{"id":2172,"date":"2017-08-25T19:37:38","date_gmt":"2017-08-25T23:37:38","guid":{"rendered":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/?p=2172"},"modified":"2017-08-28T17:54:17","modified_gmt":"2017-08-28T21:54:17","slug":"managing-recycled-nutrient-solution-for-maximum-growth-of-hydroponic-lettuce","status":"publish","type":"post","link":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/managing-recycled-nutrient-solution-for-maximum-growth-of-hydroponic-lettuce\/","title":{"rendered":"Nutrient management for hydroponic lettuce using imaging"},"content":{"rendered":"<p>Hydroponic lettuce is usually grown by continuously recycling the nutrient solution during production. As nutrients are absorbed by plant roots, stock solution is added to the recycled solution to maintain the electrical conductivity (EC) at a target level. \u00a0Because plants absorb nutrients from the solution at different rates, the recycled solutions accumulates elements which are slowly absorbed by the roots overtime.\u00a0 Therefore, periodic draining of the recycled solution is recommended to avoid negative effects on plant growth and quality.\u00a0\u00a0The research\u00a0addresses two questions: (i) what is the effect of accumulated fertilizer salts on the plant growth of lettuce and (ii) is there a benefit of adjusting EC of the nutrient solution based on plant growth rate and water use as opposed to maintaining a target EC, and (iii) what is the best way to adjust nutrient solution concentration without impacting plant growth and with minimal environmental impact.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2171 size-large\" src=\"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-1024x332.png\" alt=\"\" width=\"1024\" height=\"332\" srcset=\"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-1024x332.png 1024w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-300x97.png 300w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-768x249.png 768w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-250x81.png 250w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-652x211.png 652w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce.png 1170w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-2176\" src=\"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2.png\" alt=\"\" width=\"632\" height=\"476\" srcset=\"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2.png 632w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2-300x226.png 300w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2-160x120.png 160w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2-173x130.png 173w, https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-content\/uploads\/sites\/15\/2017\/08\/lettuce-2-312x235.png 312w\" sizes=\"auto, (max-width: 632px) 100vw, 632px\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hydroponic lettuce is usually grown by continuously recycling the nutrient solution during production. As nutrients are absorbed by plant roots, stock solution is added to the recycled solution to maintain the electrical conductivity (EC) at a target level. \u00a0Because plants absorb nutrients from the solution at different rates, the recycled solutions accumulates elements which are&#8230;<span id=\"post-label-2172\" class=\"sr-only\">Read more about Nutrient management for hydroponic lettuce using imaging<\/span><a class=\"read-more\" href=\"https:\/\/www.purdue.edu\/hla\/sites\/cea\/managing-recycled-nutrient-solution-for-maximum-growth-of-hydroponic-lettuce\/\" aria-labelledby=\"post-label-2172\">[Read More]<\/a><\/p>\n","protected":false},"author":136,"featured_media":2177,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"issuem_issue_categories":[],"issuem_issue_tags":[],"coauthors":[44],"class_list":["post-2172","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/posts\/2172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/users\/136"}],"replies":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/comments?post=2172"}],"version-history":[{"count":7,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/posts\/2172\/revisions"}],"predecessor-version":[{"id":2188,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/posts\/2172\/revisions\/2188"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/media\/2177"}],"wp:attachment":[{"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/media?parent=2172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/categories?post=2172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/tags?post=2172"},{"taxonomy":"issuem_issue_categories","embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/issuem_issue_categories?post=2172"},{"taxonomy":"issuem_issue_tags","embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/issuem_issue_tags?post=2172"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.purdue.edu\/hla\/sites\/cea\/wp-json\/wp\/v2\/coauthors?post=2172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}