Weekly Report 5/20/24

Each week we’ll provide a short summary of trap captures and pest activity in orchards from across NY State. Look for more detail and regionally specific management recommendations from your local CCE and regional teams.

Across the state warm weather is moving phenology and degree days well ahead of 15 and 30 year averages, according to regional specialists’ updates and the Climate Smart Farming Tool Degree Day Calculator created by Cornell.

Visit the Dynamic map on the home page to see insect activity for specific regions, locations, or dates.

Oriental Fruit Moth (OFM)

Where a considerable population of OFM is present, the biofix was recorded for OFM late April or early May. However, not all sites have trap captures, emphasizing the importance of site-specific managemetn. The biofix is set after sustained trap capture is recorded (at least two consecutive weeks of trap captures). Use the initial date of these first two weeks in a row for the biofix in the NEWA model. Larval emergence will begin at approximately 200-250 DD Base 50 after the biofix.

• Geneva-AgriTech – First capture: April 29 & Sustained Capture: May 6
• Highland-HVRL – First capture: April 22 & Sustained Capture: April 29

Codling Moth (CM)

Trap captures are beginning to be recorded in many locations across NY. The biofix was set at both research stations where data is being collected. In many other locations CM has not yet been captured and/or sustained capture has not been reached. The biofix for this insect is also the first sustained trap capture, and the first trap capture in the two consecutive weeks should be used in the NEWA model.

• Geneva-AgriTech – First capture: May 6 & Sustained Capture: May 13
• Highland-HVRL – First capture: May 6 & Sustained Capture: May 13

Obliquebanded Leafroller (OBLR)

First captures were reported in Washington County last week (2 moths on May 13), and in Geneva at Cornell AgriTech this week (1 moth on May 20). No other captures have been reported throughout the state. Petal fall is a good time to be thinking about putting out traps for this insect. Average OBLR 1st adult trap capture for Geneva is: 884 ± 90 DD Base 43 or 523 ± 62 DD Base 50, with an average date of 9-Jun ± 6 days. This is much earlier (nearly two weeks) than averages recorded for Geneva.

Dogwood Borer (DWB)

First trap capture (5 adults) were reported for Geneva, Cornell AgriTech on May 20. This is nearly 2 weeks earlier than usual. Average degree day accumulation for Dogwood Borer 1st adult catch is: 964 ± 230 DD43 or 571 ± 151 DD50, with an average date of 12-Jun ± 9 days. More evidence that this season is much earlier than usual for Western NY.

Data for OFM, CM, and OBLR for all locations reporting data are shared below, thank you to all participating collaborators! In addition, tables for degree day accumulations in the season to date are shared.  Upcoming phenology and pest events are also reported, based on Table 7.1.4 from the Cornell Tree Fruit Guidelines.

Oriental Fruit Moth (OFM) Captures per Week

Codling Moth (CM) Trap Captures per Week

Obliquebanded Leafroller (OBLR) Trap Captures per Week

Phenology & Degree Day Accumulations for NY NEWA Stations from 1/1 -5/20

Upcoming Phenology & Pest Events

Reference: Table 7.1.4. Degree-day accumulations (from Jan. 1) corresponding to selected fruit phenology and arthropod pest events. Cornell Tree Fruit Guidelines.