SANTA CRUZ AND WASHINGTON D.C. (August 1, 2019) — The Organic Farming Research Foundation (OFRF) and the Foundation for Food & Agriculture Research (FFAR) are funding two soil health research projects that examine how on-farm diversification practices control weeds and affect crop yields. OFRF and FFAR funded these two projects as part of a larger initiative to support soil health research and promote environmental sustainability. A grant to Dr. Jed Eberly at Montana State University was announced earlier this year.
Implementing diversification practices, such as crop rotations and cover cropping, is one way organic farmers build soil health. Efficient use of organic fertilizers in combination with these practices can enhance soil fertility but determining how much organic fertilizer to apply is a key challenge; too much fertilizer wastes money and pollutes the environment, while too little can impede crop growth. However, there is still much to learn about how diversification practices affect the availability of nutrients in the soil. Addressing this question would help farmers reduce added costs and environmental impacts associated with nutrient losses from organic fertilizers.
At UC Berkeley, a team led by Timothy Bowles, Assistant Professor of Agroecology, is working to help solve this problem. This research will allow farmers make more informed decisions about nutrient management, in particular which type of organic fertilizer to use and how to time fertility applications on diversified organic farms.
The second project focuses on the southern region of the U.S., an area where challenges in weed, insect and soil fertility management have made it hard to meet the steady demand for organic sweet potatoes. Currently, many organic sweet potato farmers depend on repeated cultivation to manage weeds, a process that is energy and labor intensive and damaging to soil health. Their crops are also regularly damaged by invasive pests. For example, the wireworm can damage up to 40 percent of the sweet potato crop in North Carolina, negatively impacting farmers’ profitability. Led by Alex Woodley, an Assistant Professor at North Carolina State University, this project assesses the viability of annual winter cover crop systems as an effective tool for weed and insect control. The project also evaluates the effects of increasing rates of organic nitrogen fertilizer in each cover crop treatment. This systems-level approach has the potential to provide innovative management techniques to organic sweet potato farmers in North Carolina that protect soil health.
“We are pleased to partner with FFAR to fund this innovative research,” said Dr. Jed Eberly at Montana State University, OFRF’s Executive Director. “The goal is to help organic producers and others interested in building soil health make more informed decisions about managing fertility on their farms and ranches.”