Welcome to the NEWA Apple Home Page

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
Fire Blight Susceptible Cultivars and Rootstocks
Information about Cougar Blight (Washington State Univ.)

Sooty Blotch and Flyspeck Risk and Forecasting
Sooty Blotch and Flyspeck Model
Seasonal Apple Leaf Wetness Log (per station)

Apple Insects
Apple Insect Phenology Models and IPM Forecasts

The following pest phenological models are covered:
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
San Jose Scale 50 F


Apple Biofix Table
Important Biofix Dates to Track
Pest Base T Biofix
Apple Scab 32 F 50% Green Tip McIntosh flower buds
Fire Blight 65 F First Blossom Open
Sooty Blotch & Flyspeck *NA 90% Petal Fall, McIntosh
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 90% 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)

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

Cornell Fruit Resources, tree fruit IPM