29 April 2025

Dr. Bryan Danforth contact: [email protected] Phenology and Average Degree Day Accumulation Base 43 (for reference)Tight cluster (McIntosh) || 228 ± 27 || 27-Apr ± 7 daysPink (McIntosh) || 289 ± 26 || 3-May ± 7 daysFull bloom (McIntosh) || 378 ± 35 || 10-May ± 6 daysPetal fall (McIntosh) || 479 ± 42 || 18-May ± 6 days ----------------------------------------------------------------Phenology & DDs for NY NEWA Stations from 1/1 - 4/28Station || Stage || DD 43F || DD 50F ||Geneva (AgriTech North) || Pink to bloom || 315 || 155Highland (HVRL) || Bloom || 416 || 215Clifton Park || Pink || 304 || 154Peru (Forrence) || Tight Cluster || 234 || 107Medina - Inland || Pink || 283 || 141Appleton North - Lake || Pink || 227 || 105Fairville (The Apple Shed) - Inland || Pink || 299 || 148Williamson (DeMarree) - Lake  || Pink || 268 || 126*all DDs Baskerville-Emin, B.E -----------------------------------------------------------------Upcoming Pest EventsPest/Phenology Event || DD Base 43˚F || Approx. DateTight cluster (McIntosh) || 228 ± 27 || 105 ± 19 || 27-Apr ± 7 daysTarnished plant bug – 1st observed || 222 ± 105 || 105 ± 62 || 25-Apr ± 15 daysOBLR – 1st overwintered larvae observed || 236 ± 78 || 112 ± 48 || 29-Apr ± 7 daysBlack stem borer – 1st adult catch || 283 ± 50 || 137 ± 40 || 6-May ± 3 daysEuropean red mite – egg hatch observed || 284 ± 53 || 134 ± 34 || 6-May ± 4 days----------------------------------------------------------------Pink (McIntosh) || 289 ± 26 || 139 ± 21 || 3-May ± 7 daysOriental fruit moth – 1st adult catch || 229* ± 44* || 126 ± 33 || 2-May ± 8 daysRBLR – 1st flight peak || 303 ± 75 || 150 ± 48 || 4-May ± 9 daysSTLM – 1st flight peak || 337 ± 71 || 168 ± 45 || 7-May ± 8 days-----------------------------------------------------------------Full bloom (McIntosh) || 378 ± 35 || 192 ± 25 || 10-May ± 6 daysOBLR Overwintered Gen. SampleCodling Moth Traps set outLesser appleworm – 1st catch || 420 ± 144 || 217 ± 88 || 13-May ± 12 daysAmerican plum borer – 1st catch || 457 ± 64 || 240 ± 45 || 16-May ± 7 daysOFM – 1st flight peak || 369* ± 91* || 223 ± 57 || 15-May ± 11 daysCodling moth – 1st adult catch || 475 ± 85 || 249 ± 55 || 18-May ± 7 daysSan Jose scale – 1st adult catch || 533 ± 88 || 284 ± 61 || 21-May ± 8 daysCherry fruit fly traps set out || 20-MaySTLM – 1st sap-feeding mines observed || 472 ± 129 || 241 ± 76 || 18-May ± 13 daysPetal fall (McIntosh) || 479 ± 42 || 252 ± 32 || 18-May ± 6 days*Base temperature for OFM 45FWeatherNRCC State MapsClimate Prediction Center - Forecasts & Outlook Maps, Graphs and tablesNEWA and Pest ForecastingNEWA Help Desk Frequently Asked QuestionsNEWA Help Desk Apple Insect, Disease, and Crop Management ForecastsQuick Guide for Apple Insect Pests Apple IPM Intensive Workshop playlist: Apple Insect Targets and IPM Practices  NY Tree Fruit Pest Monitoring Networkhttps://blogs.cornell.edu/treefruitpests/Interested in collaborating and contributing trap capture data? Contact Anna Wallis [email protected] Orchard IPM Scout TrainingBF 224: Tree Fruit Scouting | Cornell Small Farms ProgramCold Temperature and Frost RiskPicture Table of Critical Spring Temperatures for Tree Fruit Bud Development Stages Regional Weather Events page for NEWA weather stationsCornell Statewide Frost Protection webinar  Pre-emergent HerbicidesSpring Orchard Pre-Emergent Herbicides – CCE Eastern NY Commercial Horticulture Program