{"id":1105,"date":"2018-07-19T10:31:28","date_gmt":"2018-07-19T14:31:28","guid":{"rendered":"http:\/\/blog.uvm.edu\/fruit\/2018\/07\/19\/amf-midsummer-orchard-management\/"},"modified":"2018-07-19T10:31:28","modified_gmt":"2018-07-19T14:31:28","slug":"amf-midsummer-orchard-management","status":"publish","type":"post","link":"https:\/\/blog.uvm.edu\/fruit\/2018\/07\/19\/amf-midsummer-orchard-management\/","title":{"rendered":"AMF, midsummer orchard management"},"content":{"rendered":"

By Terence Bradshaw<\/a><\/p>\n

Despite localized rains early this week, it\u2019s still really dry out there. That means running irrigation if you can, and considering what it will take to get it in the future because I expect we\u2019ll be seeing more of these extreme dry summers. That also means that summer diseases haven\u2019t been much of a concern. But wet weather is expected for next week and may be enough to trigger infection of sooty blotch\/flyspeck or summer rots. It may be worth thinking about your (first?) summer fungicide in the next week or so.<\/p>\n

While you\u2019re thinking about coverage in the orchard, the main target to consider should be apple maggot (AMF). We\u2019ve seen very high numbers in virtually all monitored orchards in Vermont and colleagues to the east, west, and south (and I wouldn\u2019t be surprised about the north) are saying the same thing. Of course, use trap catches on your farm to guide management of this pest, but I expect that many will be treating (and maybe re-treating). Codling moth (CM) remains between generations for all Vermont orchards, and applications aimed at AMF, as long as the material has some efficacy against CM, will take care of any stragglers. CM trap captures are high in most monitored orchards would plan to treat with a CM-specific material like Rimon, Intrepid, Delegate, granulosis virus, or other material with high activity against lepidopterans (except Bt, which isn\u2019t very effective against CM) in the next 7-14 days. Check NEWA<\/a> for insect model development.<\/p>\n

Horticulture: add calcium in every spray, the lack of water will certainly be minimizing uptake from the soil. If you haven\u2019t yet, consider applying potassium fertilizers based on foliar or soil analysis (foliar preferred). If you don\u2019t have a previous foliar analysis, figure on a rate of 50 lbs actual potassium per acre as a rule of thumb.<\/p>\n

On the topic of foliar nutrient analysis \u2013 It is the time in the growing season to collect leaf samples for analysis. Samples are usually collected between July 15 \u2013 Aug. 15. The UVM Agriculture and Environmental Testing Lab can provide analysis, but at this time their output does not generate fertility recommendations. The following are potential options of labs for analysis. It is recommended that you contact the lab for instructions and costs before samples are sent. Plus, it is important to confirm that they will send recommendations along with the analysis.<\/p>\n

(1) University of Maine Analytical Lab: http:\/\/anlab.umesci.maine.edu\/<\/a>
\n(2) University of Massachusetts Soil and Tissue Testing Lab: http:\/\/www.umass.edu\/plsoils\/soiltest\/<\/a>
\n(3) Cornell Nutrient Analysis Lab: http:\/\/cnal.cals.cornell.edu\/<\/a><\/p>\n

Finally, terminal buds have set on most trees so you can think about summer pruning any time. Remember, you\u2019re only looking to get some light into the canopy and onto fruit, not to reshape the tree. Judicious trimming mostly of this year\u2019s watersprouts is most all that you\u2019ll need. I tell my help to spend no more than 1-2 minutes on an M7 tree.<\/p>\n

Where trade names or commercial products are used for identification,<\/p>\n

no discrimination is intended and no endorsement is implied.<\/p>\n

Always read the label before using any pesticide.<\/p>\n

The label is the legal document for the product use.<\/p>\n

Disregard any information in this message if it is in conflict with the<\/p>\n

label.<\/p>\n

The UVM Tree Fruit and Viticulture Program is supported by the<\/p>\n

University of Vermont Agriculture Experiment Station, a USDA NIFA E-IPM<\/p>\n

Grant, and USDA Risk Management Agency Funds.<\/p>\n","protected":false},"excerpt":{"rendered":"

By Terence Bradshaw Despite localized rains early this week, it\u2019s still really dry out there. That means running irrigation if you can, and considering what it will take to get it in the future because I expect we\u2019ll be seeing more of these extreme dry summers. That also means that summer diseases haven\u2019t been much … Continue reading AMF, midsummer orchard management<\/span><\/a><\/p>\n","protected":false},"author":2068,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[],"tags":[36708,107009],"class_list":["post-1105","post","type-post","status-publish","format-standard","hentry","tag-ipm","tag-tree-fruit"],"jetpack_publicize_connections":[],"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"fruit","author_link":"https:\/\/blog.uvm.edu\/fruit\/author\/fruit\/"},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4nZlV-hP","_links":{"self":[{"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/posts\/1105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/users\/2068"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/comments?post=1105"}],"version-history":[{"count":0,"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/posts\/1105\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/media?parent=1105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/categories?post=1105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.uvm.edu\/fruit\/wp-json\/wp\/v2\/tags?post=1105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}