{"id":2982,"date":"2015-05-04T12:22:13","date_gmt":"2015-05-04T16:22:13","guid":{"rendered":"http:\/\/blog.uvm.edu\/hoppenin\/?p=2982"},"modified":"2015-05-04T14:07:16","modified_gmt":"2015-05-04T18:07:16","slug":"spring-crowning","status":"publish","type":"post","link":"https:\/\/blog.uvm.edu\/hoppenin\/2015\/05\/04\/spring-crowning\/","title":{"rendered":"Spring Crowning"},"content":{"rendered":"

The hop season is upon us!<\/p>\n

Hop downy mildew is\u00a0currently the\u00a0biggest pest of concern for Northeastern hop growers. \u00a0Downy mildew overwinters in the hop crown and primary inoculum will be released from the first shoots. Removal of the first flush of spring hop growth\u00a0is called “scratching” or “crowning” depending on how far down a plant is cut. Shoot removal is used as an early season preventative measure against downy mildew and\u00a0as a way of managing\u00a0harvest time.\u00a0\u00a0Hop plants have been budding out for a few weeks now in Vermont.<\/p>\n

1st \u00a0year hop yards should not be crowned to allow for root establishment.<\/p>\n

2nd\u00a0year hop\u00a0yards should be crowned if downy mildew was a problem last season.<\/p>\n

3rd\u00a0year hop\u00a0yards should be crowned.<\/p>\n

One of the following three methods can be used to kill back the top 1\/2-1 inch of each plant.<\/p>\n

1. Mechanically cutting (Figures 1 and 2).<\/p>\n

2. Flaming. It has been DRY so please be careful not to burn down your hop yard.<\/p>\n

3. Herbicide application. Make sure any pesticide used in your hop yard is labeled for use in your state and on hops.<\/p>\n

The goal of crowning is to manage disease but also to\u00a0make\u00a0vegetative and reproductive growth\u00a0consistent across the yard and\u00a0from season to season.\u00a0\u00a0In our 2014 crowning date study<\/a> we found that there was no difference in hop quality or yield between plants cut back\u00a0on April 14th\u00a0and May 12th. Hop plants cut back\u00a0by 5\/9\u00a0will be able to\u00a0reach the top of the trellis by June 21 when the plants enter their reproductive growth stage, assuming the plants have sun, water, and nutrients.<\/p>\n

\"Buds<\/a>
Buds before mechanical crowning.<\/figcaption><\/figure>\n
\"after\"<\/a>
Plant after mechanical crowning.<\/figcaption><\/figure>\n

In this video<\/a>,\u00a0Dr. Heather Darby describes what downy mildew is, and some warning signs to look for when evaluating your hop plants.<\/p>\n

Good luck!<\/p>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

The hop season is upon us! Hop downy mildew is\u00a0currently the\u00a0biggest pest of concern for Northeastern hop growers. \u00a0Downy mildew overwinters in the hop crown and primary inoculum will be released from the first shoots. Removal of the first flush of spring hop growth\u00a0is called “scratching” or “crowning” depending on how far down a plant … <\/p>\n

Continue reading “Spring Crowning”<\/span><\/a><\/p>\n","protected":false},"author":1000,"featured_media":0,"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,"footnotes":""},"categories":[],"tags":[56152,15966,36691,36684,36680],"class_list":["post-2982","post","type-post","status-publish","format-standard","hentry","tag-crowning","tag-disease","tag-downy-mildew","tag-hop","tag-whats-hoppening","entry"],"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"hoppenin","author_link":"https:\/\/blog.uvm.edu\/hoppenin\/author\/hoppenin\/"},"_links":{"self":[{"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/posts\/2982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/users\/1000"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/comments?post=2982"}],"version-history":[{"count":3,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/posts\/2982\/revisions"}],"predecessor-version":[{"id":2987,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/posts\/2982\/revisions\/2987"}],"wp:attachment":[{"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/media?parent=2982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/categories?post=2982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.uvm.edu\/hoppenin\/wp-json\/wp\/v2\/tags?post=2982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}