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Belchertown MA………….Apple Pest Monitoring Pocket Guide

Apple Calendar – Early season   ………………    Apple Calendar – Late season

Jump down to sections:
Scab ……. Fire blight ……. Flyspeck ….. Insects & Mites ……. Horticulture ……. Weather archive

 


* CURRENT WEATHER *

3 Day Weather Chart……….7 Day Weather Chart……….
…….30 day Temperature Chart………      ..30 day Rain Chart

Hourly Forecast Table – NEXT 10 days
………Hourly Observations Table – PAST 7 days
……………Weather archive is at bottom of this page.

 


* APPLE SCAB *

Apple Scab – KEY DATES

 

SCAB BIOLOGY
DAILY PRIMARY SCAB Infection Chart 
…….Comprehensive estimate of relative primary scab infection risk. Absolute risk depends on infection pressure, cultivar, site, pruning etc.

…….Daily primary scab infections in TABLE format

CUMULATIVE PRIMARY SCAB potential and release

Scab ascospore maturity chart .... Less useful than comprehensive ratings shown above.
……….Scab ascospore maturity table

Primary scab infection periods: DETAILS
…….Timing and severity for each rain event during primary scab season.

Primary & secondary scab infection periods: Summary
…….Same as above but covers wetting periods throughout the growing season in less detail.


SCAB FUNGICIDE RESPRAY DATES
Primary scab

* For orchards protected by a PROTECTANT fungicide  (Captan, mancozeb, Polyram, and Syllit).

* For orchards protected by a STROBILURIN fungicide  (Flint, Pristine,Sovran, Cabrio).
…….These estimates also a best guess for SDHI fungicides (Luna, Merivon, Fontelis).

* For orchards protected by a SULFUR fungicide

—————-
These next two tables are only for use in orchards where low scab index was measured the previous fall.
* For Protectant fungicides used in LOW-SCAB orchards
…….* For Strobilurin fungicides used in LOW-SCAB blocks

—————-
Secondary scab
1st and 2nd generation Scab LESION SHOW dates

Secondary Scab Fungicide Respray Dates
…..Respray guidelines for transition period between end of primary scab ascospore releases and confirmation of successful scab control.

 


* FIRE BLIGHT *

     Models estimate relative risk.  Absolute risk depends on infection pressure, cultivar, rootstock etc.
CougarBlight – blossom infection risk
…….CougarBlight – Chart version

Eastern Fire Blight Model - blossom infection risk

Fire blight – susceptible blossom respray dates

 


* FLYSPECK *

See background information for flyspeck tables for definition of “Low Risk” trees.

Flyspeck control with Pristine – 21 days or 2.5″ rain protection
Flyspeck – Pristine – 1stCOVER through JUNE spray dates
…….Flyspeck – Pristine – JULY spray dates
…………..Flyspeck – Pristine – AUGUST-SEPT. spray dates

Flyspeck control with Group A fungicides (Topsin M, Flint, Sovran, captan + phosphite)
…….- 21 days or 2.0″ rain protection
Flyspeck – Group A fungicides – 1stCOVER through JUNE spray dates
…….Flyspeck – Group A fungicides – JULY spray dates
…………..Flyspeck – Group A fungicides – AUGUST-SEPT. spray dates

Flyspeck control with Group B fungicides (captan, ziram) - 14 days or 1.5″ rain protection
Flyspeck – Group B fungicides – 1stCOVER through JUNE spray dates
…….Flyspeck – Group B fungicides – JULY spray dates
…………..Flyspeck – Group B fungicides – AUGUST-SEPT. spray dates

 


* INSECTS *

INSECT DATES (CM, DWB, LAW, MPB, OFM, OBLR, RBLR, SJS, STLM, TPB, WAL)
…….Key life cycle and management dates

Plum Curculio – insecticide depletion Table
…….Plum Curculio – insecticide depletion Chart 
……….Experimental only: Plum Curculio activity rating

Codling Moth insecticide depletion table: JUNE
…….Codling Moth insecticide depletion table: JULY
…………..Codling Moth insecticide depletion table: AUGUST

Apple Maggot JULY monitoring & respray dates
…….Apple Maggot AUGUST monitoring & respray dates

 


* MITES *

European Red Mite (ERM) KEY DATES

ERM resample dates – JUNE 
…….ERM resample dates – July&August

Mite thresholds

 


* HORTICULTURE *

McIntosh BUD STAGES

Thinning Weather Chart
…….Thinning weather table

Rough estimate of McIntosh HARVEST dates (begins after Full bloom).
…….Preharvest weather influences on Storability, Drop, Color, and Scald risk

 


* WEATHER * archive

Weather data – APRIL ……….Weather data – JULY

Weather data – MAY ………….Weather data – AUGUST

Weather data – JUNE ……….Weather data – SEPTEMBER

 

Degree day accumulation
Degree days – April ……….Degree days – July
Degree days – May ………..Degree days – August
Degree days – June………..Degree days – September


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