Section anchor "apple-trees"
Pest management schedule for backyard apple trees in Eastern Oregon
The table below outlines a suggested management schedule for the most common insect pests and diseases of apple trees in Eastern Oregon. Product availability may vary by location. Always read and follow label instructions. For more detailed information on home fruit tree care, reference the OSU Extension publication Managing diseases and insects in home orchards (EC 631) or contact your local Oregon State University Extension office.
|
Growth stage |
Timing |
Target |
Standard |
Organic |
Notes |
|---|---|---|---|---|---|
|
Dormant and delayed dormant |
January–March | pruning | Proper pruning will open up the tree canopy and maintain quality fruit production. Burn or dispose of visibly infected branches. Copper may be applied if cankers are found and have been pruned out. | Early pruning in January will allow wounds to benefit from later spray applications. | |
| January–March | aphids, mites, scale | horticultural oila (e.g., Monterey Horticultural Oil, Bonide All Seasons Horticultural Oil) | Apply in January or February. Spray when temperatures are above freezing and under dry conditions. | ||
|
Pre-bloom |
½” green tips and pink unopened blossoms | powdery mildew | myclobutanil (e.g., Spectracide IMMUNOX Multi-Purpose Fungicide) | horticultural oil, sulfur (e.g., Safer Brand Fungicide), potassium bicarbonate, neem oil (e.g., AzaMax), Bacillus subtilis (e.g., CEASE Biological Fungicide), insecticidal soap | For sulfur, apply at green tip stage and again at pink unopened blossom stage. Do not apply oil within two weeks of sulfur when leaves are present. Remove shoot tips with visible mildew. |
| ½” green tips and pink unopened blossoms | scab | captan, myclobutanil | sulfur | Treat if scab was found previously. | |
|
Bloom |
Avoid pesticide use during bloom. Otherwise, apply in early morning or late afternoon and use pesticides with low pollinator toxicity. | ||||
|
Petal fall through late spring |
7–10 days after petal fallb | codling moth | acetamiprid, carbaryl, esfenvalerate, gamma-cyhalothrin, lambda-cyhalothrin, malathion (e.g., Ortho MAX Malathion), pyrethrins (e.g., Bonide Pyrethrin) | horticultural oil, granulosis virus (e.g., CYD-X), kaolin clay (e.g., Surround WP), spinosad (e.g., Bonide Captain Jack’s DeadBug Brew), bagging fruit | Spray every 7 – 14 days when fruit is present. For bagging, use mesh or paper bags; remove a few weeks before harvest for red varieties. |
| April–May | aphids | malathion, permethrin, pyrethrins | neem oil, Beauveria bassiana (e.g., Naturalis-O, Mycotrol WPO), insecticidal soap | Monitor for aphid populations, especially at shoot tips. | |
| April–June | fire blight | Monitor for fire blight symptoms and prune out blighted stems at least 12” below blighted tissue. Some cultivars and rootstocks are more susceptible. | |||
|
Late spring through summer |
post-fruit set (~1” fruit) | fruit thinning | Removing excess fruit improves ease of insect monitoring, reduces insect targets, and maintains proper reproductive balance. Consider keeping only one apple per cluster. | ||
| whenever fruit are presenta | codling moth | acetamiprid, carbaryl, esfenvalerate, gamma-cyhalothrin, lambda-cyhalothrin, malathion, pyrethrins | granulosis virus, kaolin clay, spinosad, bagging fruit | See above. Some products for codling moth will also control apple maggot and brown marmorated stink bug. | |
| when pest is present | aphids | malathion, permethrin, pyrethrins | neem oil, Beauveria bassiana, insecticidal soap | Monitor for aphid populations, especially at shoot tips. | |
| when pest is present | mites, scale | neem oil, horticultural oil, insecticidal soap | Do not apply horticultural oil above 90 °F. | ||
|
Harvest and postharvest |
July–November | windfalls | Remove all fallen apples from orchard floor. “Windfalls” should be destroyed, composted, or otherwise disposed of offsite. | ||
| November | anthracnose, fire blight, scab | remove and dispose of fallen leaves, copper (e.g., Bonide Copper Fungicide, Monterey Liquid Copper Fungicide) | Remove and destroy cankered branches before fall rains. Apply copper when leaves fall. | ||
a Some formulations of these products may be approved for organic use.
b Insect trapping or degree day monitoring can be used to time codling moth sprays. Contact your local Extension office for more information.
Section anchor "cherry-trees"
Pest management schedule for backyard cherry trees in Eastern Oregon
The table below outlines a suggested management schedule for the most common insect pests and diseases of cherry trees in Eastern Oregon. Product availability may vary by location. Always read and follow pesticide label instructions. For more detailed information on home fruit tree care, reference the OSU Extension publication Managing diseases and insects in home orchards (EC 631) or contact your local Oregon State University Extension office.
