{"id":10026,"date":"2014-05-21T10:04:21","date_gmt":"2014-05-21T14:04:21","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/?p=10026"},"modified":"2020-04-15T12:34:02","modified_gmt":"2020-04-15T16:34:02","slug":"mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21","status":"publish","type":"post","link":"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/","title":{"rendered":"5.21.14 Mummy Berry Infection and Botrytis Blossom Blight"},"content":{"rendered":"

Knox, Lincoln and Waldo Counties<\/strong><\/h3>\n

Botrytis Blossom Blight<\/strong><\/h4>\n

This is the time of year to scout for Botrytis blossom blight on early blooming blueberry clones.\u00a0 Look at dead open flowers, and any dead or dying tissue (leaves or flowers) you see on weeds near or in your fields.\u00a0 The symptoms are dead, open, flowers with black hairs sticking out of them. You will probably need a magnifying glass or hand lens to see the hairs. Your flowers may also be killed by mummy berry disease, which will not have the black hairs sticking out of the dead tissue. If you do have Botrytis in your field and are getting a lot of bloom, this wet weather over the next week may cause infections by this fungus.\u00a0 It is only worthwhile to apply fungicides for Botrytis blossom blight if you are sure you have this disease in your field.\u00a0 If you do not have this fungus in your field, no matter how much wet weather you get during bloom you will not get Botrytis disease.\u00a0 Be careful to protect pollinators if you do have to spray for this disease, spray when pollinators are not in the field.<\/p>\n

Hancock and Washington Counties<\/strong><\/h3>\n

Mummy Berry Disease<\/strong><\/h4>\n

There were mature spore-producing cups found in a few plots around the barrens on Tuesday.\u00a0 Most locations the cups were drying up. I expect there are still a few cups around in the barrens and they will be finishing up this week.\u00a0 If you have a later or wetter field there is a chance you may have had infection periods in the past few days. Infection periods occurred overnight on Monday, May 19 and Tuesday, May 20 (please see chart below). Wet weather is expected to continue the end of this week.<\/p>\n

Infection Periods and Fungicide Applications<\/strong><\/h4>\n

Your fungicide application should protect your plants for about seven to ten days.\u00a0 With heavy rainfall, there may be a bit shorter protection than ten days. With the infection periods in the last two days, you have until about three days from the start of the infection to treat your plants to protect them.<\/p>\n

If you would be applying a second application of propiconazole, it would be a good idea to switch to a different fungicide with a different mode of action to help prevent resistance to propiconazole developing in your field (Please see the 2014 Maine Wild Blueberry Pesticide Chart, Fungicides (PDF)). Other fungicides should be applied as protectants and before infection periods occur.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Locations<\/strong><\/td>\nInfection period starting Monday,
\nMay 19<\/strong><\/td>\n		Infection period starting Tuesday,
\nMay 20<\/strong><\/td>\n<\/tr>\n<\/thead>\n
Dresden Mills<\/td>\nlikely none<\/td>\nlikely none<\/td>\n<\/tr>\n
West Rockport<\/td>\nlikely none<\/td>\nlikely none<\/td>\n<\/tr>\n
Appleton<\/td>\nlikely none<\/td>\nlikely none<\/td>\n<\/tr>\n
Belfast<\/td>\nlikely none<\/td>\nlikely none<\/td>\n<\/tr>\n
Sedgwick<\/td>\n10:00 a.m.<\/td>\n3:40 p.m.<\/td>\n<\/tr>\n
North Ellsworth<\/td>\ncontinued from Sunday, May 18<\/td>\n1:40 p.m.<\/td>\n<\/tr>\n
Eastbrook\/Waltham<\/td>\n5:40 p.m.<\/td>\n6:20 p.m.<\/td>\n<\/tr>\n
Deblois<\/td>\nstation down<\/td>\nstation down<\/td>\n<\/tr>\n
Cherryfield<\/td>\n4:40 p.m.<\/td>\n4:00 p.m.<\/td>\n<\/tr>\n
Jonesboro<\/td>\n3:45 p.m.<\/td>\n7:45 p.m.<\/td>\n<\/tr>\n
Wesley<\/td>\n2:40 p.m.<\/td>\n6:40 p.m.<\/td>\n<\/tr>\n
East Machias\/Whiting<\/td>\n4:00 p.m.<\/td>\n6:00 p.m.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Knox, Lincoln and Waldo Counties Botrytis Blossom Blight This is the time of year to scout for Botrytis blossom blight on early blooming blueberry clones.\u00a0 Look at dead open flowers, and any dead or dying tissue (leaves or flowers) you see on weeds near or in your fields.\u00a0 The symptoms are dead, open, flowers with […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","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":""},"categories":[134,2,4,5],"tags":[],"class_list":["post-10026","post","type-post","status-publish","format-standard","hentry","category-134","category-news","category-mummyberry","category-other-diseases-2"],"yoast_head":"\n5.21.14 Mummy Berry Infection and Botrytis Blossom Blight - 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\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5.21.14 Mummy Berry Infection and Botrytis Blossom Blight - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Knox, Lincoln and Waldo Counties Botrytis Blossom Blight This is the time of year to scout for Botrytis blossom blight on early blooming blueberry clones.\u00a0 Look at dead open flowers, and any dead or dying tissue (leaves or flowers) you see on weeds near or in your fields.\u00a0 The symptoms are dead, open, flowers with […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\" \/>\n<meta property=\"og:site_name\" content=\"Cooperative Extension: Maine Wild Blueberries\" \/>\n<meta property=\"article:published_time\" content=\"2014-05-21T14:04:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-04-15T16:34:02+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"5.21.14 Mummy Berry Infection and Botrytis Blossom Blight\",\"datePublished\":\"2014-05-21T14:04:21+00:00\",\"dateModified\":\"2020-04-15T16:34:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\"},\"wordCount\":498,\"articleSection\":[\"2014\",\"General News\",\"Mummy Berry\",\"other diseases\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\",\"url\":\"https:\/\/extension.umaine.edu\/blueberries\/2014\/05\/21\/mummy-berry-infection-and-botrytis-blossom-blight-wed-may-21\/\",\"name\":\"5.21.14 Mummy Berry Infection and Botrytis Blossom Blight - 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