Updated Fertigation Book

In California agriculture, there has been a gradual shift from gravity-fed irrigation to pressurized systems including micro-irrigation. Micro-irrigation systems have been implemented in over 60% of irrigated acreage in California and support a more intensively managed production system. The use of pressurized irrigation systems has made significant advancements possible, including more precise delivery of chemicals […]

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Role of Mineralization in Farming

California growers have taken on an important role in their state’s broader efforts on climate change, including responding to regulatory requirements to improve their nitrogen (N) use efficiency and reduce their environmental impact. To meet these regulations, while maintaining crop yield and quality, growers must consider all potential N sources, including organic amendments and irrigation […]

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Demonstrating New Approaches to Almond Nitrogen Management

Project Title: Demonstration of a combined new leaf sampling technique for nitrogen analysis and nitrogen applications approach in almonds Project Leaders: Patrick Brown, University of California, Davis; Blake Sanden, University of California Cooperative Extension, Kern County; Allan Fulton, University of California Cooperative Extension, Tehama County; David Doll, University of California Cooperative Extension, Merced County. Project […]

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Research Update: Controlled Release Nitrogen Fertilizers

Project Title: Field Evaluation and Demonstration of Controlled Release Nitrogen Fertilizers in the Western United States Project Leaders: Charles Sanchez, University of Arizona, and Richard Smith, University of California Cooperative Extension Monterey County Project Status: Complete Overview: Controlled Release Nitrogen (CRN) has the potential to increase nitrogen use efficiency in desert vegetable production systems, by […]

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Research Update: Nitrogen Fertilizer Loading to Groundwater in the Central Valley

Research Project: Nitrogen Fertilizer Loading to Groundwater in the Central Valley. Thomas Harter et al. Status: Completed Issue: Nitrogen, in the form of nitrate, is the most common pollutant found in Central Valley groundwater. Nitrate has a maximum contaminant level (MCL) in drinking water of 45mg/L (NO3). Under natural conditions, groundwater nitrate may occur in […]

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2018 Request for Proposals

The Fertilizer Research and Education Program (FREP) funds and facilitates research to advance the environmentally safe and agronomically sound use of fertilizer in California. The FREP grant program uses a two-phase annual process. Phase I, the submission of concept proposals, is now open! Each year, research priorities are released in December with the Request for […]

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Availability of Fertilizer Research and Education Grant Funding

Grant proposals are due on September 1, 2016. FREP is currently accepting proposals for a 2016 special grant for fertilizer research and education. This competitive grant program funds research that advances the environmentally safe and agronomically sound use of fertilizing materials. Funding availability is limited to proposals that address the following research and educational priorities: […]

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CDFA Accepting Concept Proposals for 2016 Fertilizer Research and Education Grants

The California Department of Food and Agriculture’s Fertilizer Research and Education Program (FREP) is currently accepting concept proposals for the 2016 grant cycle. FREP’s competitive grant program funds research that advances the agronomic and environmental performance of fertilizing materials. The 2016 Request for Proposals (RFP) includes several initiatives put forth by the department to help […]

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