Apples
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.)
Sooty Blotch and Flyspect Risk and Forecasting
Sooty Blotch and Flyspeck Model
Seasonal Apple Leaf Wetness Log (per station)
Apple Insects
Apple Insect Phenology Models and IPM Forecasts
Insect | Base T |
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 Biofix Table
Pest | Base T | Biofix |
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 |
*Not Applicable
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.
Spotted Tentiform Leafminer (STLM)
Pink bud or early bloom stage scouting for STLM eggs(pdf)
Petal fall stage scouting for STLM sap-feeding mines (pdf)
Summer scouting for second generation STLM(pdf)
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)
Mites
2.5 mites/leaf threshold scouting in June (pdf)
5 mites/leaf threshold scouting in July (pdf)
7.5 mites/leaf threshold scouting August 1 to 15 (pdf)
Apple Maggot (AM) scouting form (pdf)
Scouting and Monitoring Summary 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.
Scaffolds: Fruit Journal Weekly extension newsletter produced by Art Agnello, Entomology Dept, Cornell University, Geneva, during the growing season. Contact Art Agnello for subscription information.
For more information on tree fruit pest management. Fruit IPM Resources