{"id":82092,"date":"2023-05-08T14:51:54","date_gmt":"2023-05-08T18:51:54","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/hydraulic-aeration-properties-peat-substrates\/"},"modified":"2023-05-08T14:51:54","modified_gmt":"2023-05-08T18:51:54","slug":"hydraulic-aeration-properties-peat-substrates","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/hydraulic-aeration-properties-peat-substrates\/","title":{"rendered":"Comparison of hydraulic and aeration properties of peat substrates used to produce containerized white spruce seedlings (1+0) in forest nurseries"},"content":{"rendered":"\n<p><strong>Published in Forests 14(4): 858. <a href=\"https:\/\/doi.org\/10.3390\/f14040858\">https:\/\/doi.org\/10.3390\/f14040858<\/a><\/strong><\/p>\n<p>The physical properties of peat substrates from eight tree nurseries were characterized to determine bulk density, air-filled porosity, saturated hydraulic conductivity, pore effectiveness, relative gas diffusivity and chemical properties. There were significant variations among nurseries both in growth of white spruce [<span class=\"html-italic\">Picea glauca<\/span>\u00a0(Moench) Voss] seedlings (1+0) and substrate properties. Shoot dry mass and root collar diameter were negatively correlated with air-filled porosity and saturated hydraulic conductivity, whereas root dry mass was positively correlated with bulk density. Seedling growth increased with increasing substrate bulk density up to ~0.11 g cm<sup>\u22123<\/sup>, above which value conditions may become limiting to plant performance. Our results suggest that there was no growth limitation due to restricted aeration (D<sub>s<\/sub>\u00a0D<sub>0<\/sub><sup>\u22121<\/sup>\u00a0&gt; 0.005 m<sup>2<\/sup>\u00a0s<sup>\u22121<\/sup>\u00a0m<sup>\u22122<\/sup>\u00a0s for all substrates except one) and that over-aeration reduced seedling growth under dry irrigation management.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Forests 14(4): 858. https:\/\/doi.org\/10.3390\/f14040858 The physical properties of peat substrates from eight tree nurseries were characterized to determine bulk density, air-filled porosity, saturated hydraulic conductivity, pore effectiveness, relative gas diffusivity and chemical properties. There were significant variations among nurseries both in growth of white spruce [Picea glauca\u00a0(Moench) Voss] seedlings (1+0) and substrate properties. [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1180,1181,1187],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1093],"class_list":["post-82092","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-m-lamhamedi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comparison of hydraulic and aeration properties of peat substrates used to produce containerized white spruce seedlings (1+0) in forest nurseries - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"The physical properties of peat substrates from eight tree nurseries were characterized to determine bulk density, air-filled porosity (...)\" \/>\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\/hydraulic-aeration-properties-peat-substrates\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparison of hydraulic and aeration properties of peat substrates used to produce containerized white spruce seedlings (1+0) in forest nurseries - 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