Inspection Services Blog

Registration and Call for Posters Open for 31st Annual FREP/WPH Nutrient Management Conference

Registration is now open for the 31st Annual Nutrient Management Conference, hosted by the California Department of Food and Agriculture’s (CDFA) Fertilizer Research and Education Program (FREP) and Western Plant Health (WPH). This year’s conference will be held at the DoubleTree by Hilton Hotel in Modesto, California, November 8-9, 2023, and includes a pre-conference tour of Duarte Nursery in Hughson, CA on November 7.

The Nutrient Management Conference brings together industry professionals and academic researchers to learn about and share the latest research and innovative management practices for fertilizing materials. This year’s conference agenda includes information on irrigation and nitrogen management in carrots, industrial hemp, and olives, nitrogen and phosphorus management in recycled almond orchards, nitrate leaching reduction in vegetable production, site specific nitrogen fertilization for annual crops, educational videos on 4R crop nutrient management and fertigation practices, Comanage, and green ammonia production. In addition, there will be a panel discussion on the challenges of nitrogen and water management in a wet year as well as workshops on pump efficiency testing and salinity management.

Early conference registration (through October 27) is $215 and currently enrolled students pay $130. Late registration fees (after October 27) are $245 and $140 for students. Continuing education units (CEUs) for Certified Crop Advisers and Self-Certified Growers will be available for the conference.

Upon registration, conference attendees can sign-up for the free nursery tour on November 7 (limited space available).

A poster session will be held the evening of November 8 for undergraduate and graduate students, researchers, and industry members to present their ongoing California research, outreach and/or demonstration projects related to irrigation and nutrient management. Submissions must include poster title, author names and affiliations, and an abstract (350-word limit). FREP does not accept abstracts/posters related to proprietary product development, testing or promotions. To present a poster at the conference, submit your abstract(s) to by October 27, 2023One presenter per accepted abstract will receive complementary conference registration.

To view the agenda, call for poster details, and register online, visit the conference website: For more information, please contact FREP staff at or (916) 900-5022.

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