13 May 2025

State of the State

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

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 - 5/12

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

Geneva (AgriTech North) || Petal Fall || 505 || 268

Highland (HVRL) || 4-5mm || 672 || 379

Clifton Park || Petal Fall || 522 || 282

Peru (Forrence) || Bloom || 408 || 199

Medina - Inland || Bloom/Petal Fall || 441 || 226

Appleton North - Lake || Bloom/Petal Fall || 361 || 171

Fairville (The Apple Shed) - Inland || Bloom/Petal Fall || 469 || 247

Williamson (DeMarree) - Lake || Bloom/Petal Fall || 412 || 201

*all DDs Baskerville-Emin, B.E

Upcoming Pest Events

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

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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

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Full bloom (McIntosh) || 378 ± 35 || 192 ± 25 || 10-May ± 6 days

OBLR Overwintered Gen. Sample

Codling Moth Traps set out

Lesser appleworm – 1st catch || 420 ± 144 || 217 ± 88 || 13-May ± 12 days

American plum borer – 1st catch || 457 ± 64 || 240 ± 45 || 16-May ± 7 days

OFM – 1st flight peak || 369* ± 91* || 223 ± 57 || 15-May ± 11 days

Codling moth – 1st adult catch || 475 ± 85 || 249 ± 55 || 18-May ± 7 days

San Jose scale – 1st adult catch || 533 ± 88 || 284 ± 61 || 21-May ± 8 days

Cherry fruit fly traps set out || 20-May

STLM – 1st sap-feeding mines observed || 472 ± 129 || 241 ± 76 || 18-May ± 13 days

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Petal fall (McIntosh) || 479 ± 42 || 252 ± 32 || 18-May ± 6 days

Lesser appleworm – 1st flight peak || 569 ± 205 || 313 ± 130 || 22-May ± 13 days

Plum curculio – 1st oviposition scars observed || 555 ± 77 || 286 ± 37 || 25-May ± 9 days

Pear psylla – hardshell stage observed || 569 ± 87 || 312 ± 51 || 22-May ± 9 days

Lesser peachtree borer – 1st adult catch || 570 ± 94 || 308 ± 59 || 24-May ± 8 days

San Jose scale – 1st flight peak || 644 ± 89 || 355 ± 58 || 29-May ± 8 days

*Base temperature for OFM 45F

NY Tree Fruit Pest Monitoring Network

https://blogs.cornell.edu/treefruitpests/

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

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

Petal Fall & Thinning Meetings

• Capital Region Virtual Petal Fall Recording https://blogs.cornell.edu/enychp/tree-fruit/apples/2025-capital-region-petal-fall-thinning-meeting-summary/

• HV South, Tuesday 5/13 9AM – Weed Orchards Farm Winery & Café, 43 Mt. Zion Rd., Milton

• HV North, Tuesday 5/13 2:30PM – CCE Hudson Office, 479 NY-66, Hudson

• WNY Wayne County, Thursday 5/15 2PM – Cherry Lawn Fruit Farm, 8130 Glover Rd, Sodus

• WNY Orleans County, Friday 5/16 2PM – Lamont Fruit Farms, 12703 Stillwater Rd, Waterport

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