{"id":747,"date":"2018-06-05T13:39:15","date_gmt":"2018-06-05T20:39:15","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/FREP\/?p=747"},"modified":"2019-03-13T13:03:21","modified_gmt":"2019-03-13T20:03:21","slug":"research-update-a-decision-support-tool-for-processing-tom","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/research-update-a-decision-support-tool-for-processing-tom\/","title":{"rendered":"Research Update: A Decision Support Tool for Processing Tomato Irrigation and Fertilization"},"content":{"rendered":"

Project Title<\/strong>:\u00a0\u201cDeveloping a decision support tool for processing tomato irrigation and fertilization in the Central Valley based on CropManage\u201d
\nProject Leader<\/strong>:\u00a0Daniel Geisseler
\nLocation<\/strong>:\u00a0Statewide\"\"<\/p>\n

Overview<\/strong>:\u00a0This project aims to develop web-based decision support for improved N and irrigation management of processing tomatoes on the CropManage<\/a> web tool.<\/p>\n

Issue<\/strong>:\u00a0California growers are facing increasing pressure to improve nitrogen (N) use efficiency in crop production. To achieve high yields while reducing the risk of N losses, irrigation water requirements and fertilizer applications need to match crop demand. Adjustments to irrigation and fertilization practices are generally needed on a field-by-field basis.<\/p>\n

Impact<\/strong>:\u00a0The beneficiaries of this project are the approximately 275 enterprises producing processing tomatoes in California on 288,000 acres of cropland (USDA NASS, 2015). The decision support tool will facilitate record keeping and make in-season recommendations for irrigation and N fertilization based on current weather data and field-specific factors. Growers and consultants choosing not to use CropManage <\/a>will also benefit from the data collected and presented at outreach events, allowing them to improve water and N use efficiency in their fields.<\/p>\n

Approach<\/strong>:\u00a0For the past two years, the researchers have been collecting data to add processing tomatoes to the CropManage<\/a> platform. They collected two years of data on canopy cover, aboveground biomass, soil moisture, and nitrogen uptake across different varieties. In the past year, they monitored commercial processing fields for soil N, canopy development, N uptake and fertilization, and an additional replicated field trail to evaluate different irrigation and fertigation treatments. This information, in addition to previous research, will help create a platform for processing tomatoes on CropManage.\"\"<\/p>\n

Preliminary Results<\/strong>: The yield difference between treatments with a N application rate of 225 lbs\/ac, 275 lb\/ac, and 175lb\/ac was not statistically significant (Figure 1). There was an observed luxury consumption of N in the treatments that received more N (N_275). The excess N may have accumulated in the fruit, which may explain the lack of variance in yield across treatments. Additionally, in the deficit N treatment (N_175), there may have been more soil N mineralization that contributed the necessary N.<\/p>\n

What\u2019s next<\/strong>: Dr. Geisseler has already presented these results at nine events over the past two years and CropManage presentations are being planned for this winter. Check out the FREP Calendar <\/a>for more upcoming outreach events for this project.<\/p>\n","protected":false},"excerpt":{"rendered":"

Project Title:\u00a0\u201cDeveloping a decision support tool for processing tomato irrigation and fertilization in the Central Valley based on CropManage\u201d Project Leader:\u00a0Daniel Geisseler Location:\u00a0Statewide Overview:\u00a0This project aims to develop web-based decision support for improved N and irrigation management of processing tomatoes on the CropManage web tool. Issue:\u00a0California growers are facing increasing pressure to improve nitrogen (N) use efficiency in crop production. …<\/p>\n

Read More<\/a><\/div>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[86],"tags":[120,273,274],"class_list":["post-747","post","type-post","status-publish","format-standard","hentry","category-all","tag-cropmanage","tag-grower-decision-support-tool","tag-processing-tomato"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9r16A-c3","jetpack-related-posts":[{"id":189,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/research-update-fertilizer-value-of-nitrogen-in-irrigation-water\/","url_meta":{"origin":747,"position":0},"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":334,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/grants-to-begin-funding-january-2018\/","url_meta":{"origin":747,"position":1},"title":"Grants to Begin Funding January 2018","author":"Brooke Elliot","date":"January 2, 2018","format":false,"excerpt":"The Fertilizer Research and Education Program (FREP) of the California Department of Food and Agriculture (CDFA) is pleased to announce the award of almost $800,000 in grant funds to agricultural organizations and universities this year. These grants will fund four projects that will improve the efficiency and reduce the environmental\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":79,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/california-fertilization-guidelines-and-brochures\/","url_meta":{"origin":747,"position":2},"title":"California Fertilization Guidelines and Brochures","author":"Brooke Elliot","date":"January 21, 2016","format":false,"excerpt":"The California Fertilization Guidelines on the FREP website have been expanded to include recommendations for 18 crops, representing more than half of the irrigated agriculture in California. The recent additional recommendations are for plums, peaches and nectarines. Potato recommendations are coming soon. Additionally, FREP is pleased to announce that tomato,\u2026","rel":"","context":"In "Other"","block_context":{"text":"Other","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/other\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/01\/Brochures21.gif?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/01\/Brochures21.gif?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/01\/Brochures21.gif?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2016\/01\/Brochures21.gif?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":139,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/key-learnings-from-the-frepwpha-conference\/","url_meta":{"origin":747,"position":3},"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":[]},{"id":849,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/registration-now-open-for-the-frepwpha-conference-on-october-22-24-2018\/","url_meta":{"origin":747,"position":4},"title":"Registration Now Open for the FREP\/WPHA Conference on October 22-24, 2018","author":"Brooke Elliot","date":"August 23, 2018","format":false,"excerpt":"The California Department of Food and Agriculture\u2019s (CDFA) Fertilizer Research and Education Program (FREP) and the Western Plant Health Association (WPHA) will host the 26th annual nutrient management conference at the Embassy Suites Hotel in Seaside, California, on October 23-24. The event also includes a pre-conference farm tour on October\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":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2018\/08\/Conf-Page-Banner-2018-1024x330.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2018\/08\/Conf-Page-Banner-2018-1024x330.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2018\/08\/Conf-Page-Banner-2018-1024x330.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":1252,"url":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/nitrate-quick-test\/","url_meta":{"origin":747,"position":5},"title":"Nitrate Quick Test","author":"Brooke Elliot","date":"June 25, 2019","format":false,"excerpt":"The nitrate quick test (NQT) is a cost-effective tool that can be used in nutrient management planning to determine the residual soil nitrate concentration. The results from the test can be used to improve fertilizer management and assist growers in accurately meeting crop needs. Here is an outline of the\u2026","rel":"","context":"In "Instructions"","block_context":{"text":"Instructions","link":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/category\/instructions\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/FREP\/wp-content\/uploads\/2019\/06\/NQT-infographic.png?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/747","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\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/comments?post=747"}],"version-history":[{"count":4,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/747\/revisions"}],"predecessor-version":[{"id":753,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/posts\/747\/revisions\/753"}],"wp:attachment":[{"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/media?parent=747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/categories?post=747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/FREP\/index.php\/wp-json\/wp\/v2\/tags?post=747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}