22 April 2025

This week's topics: Season Long Woolly Apple Aphid Management, Apple Scab Projections, Blossom Blight Management, and our State of the State Update! Historical Phenology and Average Degree Day Accumulation Base 43 (for reference) Tight cluster (McIntosh) || 228 ± 27 || 27-Apr ± 7 days Pink (McIntosh) || 289 ± 26 || 3-May ± 7 days Full bloom (McIntosh) || 378 ± 35 || 10-May ± 6 days Petal fall (McIntosh) || 479 ± 42 || 18-May ± 6 days Phenology & DDs for NY NEWA Stations from 1/1 - 4/21 Station || Stage || DD 43F || DD 50F || Geneva (AgriTech North) || Pink || 219 || 90 Highland (HVRL) || Pink || 282 || 134 Clifton Park || 1/2" Green || 206 || 95 Peru (Forrence) || Green Tip || 164 || 99 Medina - Inland || Tight Cluster || 203 || 80 Appleton North - Lake || Tight Cluster || 168 || 79 Fairville (The Apple Shed) - Inland || Tight Cluster || 214 || 100 Williamson (DeMarree) - Lake || Tight Cluster || 201 || 95 *all DDs Baskerville-Emin, B.E Upcoming Pest Events Pest/Phenology Event || DD Base 43˚F || Approx. Date Rosy apple aphid – 1st nymphs present || 189 ± 55 || 86 ± 30 || 25-Apr ± 7 days STLM – 1st adult catch || 168 ± 48 || 73 ± 28 || 20-Apr ± 9 days STLM – 1st egg observed || 208 ± 65 || 94 ± 36 || 27-Apr ± 5 days --- Tight cluster (McIntosh) || 228 ± 27 || 105 ± 19 || 27-Apr ± 7 days Tarnished plant bug – 1st observed || 222 ± 105 || 105 ± 62 || 25-Apr ± 15 days OBLR – 1st overwintered larvae observed || 236 ± 78 || 112 ± 48 || 29-Apr ± 7 days Black stem borer – 1st adult catch || 283 ± 50 || 137 ± 40 || 6-May ± 3 days European red mite – egg hatch observed || 284 ± 53 || 134 ± 34 || 6-May ± 4 days --- Pink (McIntosh) || 289 ± 26 || 139 ± 21 || 3-May ± 7 days Oriental fruit moth – 1st adult catch || 229* ± 44* || 126 ± 33 || 2-May ± 8 days RBLR – 1st flight peak || 303 ± 75 || 150 ± 48 || 4-May ± 9 days STLM – 1st flight peak || 337 ± 71 || 168 ± 45 || 7-May ± 8 days --- Full bloom (McIntosh) || 378 ± 35 || 192 ± 25 || 10-May ± 6 days "OBLR Overwintered Gen. Sample Codling Moth Traps set out *Base temperature for OFM 45F Sprayer Calibration Videos Jason Deveau, Sprayers101 https://sprayers101.com/articles/boom-sprayers/calibration/ Andrew Landers Part I https://www.youtube.com/watch?v=6izHj0GF1rY Andrew Landers Part II https://www.youtube.com/watch?v=eAfEIjwg5HI Weather Northeast Regional Climate Change Monthly Maps https://www.nrcc.cornell.edu/regional/monthly/monthly.html NOAA Climate Prediction Center (forecasts and outlooks) https://www.cpc.ncep.noaa.gov/products/forecasts/ NEWA and Pest Forecasting NEWA Help Desk Frequently Asked Questions https://help.nysipm.org/hc/en-us/categories/16994462926231-NEWA-Network-for-Environment-and-Weather-Applications NEWA Help Desk Apple Insect, Disease, and Crop Management Forecasts https://help.nysipm.org/hc/en-us/sections/17011505301783-Apple-Insect-Disease-and-Crop-Management-Forecasts Quick Guide for Apple Insect Pests https://help.nysipm.org/hc/en-us/articles/23290226665751-NEWA-Quick-Guide-for-Apple-Insect-Pests Apple IPM Intensive Workshop playlist: https://www.youtube.com/playlist?list=PLoNb8lODb49vifrm9Tla4GmAVhlIL0527 Apple Insect Targets and IPM Practices (including explanations of Degree Day calculations): https://youtu.be/NwyBAcvbpUs NY Tree Fruit Pest Monitoring Network https://blogs.cornell.edu/treefruitpests/ Interested in collaborating and contributing trap capture data? Contact Anna Wallis [email protected] Virtual Orchard Scout Training webinar recording on the New York State Integrated Pest Management Program (NYSIPM) YouTube channel. https://www.youtube.com/watch?v=OtyOWCL1Q2A Online Course, BF224: Tree Fruit Scouting. https://smallfarmcourses.com/p/bf-224-tree-fruit-scouting Cold Temperature and Frost Risk Picture Table of Critical Spring Temperatures for Tree Fruit Bud Development Stages https://www.canr.msu.edu/resources/picture-table-critical-spring-temperatures-for-tree-fruit-bud-development-stages