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Dairies and six different cropping systems show great potential for reducing use of synthetic pesticides and fertilizers, according to a new report released by the .

Researchers from the sustainable agriculture program have been tracking results of the grants program for rice, walnut, citrus, strawberries, apples, prunes and dairies, in which farmers voluntarily participate to reduce their use of agricultural chemicals.

"The BIFS report documents elimination and large reductions in high-risk agrochemicals used in these production systems," says , director of the sustainable agriculture program. "For example, the walnut project has reduced nitrogen fertilizer application rates by an average of 53 pounds per acre, with no apparent effect on yield. This can help protect groundwater from nitrate pollution."

Project participants develop economically sound practices for reducing pesticide and fertilizer use. Each project enrolls between eight and 33 participating farms, which are used for testing new methods, demonstrating proven techniques and hosting field days.

"The projects use an extension approach that emphasizes a 'farmer-to-farmer' method of information sharing and encourages public-private cooperation," says Jenny Broome, associate director of the sustainable agriculture program. "It brings scientists, farmers and consultants together in a collaborative environment that helps participants learn and adapt integrated farming practices to local conditions."

The BIFS report is online at