Hood River area home fruit tree pest management

Successful control of pests using chemicals depends on many factors including choice of material, application timing, application frequency, and coverage. Early season sprays are timed for stage of bud/fruit development. See the accompanying diagram showing bud stages. Spring through summer sprays are timed by pest development. For information on current season pest emergence and determining when to initiate pesticide applications, contact your local OSU Extension Service Office.

This guide includes pesticides currently registered for home use that have a reasonable chance of controlling the pests listed if applied at appropriate times with adequate frequency, and sufficient coverage. Other materials are available that will provide suppression of these pests under conditions of low pest pressure but probably will not provide sufficient control under local conditions. Pesticides are listed by active ingredients. Consult the attached list of pesticide products for controlling fruit tree pests and diseases for brand name products containing these active ingredients. 

Use appropriate personal protective equipment and handling procedures to avoid exposure with all pesticides.

Pest management strategies by fruit type

Apple

Pest or Disease Stage or Time Material or Practice
mites, scale, leafroller 1-2 (delayed dormant) horticultural mineral oil and wettable sulfur or lime sulfur1
scab, powdery midlew 3-4 (prepink) wettable sulfur or lime sulfur1
scab, powdery mildew 5-6 (pink) myclobutanil, wettable sulfur, or lime sulfur1
codling moth (most important) spring-summer until fruit is harvested or mid-August whichever is first)

acetamiprid, carbaryl, granulosis virus, spinosad

horticultural mineral oil at 200, 400, 600, 1200, 1350 & 1500 degree days

horticultural mineral oil at above schedule then bagging

apple maggot (most important) Mid-July through harvest fruit bagging or spinosad or carbaryl applications starting mid-July  will control apple maggot
general sanitation Post harvest collect and dispose of groundfall or unused fruit; remove & destroy diseased branches
anthracnose Post harvest fixed copper
scab leaf fall rake & destroy leaves

Pear

Pest or Disease Stage or Time Material or Practice
pear psylla, mites, scale, leafroller 0 (dormant) horticultural mineral oil and wettable sulfur or lime sulfur1
pear psylla, mites, scale, leafroller 1-2 (delayed dormant) horticultural mineral oil and wettable sulfur or lime sulfur1
scab, powdery mildew 3-5 (pink) wettable sulfur or lime sulfur1
scab, powdery mildew petal fall wettable sulfur or lime sulfur1
codling moth (most important) spring-summer until fruit is harvested or mid-August (whichever is first)

acetamiprid, carbaryl, granulosis virus, spinosad

horticultural mineral oil at 200, 400, 600, 1200, 1350 & 1500 degree days

horticultural mineral oil at above schedule then bagging

general sanitation postharvest collect and dispose of groundfall or unused fruit; remove & destroy diseased branches
scab leaf fall rake & destroy leaves

Cherry

Pest or Disease Stage or Time Material or Practice
aphids, leaf rollers, mites, scale 0-3 (dormant to delayed dormant) horticultural mineral oil
brown rot blossom blight 4-5 (popcorn) chlorothalonil, myclobutanil, propiconazole, wettable sulfur
(most important) western cherry fruit fly spotted wing Drosophila spring-summer until all fruit is harvested carbaryl, malathion, spinosad
powdery mildew summer myclobutanil, horticultural mineral oil, propiconazole, wettable sulfur
brown rot fruit rot (if rain is forecasted) preharvest myclobutanil, propiconazole, wettable sulfur
general sanitation postharvest collect and dispose of groundfall or unused fruit; removed & destroy diseased branches
brown rot leaf fall Remove and destroy mummy fruit

Peach & Nectarine

Pest or Disease Stage or Time Material or Practice
shot hole, peach leaf curl 0 (dormant) chlorothalonil, fixed copper or lime sulfur1
aphids, mites, scale 1 (delayed dormant) horticultural mineral oil
brown rot blossom blight 2-5 (prebloom) chlorothalonil, myclobutanil, propiconazole, wettable sulfur
powdery mildew shuck fall myclobutanil, horticultural mineral oil, propiconazole, wettable sulfur
shothole shuck fall chlorothalonil, myclobutanil
powdery mildew summer nyclobutanil, horticultural mineral oil, propiconazole, wettable sulfur
peach twig borer summer spinosad
spotted wing Drosophila preharvest spinosad, carbaryl
brown rot fruit rot (if rain is forecasted) preharvest myclobutanil, propiconazole, wettable sulfur
general sanitation postharvest collect and dispose of groundfall or unused fruit; remove & destroy diseased branches
brown rot leaf fall remove and destroy mummy fruit
peach leaf curl leaf fall chlorothalonil or lime sulfur1
peach leaf curl leaf  chlorothalonil or lime sulfur1

