Agricultural Best Management Practices
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Agricultural Best Management Practices
Definition
Agricultural Best Management Practices (BMPs) are techniques employed in agricultural production for environmental protection, particularly water pollution, while maintaining agricultural productivity. BMPs encompass a range of agricultural techniques, both structural and vegetative, aimed at preventing soil erosion, nutrients, pesticides, and other pollutants from being carried away from agricultural fields into water bodies. Agricultural BMPs are encouraged by agricultural agencies, districts, and research centers as effective and cost-effective approaches for enhancing agricultural sustainability.
Purpose
The main goal of agricultural BMPs is to reduce environmental effects caused by agricultural activities while at the same time ensuring that agricultural activities remain profitable and productive. Agricultural activities can lead to nutrients, sediments, and chemicals being added to waterways through runoff and erosion. This problem is addressed through BMPs, which minimize pollutant sources as well as their movement into waterways. Studies carried out in areas such as the Chesapeake Bay have shown that implementation of BMPs can greatly reduce nutrients and sediments entering rivers and streams.
Types of Agricultural BMPs
Agricultural BMPs may be grouped into three different categories. These categories include structural, management, and vegetative practices.
Structural Practices:
Structural BMPs include the installation of physical structures that aim to control water runoff and prevent erosion while maintaining water quality. These may include:
- Manure storage facilities: These facilities temporarily store manure and water runoff.
- Diversions: These divert water from the area.
- Grass waterways: These minimize erosion and safely channel water.
- Terraces: These are built across the slope of the field to slow the rate of water runoff and minimize soil erosion.
- Stream crossings and livestock walks: These are constructed to guide livestock across the streams.
- Riparian buffers: These are strips of vegetation found in the streams.
Management practices
Management BMPs involve changing farming practices to achieve a more positive impact on the environment. Some of the practices include:
- Nutrient management plans, which control fertilizer application rates, timing, and location
- No-till farming, which minimizes soil disturbance and erosion
- Cover crops, which protect the soil between main growing seasons
- Contour farming, which involves growing crops along slopes to reduce soil erosion
- Conservation crop rotation, which maintains soil fertility while reducing pest problems
- Prescribed grazing/pasture management, which involves managing grazing to maintain pasture health while avoiding excessive grazing
Vegetative practices
Vegetative BMPs involve the use of plants to control soil erosion. Some of the practices include:
- Using cover crops during non-growth seasons
- Using field borders and buffer strips
- Using permanent vegetation in areas prone to erosion
Environmental Benefits
If well implemented, agricultural BMPs can bring several environmental as well as agricultural benefits, such as:
- Nutrient as well as sediment reduction
- Soil health improvement
- Water infiltration as well as groundwater recharge improvement
- Wildlife habitat as well as riparian ecosystem improvement
- Water reduction as well as crop productivity improvement
Additionally, agricultural BMPs can help farmers save operational as well as long-run soil productivity benefits.
Implementation of BMPs in Agriculture
Agricultural BMP implementation can often involve collaboration between farmers, conservation districts, as well as government agencies. Additionally, there are chances that implementation of agricultural BMPs can bring several regulatory compliance benefits to farmers concerning water quality standards. Agricultural BMP implementation can often involve several components such as scientific study, farmer participation, as well as financial/technical support to bring environmental as well as agricultural benefits.
See also
References
- Bucks County Conservation District. Agricultural Best Management Practices (BMPs).
- Pioneer Valley Planning Commission. Agricultural BMPs.
- Virginia General Assembly. Agricultural BMP presentation.
- University of Florida IFAS. Agricultural Best Management Practices.
- U.S. Geological Survey. Agricultural BMPs in the Chesapeake Bay Watershed.
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