{"id":82213,"date":"2019-01-30T12:18:13","date_gmt":"2019-01-30T17:18:13","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/effects-foliar-urea-fertilization\/"},"modified":"2019-01-30T12:18:13","modified_gmt":"2019-01-30T17:18:13","slug":"effects-foliar-urea-fertilization","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/effects-foliar-urea-fertilization\/","title":{"rendered":"Effects of foliar urea fertilization on nitrogen concentrations of containerized 2+0 jack pine seedlings produced in forest nurseries"},"content":{"rendered":"\n<p>Published in <b>Tree Planters&#8217; Notes 60(1): 44-50<\/b><\/p>\n<p>A 7-day study of urea foliar fertilization was performed during the growing season (July) of containerized 2+0 jack pine (<em>Pinus banksiana<\/em> Lamb.) to evaluate if an application of either urea (U) or urea with surfactant (US) can rapidly increase foliar nitrogen (N) concentration relative to no fertilization control (NF) treatments. Adding a surfactant to the urea solution significantly improved N concentration in needles, stems, and entire seedlings. At day 0 (2 hours after fertilization), foliar N concentration of US-fertilized seedlings was already significantly greater than that of seedlings in the U and NF treatments by 10 and 11 percent, respectively. After 7 days, foliar N concentration of US seedlings (2.03 percent) continued to be significantly greater than that of seedlings in the U and NF treatments (1.80 and 1.67 percent, respectively). These results show that foliar urea application, especially with addition of a surfactant, along the growing season is an effective tool to rapidly increase the foliar N concentration of jack pine seedlings.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Tree Planters&#8217; Notes 60(1): 44-50 A 7-day study of urea foliar fertilization was performed during the growing season (July) of containerized 2+0 jack pine (Pinus banksiana Lamb.) to evaluate if an application of either urea (U) or urea with surfactant (US) can rapidly increase foliar nitrogen (N) concentration relative to no fertilization control [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1180,1181,1187],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1075,1084],"class_list":["post-82213","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forestry-research","cptt_theme-forests","cptt_theme-seeds-and-forest-seedlings-production","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-deblois-josianne","cptt_auteurs_ministeriels-j-gagnon"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - 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