15 - 5 July 2023

This week our hosts include Monique Rivera, assistant professor of entomology at Cornell AgriTech; Kerik Cox, associate professor of plant pathology; and Anna Wallis, fruit IPM coordinator.

In this episode, Monique talks about timing sprays for woolly apple aphid, and describes the apple leaf curling midge - an emerging pest in NYS. Kerik describes the biology and identification of apple blotch (formerly Marssonina leaf blotch). Anna brings us her State of the State update on regional degree day accumulation, pest developments, and apple phenology. Recorded July 5 and released July 6, 2023.

_____________________

BASE 43F Phenology and DDs for NY NEWA Stations from 1/1-7/5

• Geneva || fruit sizing || 1589
• Highland HVRL || fruit sizing || 1866
• Clifton Park || fruit sizing || 1681
• Peru (Forrence) || fruit sizing || 1489
• Medina - Inland || fruit sizing || 1504
• Appleton North - Lake || fruit sizing || 1415
• Fairville (The Apple Shed) - Inland || fruit sizing || 1508
• Williamson (DeMarree) - Lake || fruit sizing || 1473

_____________________

BASE 43F Upcoming Pest Events: Average DDs (std)*

• Apple Maggot - set traps out: July 1
• ERM - sample 5 mites/leaf: July 1
• Comstock mealybug - set tape traps: July 1 ENY, July 15 WNY
• OFM - 2nd flight starting: 1180 (± 136)
• OBLR - summer gen. sample: approx. July 10
• STLM - summer gen. sample: approx. July 9
• RBLR - 2nd flight starting: 1367 (± 105)
• AM - 1st catch: 1509 (± 285)
• LPTB - peak catch: 1234 (± 470)
• STLM - 2nd flight peak: 1563 (± 207)
• CM - 1st flight ending: 1557 (± 262)
• Peachtree borer - peak catch: 1579 (± 465)
• Lesser appleworm - 2nd flight starting: 1768 (± 339)
• OFM - 2nd flight peak: 1450 (± 147)

_____________________

BASE 50F DDs for NY NEWA Stations from 1/1-7/5*

• Geneva || 1028
• Highland HVRL || 1189
• Clifton Park || 1084
• Peru (Forrence) || 952
• Medina - Inland || 957
• Appleton North - Lake || 880
• Fairville (The Apple Shed) - Inland || 967
• Williamson (DeMarree) - Lake || 928

_____________________

BASE 50F Upcoming Pest Events: Average DDs (std)*

• Obliquebanded Leafroller - 1st adult catch: 523 (± 62)
• Apple Maggot - set traps out: July 1
• ERM - sample 5 mites/leaf: July 1
• Comstock mealybug - set tape traps: July 1 ENY, July 15 WNY
• OFM - 2nd flight starting: 856 (± 106)
• OBLR - summer gen. sample: approx. July 10
• STLM - summer gen. sample: approx. July 9
• RBLR - 2nd flight starting: 866 (± 135)
• AM - 1st catch: 973 (± 206)
• LPTB - peak catch: 785 (± 338)
• STLM - 2nd flight peak: 1011 (± 163)
• CM - 1st flight ending: 1011 (± 187)
• Peachtree borer - peak catch: 1036 (± 353)
• Lesser appleworm - 2nd flight starting: 1165 (± 240)
• OFM - 2nd flight peak: 1115 (± 190)

_____________________

*All DDs Baskerville-Emin, B.E.

LINKS

• ENYCHP webinar on leaf curling midge: https://www.youtube.com/watch?v=bnSqoYIj7kk
• NOAA storm prediction: ⁠https://www.spc.noaa.gov/⁠
• Northeast Regional Climate Center (NRCC): http://www.nrcc.cornell.edu/
• Cox Lab blog: ⁠⁠⁠https://blogs.cornell.edu/coxlab/⁠⁠⁠
• Cox Lab twitter: @fruitpathology
• Monique Rivera twitter: @moniquejrivera
• Anna Wallis twitter: @jesuisunanana