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Category Archives: Nutrient Management Events


UC Nursery and Floriculture Alliance Host Virtual Q&A Session March 2 about Nitrogen Management in Commercial Greenhouse and Nursery Operations

The University of California Nursery and Floriculture Alliance (UCNFA) is holding an online Q&A session March 2 focused on nitrogen management in commercial greenhouse and nursery operations. Attendees will have the opportunity to ask questions of Don Merhaut, Bruno Pitton, and Gerry Spinelli, specialists in nursery and floriculture production. Who Should Attend? Greenhouse and nursery growers with questions about nitrogen …


Save the Date: 2020 FREP / WPHA Online Nutrient Management Conference

Every fall, the California Department of Food and Agriculture’s Fertilizer Research and Education Program (FREP) and the Western Plant Health Association (WPHA) host a nutrient management conference. The agenda focuses on the latest FREP-funded research projects and practical applications of fertilizing materials for agricultural production in California. This year’s conference will be held online October 28 & 29. The agenda for this year’s conference …


Online-Based Continuing Education for Growers

The California Central Valley Regional Water Quality Control Board requires growers to prepare Irrigation and Nitrogen Management Plans (INMP) for land enrolled in the Irrigated Lands Regulatory Program. For land in areas designated as a high-vulnerability groundwater area, INMPs must be certified by a specialist or by a grower who has attended a California Department of Food and Agriculture (CDFA) …


Certifying Irrigation and Nitrogen Management Plans

The Central Valley Regional Water Quality Control Board requires growers to prepare Irrigation and Nitrogen Management Plans (INMP) for land enrolled in the Irrigated Lands Regulatory Program. INMPs are designed to promote awareness of irrigation and nitrogen management practices among growers and reduce the likelihood of nitrate, from fertilizer, entering the groundwater and degrading water quality. For land in an …


Nitrogen Management Training for Certified Crop Advisers

The University of California Agriculture and Natural Resources (UCANR), in partnership with the California Department of Food & Agriculture (CDFA) Fertilizer Research and Education Program (FREP) and the California Association of Pest Control Advisers (CAPCA) are offering the last in-person Nitrogen Management Training for Certified Crop Advisers (CCA). CCAs who complete this training are eligible to certify Irrigation and Nitrogen …


Recap: The 2019 FREP/WPHA Nutrient Management Conference

The 27th annual Fertilizer Research and Education Program (FREP) and Western Plant Health Association (WPHA) Conference took place in Fresno, California, on October 28-30, 2019. Speakers from industry, academia and agricultural consulting provided pioneering information on nutrient and irrigation management in California agriculture. Below you will find highlights of some of the talks at this year’s conference. The PowerPoint presentations …


Registration Now Open for 27th FREP/WPHA Nutrient Management Conference

The California Department of Food and Agriculture’s (CDFA) Fertilizer Research and Education Program (FREP) and the Western Plant Health Association (WPHA) will host their 27th annual fertilizer research conference at the DoubleTree Hilton Hotel in Fresno, California, on October 28-30. The event includes a farm tour on October 28. This conference brings together industry professionals and academic researchers to learn …


2019 FREP/WPHA Conference: Save the Date and Call for Posters

Every fall, the California Department of Food and Agriculture’s Fertilizer Research and Education Program (FREP) and the Western Plant Health Association (WPHA) host a nutrient management conference. The agenda focuses on the latest FREP-funded research results and practical applications of fertilizing materials for agricultural production in the state of California. On October 28-30, 2019, the FREP/WPHA Conference will be held …


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 and nutrients to crops. Chemigation …


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 Status: Year 3 of 3 …