8 April 2025

Historical Phenology and Average Degree Day Accumulation Base 43 (for reference)

- Silver Tip (McIntosh) || 58-106

- Green Tip (McIntosh) || 99-144

- Half Inch Green (McIntosh) || 150-201

- Tight Cluster (McIntosh) || 206-257

Phenology & DDs for NY NEWA Stations from 1/1 - 4/7

Station || Stage || DD 43F || DD 50F ||

Geneva (AgriTech North) || Green Tip || 151 || 64

Highland (HVRL) || Early TC || 186 || 76

Clifton Park || Green Tip || 125 || 53

Peru (Forrence) || Silver Tip || 103 || 47

Medina - Inland || First Green || 138 || 65

Appleton North - Lake || First Green || 105 || 48

Fairville (The Apple Shed) - Inland || First Green || 147 || 65

Williamson (DeMarree) - Lake || First Green || 136 || 61

*all DDs Baskerville-Emin, B.E

-----------------------------------------------------------------

Upcoming Pest Events

Pest/Phenology Event || DD Base 43˚F || Approx. Date

STLM Traps set out || 1-Apr

Pear psylla – egg laying || 84 ± 44 || 33 ± 21 || 4-Apr ± 11 days

RBLR – 1st catch || 144 ± 32 || 60 ± 20 || 17-Apr ± 9 days

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

*Base temperature for OFM 45F

Sprayer Calibration Videos

Jason Deveau, Sprayers101

Andrew Landers Part I

Andrew Landers Part II

Weather

Northeast Regional Climate Change Monthly Maps

NOAA Climate Prediction Center (forecasts and outlooks)

NEWA and Pest Forecasting

NEWA Help Desk Frequently Asked Questions

NEWA Help Desk Apple Insect, Disease, and Crop Management Forecasts

Quick Guide for Apple Insect Pests

Apple IPM Intensive Workshop playlist

Apple Insect Targets and IPM Practices

NY Tree Fruit Pest Monitoring Network

Interested in collaborating and contributing trap capture data? Contact Anna Wallis aew232@cornell.edu

Virtual Orchard Scout Training webinar

Online Course, BF224: Tree Fruit Scouting.

Cold Temperature and Frost Risk

Picture Table of Critical Spring Temperatures for Tree Fruit Bud Development Stages

Regional Weather Events page for NEWA weather stations,

Cornell Statewide Frost Protection webinar