{"id":1254,"date":"2010-06-08T11:54:07","date_gmt":"2010-06-08T15:54:07","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/?page_id=1254"},"modified":"2025-09-09T13:10:14","modified_gmt":"2025-09-09T17:10:14","slug":"sanitation-protocol-for-valdensinia-leaf-drop-disease","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/blueberries\/resources\/disease\/sanitation-protocol-for-valdensinia-leaf-drop-disease\/","title":{"rendered":"Sanitation Protocol for Valdensinia Leaf-drop Disease"},"content":{"rendered":"<p><!-- InstanceBeginEditable name=\"main content\" --><em>Prepared by Dr. Seanna Annis, Blueberry Pathologist, School of Biology and Ecology, University of Maine, Orono, ME<\/em>, <em>04469.<\/em><\/p>\n<p><strong>There is NO tested fungicide that will eradicate this disease from a field.<\/strong> Fungicides will only suppress the disease by protecting the plants.\u00a0 Once in a field, the fungus will produce new spores and infect plants after any three-day wet period throughout the season.\u00a0 Many fungicide applications will be necessary throughout the prune and crop years to protect plants if this disease is in your field. \u00a0We want to avoid the trouble (hopefully it is not a disaster) that is hitting growers in Nova Scotia this year from Valdensinia leaf drop disease.<\/p>\n<blockquote>\n<p style=\"text-align: center\"><strong>THE KEY IS: DO NOT MOVE ANY DISEASED LEAVES AROUND. <\/strong><\/p>\n<\/blockquote>\n<ul>\n<li><strong>Do NOT walk or drive through any areas of leaf drop or brown leaf spots in a field.<\/strong> Do NOT harvest any area with suspected (or confirmed) Valdensinia leaf drop.\u00a0 Once, confirmed to have the disease, BURN any plants with Valdensinia leaf spot to the ground including burning all leaf litter, as soon as possible.<\/li>\n<\/ul>\n<h3><strong>General Precautions<\/strong><\/h3>\n<ul>\n<li><strong>At the edge of ANY field, you visit,\u00a0 brush leaf litter off of your footwear and vehicle before going to another field. <\/strong>Brush off your footwear and vehicle tires with your hand or something that will NOT collect leaf litter.\u00a0 (If you use a brush, clean it off regularly).<\/li>\n<\/ul>\n<ul>\n<li><strong>ALL equipment, vehicles, ATVs, harvesters, blueberry boxes, etc. need to be cleaned off of leaf litter BEFORE they are moved out of a field.\u00a0 All equipment should have no leaf litter on it before you let it into your field. <\/strong>Spraying with a 5% bleach solution (one part bleach to 19 parts water), \u00a0other disinfectant or a weak soap solution may help to remove the leaf litter, but may NOT kill the fungus (see below).<\/li>\n<\/ul>\n<ul>\n<li><strong>What will NOT WORK:<\/strong> Soaking infected leaves in 10% bleach solution for 1\u00bd minutes did NOT kill the fungus! \u00a0Just dipping footwear or spraying equipment with disinfectant or bleach solution will NOT work, UNLESS the leaf litter is removed.<\/li>\n<\/ul>\n<p><strong>Please contact Seanna Annis at the Blueberry Hotline (1.800.897.0757) if you have any questions.<\/strong><\/p>\n<hr \/>\n<p><span class=\"s1\"><i>Information\u00a0in this publication is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of\u00a0products\u00a0or services mentioned. No endorsement of products or companies is intended, nor is\u00a0criticism\u00a0of unnamed products or companies implied.<\/i><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">\u00a9 2009<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\"><b>Call 800.287.0274 (in Maine), or 207.581.3188, for information on publications and program offerings from University of Maine Cooperative Extension, or visit\u00a0<\/b><a href=\"http:\/\/extension.umaine.edu\/\"><span class=\"s2\"><b>extension.umaine.edu<\/b><\/span><\/a><b>.<\/b><\/span><\/p>\n<p class=\"p1\"><i>The University of Maine is an EEO\/AA employer, and does not discriminate on the grounds of race, color, religion, sex, sexual orientation, transgender status, gender expression, national origin, citizenship status, age, disability, genetic information or veteran\u2019s status in employment, education, and all other programs and activities. The following person has been designated to handle inquiries regarding non-discrimination policies: Director of Equal Opportunity, 101 Boudreau Hall, University of Maine, Orono, ME 04469-5754, 207.581.1226, TTY 711 (Maine Relay System).<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prepared by Dr. Seanna Annis, Blueberry Pathologist, School of Biology and Ecology, University of Maine, Orono, ME, 04469. There is NO tested fungicide that will eradicate this disease from a field. Fungicides will only suppress the disease by protecting the plants.\u00a0 Once in a field, the fungus will produce new spores and infect plants after [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":18837,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-1254","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sanitation Protocol for Valdensinia Leaf-drop Disease - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/extension.umaine.edu\/blueberries\/resources\/disease\/sanitation-protocol-for-valdensinia-leaf-drop-disease\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sanitation Protocol for Valdensinia Leaf-drop Disease - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Prepared by Dr. Seanna Annis, Blueberry Pathologist, School of Biology and Ecology, University of Maine, Orono, ME, 04469. 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