Biodiversity Reserves --
New Light on an Old Practice
Biodynamic certification requires that 10% of total farm acreage be devoted to biodiversity preservation and enhancement. This focus on the importance of natural ecosystems, and their interconnection with agricultural systems, has long set Biodynamics apart from other farming philosophies. Biodynamic farmers have established and protected wild areas on their farms for decades and have seen the many benefits of doing so.
In recent years, government agencies have shifted focus to include a greater variety of farm-based conservation practices that may receive direct funding or other support, many of which dovetail very well with the Biodynamic Standards. The Natural Resources Conservation Service (NRCS) hosts a number of programs focused on environmental improvement and protection. The Environmental Quality Incentives Program (EQIP) includes a long menu of supported programs, including the establishment of pollinator habitat and creation of wildlife corridors and reserve areas.
In 2018, the Conservation Reserve Program added Prairie Strips to the list of accepted practices for which landlowners can enroll, receiving incentive payments and 50% cost share for installation. The program focuses on a mix of plant species native to each state, and allows for some flexibility of installation, with the landowner deciding where and how much of a field will be planted in prairie species, and the allowance of using the prairie strips as end rows for turning equipment.
Researchers have found a nearly three-fold higher density of grassland birds on fields with prairie strips, especially important given the dramatic decline of grassland nesting species in North America since 1970. Pollinator species numbers and diversity also increase with the presence of prairie strips. Researchers also tout the benefits of decreasing erosion and runoff from crop production areas. Prairie plants, famous for their extensive and deep root structure, are known for their ability to absorb excess water, along with nitrates and phosphorus, helping to keep these compounds out of waterways and groundwater. Research by scientists at Iowa State University indicates that each acre of prairie strips has the potential to sequester 25-40 tons of carbon over 100 years.
The vision of American Industrial Agriculture which rose to prominence in the 20th century did not include natural systems. Extensive monocultures have long dominated the country’s most productive agricultural regions, and fencerows were removed and field edges plowed in a quest for higher yields and greater production. With natural checks and balances removed, this system relies on synthetic fertilizers, pesticides, and herbicides to provide crop nutrition and prevent damage from insects and competition from weeds.
An updated version of American Agriculture seems to be emerging that counters that model with one basing some of its resilience on natural systems. Natural ecosystems are rarely a monoculture, are often comprised of perennials, and eschew bare ground. Diversity within the system creates balance. Food and fiber production can thrive in such a system, and human communities can experience the benefits as well.
Only certified Biodynamic agriculture requires a 10% biodiversity reserve, but as awareness has grown, we’ve seen a variety of farms adopt similar practices, often with the assistance of the NRCS or other agencies. This re-shaping of agriculture is a slow but encouraging trend, and Biodynamic farms have an opportunity to lead the conversation about the many benefits to faming, communities, and the planet that could result.