Apple Scab Disease Risk and Forecasting
Apple Scab Infection Events and Ascospore Maturity
Seasonal Apple Leaf Wetness Log (per station)
Fire Blight Disease Risk and Forecasting
Fire Blight Model
Information about Cougar Blight (Washington State Univ.)
|Codling Moth||50 F|
|Oriental Fruit Moth||45 F|
|Obliquebanded Leafroller||43 F|
|Plum Curculio||50 F
|Spotted Tentiform Leafminer||43 F|
|Apple Maggot||50 F|
|Apple Scab||32 F||50% Green Tip Mac's|
|Fire Blight||65 F||First Blossom Open|
|Sooty Blotch & Flyspeck||*NA||Estimate based on DD accumulations correlated with historical observations.|
|Codling Moth||50 F||First Sustained Trap Catch|
|Oriental Fruit Moth||45 F||First Sustained Trap Catch|
|Obliquebanded Leafroller 1st summer generation||43 F||First Sustained Trap Catch|
|Plum Curculio||50 F||Petal Fall|
|San Jose Scale||50 F||March 1|
|Spotted Tentiform Leafminer 2nd generation||43 F||First Sustained Trap Catch|
|Apple Maggot||50 F||January 1|
On-line Resources to Support Monitoring
Sampling Forms and Decision Support for Scouting and Monitoring Arthropod Pest
These are forms are also available in the Cornell Pest Management Guidelines for Commercial Tree Fruit Production to assist with scouting and monitoring for arthropod pests. They are linked here from the Fruit IPM web site.
Download Acrobat Reader to view pdf documents.
Obliquebanded Leafroller (OBLR)
Begin OBLR scouting on July 5 in WNY (5-7 days earlier in E NY or Long Island) or begin approximately 600 degree days Base 43 F after the first moth flight begins, first sustained moth catches in pheromone traps.
3% OBLR infestation threshold (pdf)
Apple Maggot (AM) scouting form (pdf)
For Further Information:
Fruit IPM Fact Sheets Information on many insect pests, mites, and diseases of tree fruit.
Pest Management Guidelines for Commercial Tree-Fruit Production contains the current year's tree fruit management information compiled by Cornell University extension faculty, including useful apple scab and fire blight information and scouting and monitoring forms for arthropod pests.
For more information on tree fruit pest management. Fruit IPM Resources