{"id":242,"date":"2017-10-25T07:59:17","date_gmt":"2017-10-25T14:59:17","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/FREP\/?p=242"},"modified":"2026-04-02T13:05:54","modified_gmt":"2026-04-02T20:05:54","slug":"research-update-new-fertigation-book","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/research-update-new-fertigation-book\/","title":{"rendered":"Research Update: New Fertigation Book"},"content":{"rendered":"

Research Project:<\/strong> New Fertigation Book<\/p>\n

\"Figure<\/a>

Figure 4-9 in book. Example demonstration unit of a proportional injection unit with venturis, magnetic chemical flow meters, and modulated (meaning the opening is carefully adjusted, as opposed to pulsing) valves on the chemical line. The booster pump on the right-hand side pressurizes the water that flows through the venturis.<\/em><\/p><\/div>\n

Status:<\/strong> Last year of a two year study<\/p>\n

Issue:<\/strong> There are many fertilizer publications and research papers. However, few of these resources focus on pragmatic chemical applications via irrigation water \u2013 especially in light of special California drought conditions. An older publication of FERTIGATION has been an extremely important reference for practitioners in California.\u00a0 But it is over 20 years old and was written at a time when fertigation was in its relative infancy, when organic farming was scarce, and when environmental regulations related to fertilizers were few.\u00a0 Equipment and chemicals have both changed, as well as management practices.\u00a0 The new FERTIGATION book will provide a valuable update that will hopefully serve California well for another 20 years.<\/p>\n

Methods\/Locations:<\/strong> The first step is an evaluation of the previous version and an analysis of necessary updates. This process is augmented by literature searches and interviews with practitioners (growers, researchers, fertigation equipment companies, etc.) to fill in missing or outdated sections.\u00a0 The resulting information will be edited and the book will be published electronically.<\/p>\n

Main Findings:<\/strong> The book will cover typical subjects such as commercial fertilizer properties, injection equipment, solubility, crop nutrient uptake patterns (lb. vs. stage of growth), achieving good distribution uniformity with different irrigation methods, chemical maintenance of drip systems, and water amendments to improve infiltration rates. It will also cover special topics such as: a discussion of the A\/R nitrogen ratio adopted by the Regional Water Quality Control Board, biostimulants, organic farming fertilizers, proportional dosing, new hardware, and oxygen injection in water.<\/p>\n

Potential Impact:<\/strong> This publication will assist growers in meeting regulatory requirements, now and in the future. A combination of good water and fertilizer management will increase production and possibly decrease expenses.<\/p>\n

\"Chemical<\/a>

Figure 4-10 in book. Control type #3 with the important addition of an accurate chemical flow meter providing a feedback loop to the process controller.<\/em><\/p><\/div>\n

Full Project Report:<\/strong> https:\/\/www.cdfa.ca.gov\/is\/docs\/15-0393-Burt.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Research Project: New Fertigation Book Status: Last year of a two year study Issue: There are many fertilizer publications and research papers. However, few of these resources focus on pragmatic chemical applications via irrigation water \u2013 especially in light of special California drought conditions. An older publication of FERTIGATION has been an extremely important reference for practitioners in California.\u00a0 But …<\/p>\n

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The course covers new techniques in the control and application of fertilizers\u2026","rel":"","context":"In "Nutrient Management Events"","block_context":{"text":"Nutrient Management Events","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/nutrient-management-events\/"},"img":{"alt_text":"IRTC","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2017\/06\/Irrigation-225x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":389,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/fertigation-short-course-2\/","url_meta":{"origin":242,"position":1},"title":"Fertigation Short Course","author":"Brooke Elliot","date":"February 6, 2018","format":false,"excerpt":"What: A one-day short course on fertigation is being offered by the Cal Poly Irrigation Training and Research Center (ITRC) with funding from the Fertilizer Research and Education Program (FREP). The course covers new techniques in the control and application of fertilizers through irrigation systems, and strategies to comply with\u2026","rel":"","context":"In "Nutrient Management Events"","block_context":{"text":"Nutrient Management Events","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/nutrient-management-events\/"},"img":{"alt_text":"Fertigation course, March 2017","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2018\/02\/ITRC-Fertigation-Training-292x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":212,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/events-for-march-2017\/","url_meta":{"origin":242,"position":2},"title":"Events for March 2017","author":"Brooke Elliot","date":"February 27, 2017","format":false,"excerpt":"Efficient Irrigation and Nitrogen Use Workshop What: Hosted by the California Almond Sustainability Program, this workshop gives almond growers an opportunity to learn about tools and techniques to increase irrigation efficiency through Almond Board of California\u2019s (ABC\u2019s) Irrigation Continuum, and to improve the accuracy of nitrogen applications through the use\u2026","rel":"","context":"In "Nutrient Management Events"","block_context":{"text":"Nutrient Management Events","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/nutrient-management-events\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":189,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/research-update-fertilizer-value-of-nitrogen-in-irrigation-water\/","url_meta":{"origin":242,"position":3},"title":"Research Update: Fertilizer Value of Nitrogen in Irrigation Water","author":"Brooke Elliot","date":"February 15, 2017","format":false,"excerpt":"Research Project: Determining the Fertilizer Value of Ambient Nitrogen in Irrigation Water - Cahn, M. et al. Status: Final year of study Issue: Irrigation water from many wells on the Central Coast contains a significant amount of nitrate-nitrogen (NO3-N). The N content in irrigation water has not been accounted for\u2026","rel":"","context":"In "All"","block_context":{"text":"All","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/all\/"},"img":{"alt_text":"Manifold and injection system used for simulating irrigation water with different concentrations of nitrate-N.","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/12\/Cahn-blog-300x200.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":72,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/cdfa-accepting-concept-proposals-for-2016-fertilizer-research-and-education-grants\/","url_meta":{"origin":242,"position":4},"title":"CDFA Accepting Concept Proposals for 2016 Fertilizer Research and Education Grants","author":"Brooke Elliot","date":"December 29, 2015","format":false,"excerpt":"The California Department of Food and Agriculture\u2019s Fertilizer Research and Education Program (FREP) is currently accepting concept proposals for the 2016 grant cycle. FREP\u2019s 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\u2026","rel":"","context":"In "FREP Grant Program"","block_context":{"text":"FREP Grant Program","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/frep-grant-program\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":139,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/key-learnings-from-the-frepwpha-conference\/","url_meta":{"origin":242,"position":5},"title":"Key Learnings from the FREP\/WPHA Conference","author":"Brooke Elliot","date":"November 30, 2016","format":false,"excerpt":"The twenty fourth annual FREP\/WPHA Conference took place on October 26-27, where speakers from industry, academia, and agricultural consulting provided cutting edge information on nutrient management in California agriculture. The conference presentations covered a wide range of nutrient management topics including education and outreach, soil microbiology, government regulations and irrigation,\u2026","rel":"","context":"In "Nutrient Management Events"","block_context":{"text":"Nutrient Management Events","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/nutrient-management-events\/"},"img":{"alt_text":"Conf-Key-Learnings-Banner","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/11\/Conf-Key-Learnings-Banner-1024x330.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/11\/Conf-Key-Learnings-Banner-1024x330.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/11\/Conf-Key-Learnings-Banner-1024x330.jpg?resize=525%2C300 1.5x"},"classes":[]}],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/users\/5516"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/comments?post=242"}],"version-history":[{"count":8,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/242\/revisions"}],"predecessor-version":[{"id":649,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/242\/revisions\/649"}],"wp:attachment":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/media?parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/categories?post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/tags?post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}