8 July 2025

Historical Phenology and Average Degree Day Accumulation (from Table 7.1.4 in the Tree Fruit Guidelines)

Phenology & DDs for NY NEWA Stations from 1/1 – 7/7

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

Geneva (AgriTech North) || Fruit Sizing || 1823 || 1212

Highland (HVRL) || Fruit Sizing || 2049 || 1377

Clifton Park || Fruit Sizing || 1845 || 1226

Peru (Forrence) || Fruit Sizing || 1633 || 1053

Medina - Inland || Fruit Sizing || 1711 || 1121

Appleton North - Lake || Fruit Sizing || 1608 || 1038

Fairville (The Apple Shed) - Inland || Fruit Sizing || 1775 || 1182

Williamson (DeMarree) - Lake || Fruit Sizing || 1700 || 1108

*all DDs Baskerville-Emin, B.E

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Upcoming Pest Events

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

Dogwood borer – 1st adult catch || 964 ± 230 || 571 ± 151 || 12-Jun ± 9 days

American plum borer – 1st flight ending || 1344 ± 144 || 856 ± 111 || 29-Jun ± 7 days

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Apple Maggot Traps Set Out (in orchard) || 1-Jul

ERM Sample – 5.0 mites/leaf || 1-Jul

Comstock mealybug tape traps set out || July 1 (ENY), July 15 (WNY)

OFM – 2nd flight starting || 1180* ± 136* || 856 ± 106 || 29-Jun ± 5 days

OBLR Summer Gen. 1st Sample || 10-Jul ± 5 days

STLM Summer Gen. 1st Sample || 9-Jul ± 7 days

RBLR – 2nd flight starting || 1367 ± 105 || 866 ± 135 || 29-Jun ± 6 days

AM – 1st catch || 1509 ± 285 || 973 ± 206 || 4-Jul ± 12 days

Lesser peachtree borer – peak catch || 1234 ± 470 || 785 ± 338 || 25-Jun ± 19 days

STLM – 2nd flight peak || 1563 ± 207 || 1011 ± 163 || 6-Jul ± 8 days

Codling moth – 1st flight ending || 1557 ± 262 || 1011 ± 187 || 6-Jul ± 12 days

Peachtree borer – peak catch || 1579 ± 465 || 1036 ± 353 || 7-Jul ± 19 days

Lesser appleworm – 2nd flight starting || 1768 ± 339 || 1165 ± 240 || 14-Jul ± 12 days

OFM – 2nd flight peak || 1450* ± 147* || 1115 ± 190 || 11-Jul ± 9 days

American plum borer – 2nd flight starting || 1850 ± 290 || 1231 ± 203 || 16-Jul ± 11 days

RBLR – 2nd flight peak || 1721 ± 232 || 1129 ± 176 || 13-Jul ± 7 days

San Jose scale – 2nd flight starting || 1804 ± 170 || 1199 ± 136 || 15-Jul ± 8 days

Codling moth – 2nd flight starting || 1887 ± 313 || 1251 ± 223 || 20-Jul ± 13 days

Dogwood borer – peak catch || 1611 ± 226 || 1040 ± 172 || 8-Jul ± 10 days

STLM – 2nd flight ending || 2167 ± 177 || 1466 ± 151 || 28 Jul ± 8 days

American plum borer – 2nd flight peak || 2290 ± 285 || 1564 ± 213 || 1-Aug ± 8 days

OFM – 2nd flight ending || 2044* ± 233* || 1545 ± 195 || 31-Jul ± 7 days

*Base temperature for OFM 45F

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Resources

NOAA Storm Prediction Center & Severe Weather

https://www.spc.noaa.gov/climo/reports/250703_rpts.html

https://www.weather.gov/

Sunburn

Pest Monitoring Networks

NY Tree Fruit Pest Monitoring Network

NY Berry 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.

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