06 - 2 May 2023

Welcome to Scaffolds Podcast, a weekly roundup of the timely updates on insect and disease management as well as phenological developments across New York State for apple growers.

This week we are joined by Monique Rivera, assistant professor of entomology at Cornell AgriTech; Kerik Cox, associate professor of plant pathology; Līga Astra Kalniņa, Cox Lab graduate student; and Anna Wallis, Fruit IPM Coordinator.

In this episode, Monique talks about chemigation and gives an update on black stem borer. Kerik and Līga give the latest disease forecast, and Anna brings us the latest phenology from around the state. Recorded May 2 and released May 3, 2023.

Phenology and DDs (43F) for NY NEWA Stations from 1/1-5/2*

• Geneva || Late Pink / Early King Bloom || 340
• Highland HVRL || Late Bloom / Petal Fall || 515
• Clifton Park || Late Pink / Early King Bloom || 375
• Peru (Forrence) || Pink || 264
• Medina - Inland || Late Pink / Early King Bloom || 291
• Appleton North - Lake || Late Pink / Early King Bloom || 251
• Fairville (The Apple Shed) - Inland || Late Pink / Early King Bloom || 323
• Williamson (DeMarree) - Lake || Late Pink / Early King Bloom || 291

Upcoming Pest Events: DDs (43F) Ranges (avg +/- std)*

• Comstock mealy bug nymphs: 215-441
• European red mite egg hatch: 231-337
• Green fruitworm flight subsides: 496-528
• Lesser appleworm first catch: 276-564
• Obliquebanded leafroller larvae active: 158-314
• Oriental fruit moth first catch: 220-320
• Pear psylla first egg hatch: 174-328
• Predator mites present: 211-402
• Redbanded leafroller first peak flight: 231-380
• Rose leafhopper nymphs on multiflora rose: 239-397
• Spotted tentiform leafminer first flight: 265-403

*All DDs Baskerville-Emin, B.E.

Links

• Apple IPM Intensive Workshop playlist: https://www.youtube.com/playlist?list=PLoNb8lODb49vifrm9Tla4GmAVhlIL0527
• Apple Insect Targets and IPM Practices (including explanations of Degree Day calculations): https://youtu.be/NwyBAcvbpUs
• NEWA Weather Tools: https://newa.cornell.edu/weather-tools
• NEWA DD Calculator: https://newa.cornell.edu/degree-day-calculator
• CSF DD Calculator: http://climatesmartfarming.org/tools/csf-growing-degree-day-calculator/
• Cox Lab blog: https://blogs.cornell.edu/coxlab/
• Cox Lab twitter: @fruitpathology
• Monique Rivera twitter: @moniquejrivera
• Anna Wallis twitter: @jesuisunanana