{"id":21119,"date":"2020-06-01T15:19:20","date_gmt":"2020-06-01T19:19:20","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/?p=21119"},"modified":"2021-04-16T16:13:00","modified_gmt":"2021-04-16T20:13:00","slug":"frost-and-botrytis-risk-from-may-23rd-to-june-1st","status":"publish","type":"post","link":"https:\/\/extension.umaine.edu\/blueberries\/2020\/06\/01\/frost-and-botrytis-risk-from-may-23rd-to-june-1st\/","title":{"rendered":"6.01.20 Frost and Botrytis risk from May 23rd to June 1st"},"content":{"rendered":"

Possible Frost<\/strong><\/p>\n

There were possible frost conditions in most fields from Saturday May 23rd to 24th and Sunday May 31st to June 1st.\u00a0 Some fields also had frost conditions Sunday May 24th to Monday May 25th.\u00a0 Temperatures below 30F can cause some damage but temperatures below 28F are associated with yield loss.\u00a0\u00a0 The table below shows the possible frost conditions with length of time when temperatures were below 35F and the lowest temperature recorded at each weather station.\u00a0\u00a0 I have chosen to report temperatures below 35F since there will have been colder or warmer areas around the weather station.<\/p>\n

Possible Botrytis<\/strong><\/p>\n

There was also the risk of Botrytis infection with wet conditions over the past few nights.\u00a0 Fields experienced one to three nights of possible Botrytis infection conditions if there already were Botrytis infections in the field to cause further infections.\u00a0 Botrytis is not a\u00a0 yearly problem in most Maine blueberry fields.\u00a0 Botrytis can destroy blossoms and causes more damage with warmer conditions after\u00a0 infection. Botrytis symptoms are dead blossoms with black hairs sticking out.\u00a0 Blossoms can also be killed by mummy berry or cold temperatures.<\/p>\n

The table below<\/strong> shows the possible frost conditions with length of time when temperatures were below 35F and the lowest temperature recorded. The Botrytis risk shows level of risk of infection, if Botrytis was already in a field, over the past week.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Location<\/strong><\/td>\nFrost May 23 to May 24\u00a0<\/strong><\/td>\nFrost May 24 to May 25<\/strong><\/td>\nFrost May 31 to June 1<\/strong><\/td>\nBotrytis risk May 27 to May 30\u00a0<\/strong><\/td>\n<\/tr>\n
Brunswick<\/td>\n8.5hr, 23.5F<\/td>\n7hr,\u00a0 27.5F<\/td>\n5hr, 20.3F<\/td>\nmoderate<\/td>\n<\/tr>\n
Waldoboro<\/td>\n3hr, 34.2F<\/td>\nnot below 35F<\/td>\n7hr, 29.7F<\/td>\nmoderate<\/td>\n<\/tr>\n
West Rockport<\/td>\n1hr, 34.4F<\/td>\nnot below 35F<\/td>\nnone, 35.6F<\/td>\nhigh<\/td>\n<\/tr>\n
Hope\/Appleton<\/td>\n6hr, 31.3F<\/td>\nnot below 35F<\/td>\n6.5hr, 30.9F<\/td>\nhigh<\/td>\n<\/tr>\n
Searsport<\/td>\nnot below 35F<\/td>\nnot below 35F<\/td>\n4hr,\u00a0 33.2F<\/td>\nhigh<\/td>\n<\/tr>\n
Bluehill<\/td>\n6hr, 25.4F<\/td>\n7hr, 29.7F<\/td>\n5.5 hr, 27.7F<\/td>\nlow<\/td>\n<\/tr>\n
Ellsworth\/Hancock<\/td>\n2hr, 27.6F<\/td>\n1hr, 32.2F<\/td>\n5hr, 30.4F<\/td>\nmoderate<\/td>\n<\/tr>\n
Aurora<\/td>\n7hr, 27.5F<\/td>\n4hr, 30.4F<\/td>\n7hr, 28.4F<\/td>\nmoderate<\/td>\n<\/tr>\n
Eastbrook<\/td>\n4hr, 31.8F<\/td>\nnot below 35F<\/td>\n3.5hr 30.2F<\/td>\nhigh<\/td>\n<\/tr>\n
Gouldsboro<\/td>\n7hr, 30.9F<\/td>\n7.5hr, 30.6F<\/td>\n1hr, 34.3F<\/td>\nhigh<\/td>\n<\/tr>\n
Deblois\/Airport<\/td>\n8.5hr, 22.9F<\/td>\n6hr, 26.6F<\/td>\n3hr, 29.4F<\/td>\nhigh<\/td>\n<\/tr>\n
Montegail<\/td>\n7hr, 27.6F<\/td>\n6hr, 31F<\/td>\n3hr, 28.3F<\/td>\nhigh<\/td>\n<\/tr>\n
Jonesboro<\/td>\n2hr, 33F<\/td>\nnot below 35F<\/td>\n3hr , 30F<\/td>\nmoderate<\/td>\n<\/tr>\n
Whiting<\/td>\nProbably, data missing overnight<\/td>\nprobably,<\/p>\n

data missing<\/td>\n

high<\/td>\n<\/tr>\n
Crawford\/Love Lake<\/td>\n1hr, 33.7F<\/td>\nnot below 35F<\/td>\n2hr, 32.1F<\/td>\nmoderate<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Please let me know if you have any questions, Seanna Annis.<\/p>\n","protected":false},"excerpt":{"rendered":"

Possible Frost There were possible frost conditions in most fields from Saturday May 23rd to 24th and Sunday May 31st to June 1st.\u00a0 Some fields also had frost conditions Sunday May 24th to Monday May 25th.\u00a0 Temperatures below 30F can cause some damage but temperatures below 28F are associated with yield loss.\u00a0\u00a0 The table below […]<\/p>\n","protected":false},"author":117,"featured_media":0,"comment_status":"closed","ping_status":"open","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":[128,85,5],"tags":[],"class_list":["post-21119","post","type-post","status-publish","format-standard","hentry","category-128","category-frost","category-other-diseases-2"],"yoast_head":"\n6.01.20 Frost and Botrytis risk from May 23rd to June 1st - 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