{"id":82536,"date":"2020-06-02T15:39:34","date_gmt":"2020-06-02T19:39:34","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/nutrient-status-growth-black-spruce-layers-planted-seedlings-response-nutrient\/"},"modified":"2020-06-02T15:39:34","modified_gmt":"2020-06-02T19:39:34","slug":"nutrient-status-growth-black-spruce-layers-planted-seedlings-response-nutrient","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/nutrient-status-growth-black-spruce-layers-planted-seedlings-response-nutrient\/","title":{"rendered":"Nutrient status and growth of black spruce layers and planted seedlings in response to nutrient addition in the boreal forest of Qu\u00e9bec"},"content":{"rendered":"\n<p>Published in <strong>Canadian Journal of Forest Research 28: 729-736<\/strong><\/p>\n<p>The effect of nutrient addition (fertilization with N, P, and K at a rate of 448, 224, and 224 kg<sup>.<\/sup>ha<sup>-1<\/sup>, respectively) on height growth, root biomass, leaf area, and foliar nutrient concentrations of slow-growing layers and newly planted seedlings of black spruce (<em>Picea mariana <\/em>(Mill.) BSP) was evaluated on an apparently productive mesic site in Qu\u00e9bec. Annual height growth increment of fertilized layers was greater than 20 cm<sup>.<\/sup>year<sup>-1<\/sup> compared with 3-4 cm<sup>.<\/sup>year<sup>-1<\/sup> for the other three treatments. Fine root biomass (&lt;2 mm in diameter) and leaf area growth were significantly higher for fertilized layers and seedlings compared with their respective controls. For both current and 1-year-old needles, foliar N concentration on a unit leaf area basis increased significantly for both layers and seedlings, and vector analysis showed that, in aIl cases, N was the most limiting nutrient. Five growing seasons after treatment, the only residual effect of fertilization on foliar nutrient concentrations was higher foliar N in fertilized seedlings. Thus, it appears that the slow growth of the unfertilized layers on this site was due to resource limitation rather than to the type of regeneration as such.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Canadian Journal of Forest Research 28: 729-736 The effect of nutrient addition (fertilization with N, P, and K at a rate of 448, 224, and 224 kg.ha-1, respectively) on height growth, root biomass, leaf area, and foliar nutrient concentrations of slow-growing layers and newly planted seedlings of black spruce (Picea mariana (Mill.) BSP) [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1180,1181,1182],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[],"class_list":["post-82536","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forestry-research","cptt_theme-forests","cptt_theme-silviculture","cptt_categ_publi-scientific-article"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nutrient status and growth of black spruce layers and planted seedlings in response to nutrient addition in the boreal forest of Qu\u00e9bec - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"It appears that the slow growth of the unfertilized layers on this site was due to resource limitation rather than to the type of regeneration as such.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/nutrient-status-growth-black-spruce-layers-planted-seedlings-response-nutrient\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nutrient status and growth of black spruce layers and planted seedlings in response to nutrient addition in the boreal forest of Qu\u00e9bec - 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