Jonagold Apples

Integrated Pest Management for Apples

A Guide for Sampling and Decision-Making for Key Apple Pests in Northwest Washington

 

Tables and Charts

 

Acknowledgements

Nooksack IPM Advisory Committee

Introduction

Key Sampling Periods

Part 1 - Pre-bloom

Part 2 - Bloom through Petal-Fall

Part 3 - Late Spring and Summer

Part 4 - Post Harvest

Part 5 - Tables and Charts

List of Key Pests
Disease Cycle of Apple Scab
Apple Scab Infection Table
Disease Cycle of Anthracnose
Codling Moth Charts
Spider Mite Graphs
Binomial Sampling
Mite Counting Grid
Insect Identification Sheets

Part 7 - Pesticides and Water

 

List of Key Pests and Natural Enemies Found on Apples in Whatcom County

Common Name

Rank(1)

Latin Name

Pests

Insects

Caterpillars

 

Codling Moth

Obliquebanded Leafroller

>>>

>

Cydia pomonella

Choristoneura rosacean

Sucking Insects

 

Lygus Bug

Stink Bug

White Apple Leafhopper

>>

>>

>>

Family: Miridae

Family: Pentatomidae

Typhlocyba pomaria

Other

Dock Sawfly

>>

Ametastegia glabrata

Spider Mites

Twospotted Spider Mite

European Red Mite

>

>>

Tetranychus urticae

Panonychus ulmi

Rust Mites

Apple Rust Mite

(Beneficial at low to moderate density)

>

Aculus schlectendali

Diseases

Apple Scab

Powdery Mildew

Anthracnose Canker

>>>

>

>>>

Venturia inaequalis

Podosphaera leucotricha

Cryptosporiopsis malicorticis

Natural Enemies

Predatory Mites

Western Predatory Mite

None

Typhlodromus occidentalis

Zetzellia mali

Insects

 

 

Family Miridae (2)

 

Lady Beetles

Minute Pirate Bug

Green Lacewings

None

None

None

Family: Coccinellidae

Family: Anthocoridae

Family: Chrysopidae

Genus : Phytocoris

Genus: Diaphnocoris

Genus: Heterotoma

Note: This is not intended to be an all-inclusive list of either pests or natural enemies. This represents the most common or "Key" species that are encountered by practitioners in the field.

  1. Relative ranking of pest importance and damage potention, >>>= most important, >= less important
  2. Three distinctly different mirids have been detected in area orchards. They are most likely beneficial

 

       
 

G.W. Menzies & C.B. MacConnell, WSU Cooperative Extension Whatcom County
December 1999

Funded in part by: Washington State Department of Ecology through U.S. Environmental Protection Agency, Section 319 Funds