Plum & Prune

Pest or Disease Stage or Time Material or Practice
aphids, mites, scale 0 -3 (dormant to delayed dormant) horticultural mineral oil
brown rot blossom blight 4-5 (popcorn) chlorothalonil, myclobutanil, propiconazole, wettable sulfur
brown rot blossom blight 7 (full bloom) chlorothalonil, myclobutanil, propiconazole, wettable sulfur
brown rot blossom blight shuck fall chlorothalonil, myclobutanil, propiconazole, wettable sulfur
spotted wing Drosophila preharvest spinosad, carbaryl
brown rot fruit rot (if rain is forecasted) preharvest myclobutanil, propiconazole, wettable sulfur
general sanitation postharvest collect and dispose of groundfall or unused fruit; remove & destroy diseased branches
brown rot leaf fall Remove and destroy mummy fruit

Apricot

Pest or Disease Stage or Time Material or Practice
shot hole 0 (dormant) chlorothalonil, fixed copper
aphids, mites, scale 1 (delayed dormant) horticultural mineral oil
brown rot blossom blight 2-5 (prebloom) chlorothalonil, myclobutanil, propiconazole
shothole shuck fall chlorothalonil
brown rot fruit rot summer myclobutanil, propiconazole
powdery mildew summer myclobutanil, propiconazole
spotted wing Drosophila preharvest spinosad, carbaryl
brown rot fruit rot (if rain is forecasted) preharvest myclobutanil, propiconazole
general sanitation postharvest collect and dispose of groundfall or unused fruit; remove & destroy diseased branches
brown rot leaf fall remove and destroy mummy fruit
shot hole leaf fall chlorothalonil, fixed copper

Details for management of most important pests

Codling moth

Codling moth control will require multiple spray applications. Successful control requires thorough coverage of all leaf and fruit surfaces. The frequency of application or spray interval is specified on the product label but generally ranges from 7 to 10 days for these pesticides.

Fruit bagging is a non-chemical approach to codling moth and apple maggot control that can be very successful. Bagging may not be practical on large trees and must be completed before codling moth egg-laying begins (usually late April). One or more well timed oil sprays followed by bagging may be an effective program for codling moth. For more information ob bagging see: Codling Moth Management Guide from UC IPM.

Spotted Wing Drosophila and Western cherry fruit fly

Pesticide applications are made to protect fruit from egg-laying adult flies and should generally be initiated when fruit begins to change to ripe color. For information on current season pest emergence and determining when to initiate pesticide applications, contact your local OSU Extension Service Office. Successful control requires thorough coverage of all leaf and fruit surfaces and will likely require multiple spray application. The frequency of application or spray interval is specified on the product label but generally ranges from 7 to 10 days for these pesticides. Collect and destroy fruit remaining on tree after harvest to prevent infestation if spray program has been discontinued. 

Apricot, peach, plum, prune, and nectarine are likely to be attacked if allowed to tree ripen. One or two spray applications starting when fruit begins to change to mature color should provide control. Repeat application at interval specified on the product label. 

Home use pesticides for controlling fruit tree pests & diseases

  • acetamiprid - ortho flower fruit & vegetable insect killer
  • carbaryl (Sevin) - many products, e.g. Garden tech Sevin
  • chlorothalonil - Ortho Max Garden Disease Control; Monterey Fruit Tree, Vegetable & Ornamental Fungicide
  • copper - Monterey Liqui-cop; Lilly Miller Mictrocop, Kop-R-Spray
  • granulosis virus (codling moth) - Cyd-X available from Peaceful Valley Farm Supply
  • horticultural mineral oil - Monterey Saf-T- Side
  • lime sulfur1 - Lilly miller polysul
  • malathion - many products, e.g. Bonide Malathion insect control
  • myclobutanil - Spectracide immunox
  • propiconazole - Monterey Fungu-Fighter
  • spinosad - Monterey garden insect spray
  • wettable sulfur - many products, e.g. Bonide micronized sulfur

Other resources

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