{"@context":"https://schema.org","@type":"TechArticle","id":"CROP-ARU-001","slug":"arugula","canonical_url":"https://flavorotor.com/research/arugula","machine_readable_url":"https://flavorotor.com/research/data/chapters/arugula.json","markdown_url":"https://flavorotor.com/research/markdown/arugula","title":"Arugula research programme","description":"A defined EC experiment for arugula cultivar Standard, measuring yield, nitrate, glucosinolates and sensory pungency.","chapter":"Crop programmes","version":"1.1","updated":"2026-07-26","table_of_contents":[{"id":"starting","label":"Literature-matched starting condition"},{"id":"outcomes","label":"Outcomes"},{"id":"claim","label":"Claim rule"}],"html":"<section aria-label=\"Article summary\" class=\"fr-article-summary\"><div><span>In brief</span><p>A defined EC experiment for arugula cultivar Standard, measuring yield, nitrate, glucosinolates and sensory pungency.</p></div></section><h2 id=\"starting\">Literature-matched starting condition</h2>\n<div class=\"table-wrap\"><table><thead><tr><th>Variable</th><th>Condition</th><th>Classification</th></tr></thead><tbody><tr><td>Cultivar</td><td>Standard</td><td>required to transfer <button aria-label=\"Open source record R05\" class=\"research-source-trigger\" data-research-source=\"R05\" type=\"button\">[R05]</button> directly</td></tr><tr><td>pH</td><td>5.8 ± 0.1</td><td>study operating condition</td></tr><tr><td>EC baseline</td><td>1.5 mS/cm</td><td>low-middle study treatment</td></tr><tr><td>EC treatments</td><td>1.2, 1.5, 1.8, 2.1 mS/cm</td><td>exact <button aria-label=\"Open source record R05\" class=\"research-source-trigger\" data-research-source=\"R05\" type=\"button\">[R05]</button> treatment levels</td></tr><tr><td>Recipe</td><td>same balanced formulation scaled to target EC</td><td>required for interpretability</td></tr></tbody></table></div>\n<p><button aria-label=\"Open source record R05\" class=\"research-source-trigger\" data-research-source=\"R05\" type=\"button\">[R05]</button> found the balance of growth and quality in the named cultivar was strongest around 1.5–1.8 mS/cm, while 2.1 mS/cm is better treated as a higher-strength experimental condition rather than a default. <button aria-label=\"Open source record R05\" class=\"research-source-trigger\" data-research-source=\"R05\" type=\"button\">[R05]</button></p>\n<h2 id=\"outcomes\">Outcomes</h2>\n<div class=\"table-wrap\"><table><thead><tr><th>Category</th><th>Measurement</th></tr></thead><tbody><tr><td>Production</td><td>fresh/dry mass, leaf area, harvest time</td></tr><tr><td>Safety/quality</td><td>nitrate concentration</td></tr><tr><td>Flavour-related chemistry</td><td>glucosinolates and selected phenolics</td></tr><tr><td>Sensory</td><td>pungency, bitterness, green aroma, overall liking</td></tr><tr><td>Resource use</td><td>water, nutrient additions and electricity per harvest mass</td></tr></tbody></table></div>\n<h2 id=\"claim\">Claim rule</h2>\n<p>A higher glucosinolate concentration can support a mechanism for changed pungency, but sensory testing is still required. “More phytochemical” is not automatically “better tasting”.</p>","text":"In brief A defined EC experiment for arugula cultivar Standard, measuring yield, nitrate, glucosinolates and sensory pungency. Literature-matched starting condition Variable Condition Classification Cultivar Standard required to transfer [R05] directly pH 5.8 ± 0.1 study operating condition EC baseline 1.5 mS/cm low-middle study treatment EC treatments 1.2, 1.5, 1.8, 2.1 mS/cm exact [R05] treatment levels Recipe same balanced formulation scaled to target EC required for interpretability [R05] found the balance of growth and quality in the named cultivar was strongest around 1.5–1.8 mS/cm, while 2.1 mS/cm is better treated as a higher-strength experimental condition rather than a default. [R05] Outcomes Category Measurement Production fresh/dry mass, leaf area, harvest time Safety/quality nitrate concentration Flavour-related chemistry glucosinolates and selected phenolics Sensory pungency, bitterness, green aroma, overall liking Resource use water, nutrient additions and electricity per harvest mass Claim rule A higher glucosinolate concentration can support a mechanism for changed pungency, but sensory testing is still required. “More phytochemical” is not automatically “better tasting”.","source_ids":["R05"],"visuals":[],"sources":[{"id":"R05","authors":"Yang, Teng; Samarakoon, Uttara C.; Altland, James; Ling, Peter","year":2021,"title":"Photosynthesis, Biomass Production, Nutritional Quality, and Flavor-Related Phytochemical Properties of Hydroponic-Grown Arugula (Eruca sativa Mill.) 'Standard' under Different Electrical Conductivities of Nutrient Solution","publication":"Agronomy","doi":"10.3390/agronomy11071340","source_type":"peer-reviewed research","relevance":"Directly compares EC 1.2, 1.5, 1.8 and 2.1 mS/cm in arugula cultivar Standard and reports yield and flavour-related phytochemicals.","verification":"Publisher, PubMed, ISO or official proceedings metadata checked 2026-07-26","url":"https://doi.org/10.3390/agronomy11071340","verified_on":"2026-07-26","verification_status":"DOI METADATA CHECKED","verified_against":"Publisher, DOI landing page, PubMed or official repository where available"}]}