
Management Program Departmental Links
http://www.cals.ncsu.edu/waste_mgt/
U.S.
Department of Agriculture, Cooperative State Research,
Education and Extension Service
Manure and
Nutrient Management links
http://www.csrees.usda.gov/manurenutrientmanagement.cfm
University of Georgia, Department of
Biological and Agricultural Engineering, Cooperative Extension
http://www.engr.uga.edu/service/extension/publications/
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