{"id":5253,"date":"2026-01-20T15:32:19","date_gmt":"2026-01-20T15:32:19","guid":{"rendered":"https:\/\/www.hello-nature.com\/int\/?p=5253"},"modified":"2026-01-20T15:32:21","modified_gmt":"2026-01-20T15:32:21","slug":"biostimulant-greenhouse-lettuce-and-tomato-yield-and-quality","status":"publish","type":"post","link":"https:\/\/www.hello-nature.com\/int\/biostimulant-greenhouse-lettuce-and-tomato-yield-and-quality\/","title":{"rendered":"Biostimulant Greenhouse Lettuce and Tomato: Yield and Quality"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5253\" class=\"elementor elementor-5253\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bbf73d6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bbf73d6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6ca2d03\" data-id=\"6ca2d03\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ce16359 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ce16359\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1884506\" data-id=\"1884506\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c975c52 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c975c52\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Summary of Effects of Plant-Derived Protein Hydrolysates on Yield, Quality, and Nitrogen Use Efficiency of Greenhouse Grown Lettuce and Tomato<\/p><div class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\"><div class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\"><h3 data-start=\"261\" data-end=\"337\">Biostimulant Greenhouse Lettuce and Tomato: A Sustainable Yield Strategy<\/h3><p data-start=\"339\" data-end=\"874\">Plant-derived protein hydrolysates are attracting increasing attention as sustainable biostimulants in greenhouse crop production. In particular, their ability to improve plant performance under varying nitrogen conditions makes them valuable tools for modern horticulture. This study explores the long-term effects of protein hydrolysates on yield, quality, and nutrient efficiency in lettuce and tomato grown under greenhouse conditions, contributing to optimized <strong data-start=\"805\" data-end=\"851\"><a href=\"https:\/\/www.hello-nature.com\/int\/biostimulants-psp\/\">Biostimulant<\/a> Greenhouse Lettuce and Tomato<\/strong> management strategies.<\/p><h3 data-start=\"876\" data-end=\"949\">Root-Applied <a href=\"https:\/\/www.hello-nature.com\/int\/biostimulants-psp\/\">Biostimulant<\/a> Solutions for Greenhouse Lettuce and Tomato<\/h3><p data-start=\"951\" data-end=\"1440\">Researchers cultivated romaine lettuce (<em data-start=\"991\" data-end=\"1010\">Lactuca sativa L.<\/em>) and Micro-Tom tomato (<em data-start=\"1034\" data-end=\"1059\">Solanum lycopersicum L.<\/em>) in commercial substrates and applied four nitrogen levels ranging from low to high availability. In addition, plants received a weekly application of a plant-derived protein hydrolysate, either through foliar spraying or root drenching. Notably, root application consistently delivered superior results compared with foliar treatments across all nitrogen levels and both species.<\/p><h3 data-start=\"1442\" data-end=\"1489\">Yield, Physiology, and Quality Improvements<\/h3><p data-start=\"1491\" data-end=\"2031\">As nitrogen availability increased, total plant dry weight also rose in both crops. However, the root-applied protein hydrolysate further enhanced biomass accumulation. Lettuce showed a 31% increase in shoot dry weight, while tomato fruit dry weight increased by 22%. Moreover, marketable fresh yield improved substantially, reaching gains of 21% in lettuce and 32% in tomato. At the same time, plants treated via the root system demonstrated higher photosynthetic activity, improved water-use efficiency, and increased chlorophyll content.<\/p><h3 data-start=\"2033\" data-end=\"2081\">Nutrient Efficiency and Antioxidant Response<\/h3><p data-start=\"2083\" data-end=\"2532\">Although higher nitrogen levels tended to reduce antioxidant compounds in lettuce leaves, the biostimulant application mitigated this decline. In contrast, tomato fruits maintained stable antioxidant levels, which further improved with root treatments. Importantly, the <strong data-start=\"2353\" data-end=\"2399\">Biostimulant Greenhouse Lettuce and Tomato<\/strong> approach significantly increased nitrogen uptake and nitrogen use efficiency, supporting both productivity and sustainability goals.<\/p><h3 data-start=\"2534\" data-end=\"2588\">Implications for Sustainable Greenhouse Production<\/h3><p data-start=\"2590\" data-end=\"2923\">Overall, these findings confirm that root-applied protein hydrolysates enhance crop performance regardless of nitrogen level. Therefore, integrating a <strong data-start=\"2741\" data-end=\"2787\"><a href=\"https:\/\/www.hello-nature.com\/int\/biostimulants-psp\/\">Biostimulant<\/a> Greenhouse Lettuce and Tomato<\/strong> strategy can help growers achieve higher yields, improved quality, and more efficient nutrient use while reducing environmental impact.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4193794 elementor-widget elementor-widget-text-editor\" data-id=\"4193794\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Publication: Agronomy<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f10b506 elementor-widget elementor-widget-text-editor\" data-id=\"f10b506\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default elementor-inline-editing pen\" data-elementor-setting-key=\"title\" data-pen-placeholder=\"Type Here...\">S. Choi, G. Colla, M. Cardarelli, H. Kim<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea43652 elementor-widget elementor-widget-button\" data-id=\"ea43652\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.mdpi.com\/2073-4395\/12\/5\/1018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Full Publication <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Summary of Effects of Plant-Derived Protein Hydrolysates on Yield, Quality, and Nitrogen Use Efficiency of Greenhouse Grown Lettuce and Tomato Biostimulant Greenhouse Lettuce and Tomato: A Sustainable Yield Strategy Plant-derived protein hydrolysates are attracting increasing attention as sustainable biostimulants in greenhouse crop production. In particular, their ability to improve plant performance under varying nitrogen conditions [&hellip;]<\/p>\n","protected":false},"author":92,"featured_media":5254,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[161,168,165,167,176,177,174,163,179],"tags":[],"class_list":["post-5253","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application","category-biostimulant-psp","category-crop","category-foliar","category-lettuce","category-root","category-scientific-publications","category-technology","category-tomato"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Biostimulant Greenhouse Lettuce and Tomato: Yield and Quality - Hello Nature International<\/title>\n<meta name=\"description\" content=\"Biostimulant Greenhouse Lettuce and Tomato improves yield, quality, and nitrogen efficiency using plant protein hydrolysates\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hello-nature.com\/int\/biostimulant-greenhouse-lettuce-and-tomato-yield-and-quality\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biostimulant Greenhouse Lettuce and Tomato: Yield and Quality - 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