{"id":8517,"date":"2025-11-18T21:05:10","date_gmt":"2025-11-18T21:05:10","guid":{"rendered":"https:\/\/www.bartlett.com\/blog\/?p=8517"},"modified":"2025-11-18T21:05:10","modified_gmt":"2025-11-18T21:05:10","slug":"beech-leaf-disease-new-research-studies-forest-level-management","status":"publish","type":"post","link":"https:\/\/www.bartlett.com\/blog\/beech-leaf-disease-new-research-studies-forest-level-management\/","title":{"rendered":"Beech leaf disease: new research studies forest level management"},"content":{"rendered":"<p>Beech leaf disease (BLD) is a serious threat to beech trees.\u00a0 It impacts trees in urban and suburban landscapes as well as the beech forest as a whole.\u00a0 There are currently some very effective tools to manage BLD on specimen trees, landscape trees and trees in arboretums or parks.\u00a0 However, this is entirely different from managing the disease in a forest.\u00a0 Given the larger scale of a forest, it is difficult to treat every single tree.\u00a0 As such, disease management on this scale requires a different approach.\u00a0 Recently, scientists from <a href=\"https:\/\/www.bartlett.com\/bartlett-tree-research-laboratories\">The Bartlett Tree Research Laboratories<\/a> initiated a five-year experiment to study forest level management of beech leaf disease.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-8528 size-large\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/BLD-1024x666.png\" alt=\"beech leaf disease symptoms\" width=\"1024\" height=\"666\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/BLD-1024x666.png 1024w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/BLD-300x195.png 300w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/BLD-768x500.png 768w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/BLD.png 1125w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3>What is beech leaf disease?<\/h3>\n<figure id=\"attachment_8521\" aria-describedby=\"caption-attachment-8521\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img decoding=\"async\" class=\"wp-image-8521 size-medium\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified-300x224.jpg\" alt=\"nematode that causes beech leaf disease\" width=\"300\" height=\"224\" data-warning=\"Suspicious alt text\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified-300x224.jpg 300w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified-1024x766.jpg 1024w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified-768x575.jpg 768w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified-1536x1149.jpg 1536w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2025\/11\/foliar-feeding-nematode-magnified.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-8521\" class=\"wp-caption-text\">A magnified image of the nematode responsible for beech leaf disease.<\/figcaption><\/figure>\n<p>Microscopic roundworms called nematodes that feed on foliage cause beech leaf disease.\u00a0 All cultivars of American and European beech are susceptible.\u00a0 Infested trees weaken over time as the disease progresses.<\/p>\n<p>Leaves of impacted beech trees have distinctive banding patterns between the leaf veins.\u00a0 Over time, the disease will cause malformed leaves that are almost leathery in texture.\u00a0 Eventually, buds will fail to leaf out and the canopy will start to thin.<\/p>\n<h3>Studying beech leaf disease treatments<\/h3>\n<p>The Bartlett Tree Research Laboratories has been researching BLD management since the early days of the disease\u2019s discovery.\u00a0 Last year, the team announced two <a href=\"https:\/\/www.bartlett.com\/blog\/beech-leaf-disease-groundbreaking-treatment-strategies\/\">groundbreaking treatment strategies<\/a>.\u00a0 The first is a foliar application for smaller trees.\u00a0 The second is a root flare injection suitable for large trees.\u00a0 These methods have proven effective in protecting valued trees in landscapes.<\/p>\n<p>However, it&#8217;s very difficult to treat every single tree in acres and acres of forest.\u00a0 Further research presents an incredible opportunity to take a model from silviculture and see if it is possible to slow the disease down with integrative management approaches.<\/p>\n<p>The goal of the current study is not to research complete eradication, but rather to find solutions to best manage the disease at a level at which the trees can again function as they need to function within a forest setting.<\/p>\n<h3>The research experiment<\/h3>\n<p>Bartlett\u2019s scientists have established research plots at two sites: <a href=\"https:\/\/pennypacktrust.org\/\">Pennypack Trust<\/a> in Pennsylvania and <a href=\"https:\/\/ailt.org\/\">Aquidneck Island Land Trust<\/a> in Rhode Island.\u00a0 Both have forests extensively populated with beech trees.\u00a0 Further, leaf samples taken at the sites show evidence of the nematodes that cause beech leaf disease. \u00a0Over the course of the next five years, researchers will evaluate three methods of disease management against a control group on these plots.<\/p>\n<p>First, one management method borrowed from traditional forestry practices is called crown release. Select beech trees will be pruned to separate the crowns of the trees.\u00a0 This will create more light exposure.\u00a0 With the silvicultural approach, the hypothesis is that trees will grow at a faster rate and form a higher volume of wood.\u00a0 This may increase carbon storage and improve disease resilience.\u00a0 While the disease can still impact the trees, they may be able to deal with it better.<\/p>\n<p>As part of this method, some understory and mid-story beech trees will also be removed.\u00a0 Disease progression in a forest starts with the understory.\u00a0 So, removing some trees will theoretically help remove the inoculum source for the disease.<\/p>\n<p>The second management method being tested will be the use of a root flare injection treatment on select trees distributed throughout a research plot.\u00a0 Not every tree can be treated.\u00a0 So, by employing an effective treatment on a portion of the trees, will there be some level of slowing down disease progress?<\/p>\n<p>Finally, a third method will combine crown release and selective removal along with the root flare injections.<\/p>\n<h3>The forest of the future<\/h3>\n<p>This research represents the first venture into forest level management of beech leaf disease.\u00a0 It examines not just beech trees, but also the other species in the plots to see how they respond to changing forest dynamics.\u00a0 The goal is not complete eradication of the disease, but rather long-term forest health.<\/p>\n<p>Diverse forest stands are going to help slow the disease down.\u00a0 If some of the beech canopy can be retained while also allowing other species to establish as the next generation, it seems possible to create a more resilient forest overall.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Beech leaf disease (BLD) is a serious threat to beech trees.\u00a0 It impacts trees in urban and suburban landscapes as well as the beech forest as a whole.\u00a0 There are currently some very effective tools to manage BLD on specimen trees, landscape trees and trees in arboretums or parks.\u00a0 However, this is entirely different from&hellip; <a class=\"continue\" href=\"https:\/\/www.bartlett.com\/blog\/beech-leaf-disease-new-research-studies-forest-level-management\/\">Read More<span> Beech leaf disease: new research studies forest level management<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":8528,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7,12],"tags":[],"class_list":["post-8517","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pests-and-diseases","category-tree-research"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Beech leaf disease: new research studies forest level management - Tree Topics<\/title>\n<meta name=\"description\" content=\"Beech leaf disease is a serious threat to beech trees. 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