|
Growth stage |
Timing |
Target |
Standard |
Organic |
Notes |
|---|---|---|---|---|---|
|
Dormant |
January–March | pruning | Proper pruning will open up the tree canopy and maintain quality fruit production. Burn or dispose of visibly infected branches. Copper may be applied if cankers are found and have been pruned out. Post-harvest pruning in late summer can reduce risk of disease. | ||
|
Delayed dormant |
Late winter (February – March) | aphids, mites, scale, leafrollers | horticultural oil (e.g., Monterey Horticultural Oil, Bonide All Seasons Horticultural Oil) | This is an important stage for insect pest control. This spray is highly recommended. | |
|
Pre-bloom |
As flower buds begin to show color prior to blooming | fungal disease (e.g., brown rot, leaf spot, shothole) | captan, chlorothalonil (e.g., Bonide Fung-onil), myclobutanil (e.g., Spectracide IMMUNOX Multi-Purpose Fungicide), propiconazole (e.g., Bonide Infuse Systemic) | copper (e.g., Bonide Copper Fungicide, Monterey Liquid Copper Fungicide) | Allow two weeks between copper and sulfur sprays. |
| As flower buds begin to show color prior to blooming | aphids, mites, scale, leafrollers | carbaryl, esfenvalerate, malathion | horticultural oil, insecticidal soap (Safer Brand), pyrethrinsa (e.g., PyGanic Gardening), spinosad (e.g., Bonide Captain Jack’s DeadBug Brew), sulfur (Safer Brand Fungicide) | Allow two weeks between copper and sulfur sprays. Allow two weeks between sulfur and horticultural oil sprays. | |
|
Bloom |
Avoid insecticide use during bloom. Otherwise, apply early morning or late afternoon and use pesticides with low pollinator toxicity. | ||||
|
Petal fall through late spring |
Petal fall through shucksplitb | powdery mildew | myclobutanil, propiconazole | horticultural oil, neem oil (e.g., AzaMax), insecticidal soap, pyrethrinsa, sulfur | |
| Petal fall through shucksplitb | mites, aphids | carbaryl, esfenvalerate, malathion | horticultural | ||
| Petal fall through shucksplitb | cherry leaf spot, brown rot, shothole | captan, chlorothanolil, myclobutanil, propiconazole | sulfur | Use if there is a history of disease. Shucksplit spray recommended for wet springs. | |
|
Late spring through summer |
May or when fruit turns from light green to yellow green | Western cherry fruit fly spotted wing drosophila | acetamiprid, carbaryl, esfenvalerate, malathion, zeta-cypermethrin | pyrethrins, spinosad | Repeat applications at 7- to 14-day intervals, or as indicated on label. These are major pests of cherry; do not skip these sprays. |
| powdery mildew, hatching insects | acetamiprid, carbaryl, esfenvalerate, gamma-cyhalothrin, lambda-cyhalothrin, malathion | horticulturl oil, insecticidal soap, pyrethrinsa | |||
| when pest is present | aphids | esfenvalerate, malathion, permethrin | neem oil, Beauveria bassiana, insecticidal soap, pyrethrinsa | Insecticidal soap will also control mites. | |
|
Harvest and postharvest |
July–November | unharvested fruit | Any fallen or unharvested fruit should be removed and destroyed or properly disposed of. Any ripe fruit allowed to hang on tree must be treated for cherry fruit fly as outlined above. | ||
| After leaf fall but before fall rains begin | bacterial and fungal disease | Remove and dispose of fallen leaves, copper | Remove and destroy infected branches before fall rains. Apply copper when leaves fall. This spray is highly recommended. | ||
a Some formulations of these products may be approved for organic use.
b Shucksplit is when small fruit shed their papery sheath shortly after bloom.
c Control of this pest is mandated for cherry-producing counties in Oregon. Insect trapping can be used to time cherry fruit fly sprays. Contact your local Extension office for more information.
Section anchor "stone-fruit"
Pest management schedule for peach, nectarine and apricot trees in Eastern Oregon
The table below outlines a suggested management schedule for the most common insect pests and diseases of peach, nectarine and apricot trees in Eastern Oregon. Product availability may vary by location. Always read and follow pesticide label instructions. For more detailed information on home fruit tree care, seen Managing diseases and insects in home orchards (EC 631) or contact your local Oregon State University Extension office.
|
Growth stage |
Timing |
Target |
Standard |
Organic |
Notes |
|---|---|---|---|---|---|
|
Dormant and delayed dormant |
Late winter (February - March) | pruning | Prune trees in dry weather. Pruning to open the canopy helps maintain quality fruit production. Prune out diseased branches at least 12" below visible damage and burn or dispose of pruned branches. Summer pruning can reduce the chance of new infections. | ||
| Late winter (February - March) | fungal diseases (e.g., peach leaf curl, shothole) | chlorothalonil (e.g., Bonide Fung-onil) | copper (e.g., Monterey Liquid Copper Fungicide) | Copper and horticultural oil can be mixed when applied at delayed dormant stage. | |
| Late winter (February - March) | aphids, mites, scale | horticultural oila (e.g., Monterey Horticultural Oil, Bonide All Seasons Horticultural Oil) | Treat for leaf curl on peach and nectarine. | ||
|
Pre-bloom |
As flower buds begin to show color prior to blooming | fungal diseases (e.g., brown rot, shothole) | captan, chlorothalonil, myclobutanil (e.g., Spectracide IMMUNOX Multi-Purpose Fungicide), propiconazole (e.g., Bonide Infuse Systemic) | copper, sulfur (Safer brand garden fungicide) | Allow two weeks between sulfur and horticultural oil sprays. |
| As flower buds begin to show color prior to blooming | fungal diseases (e.g., brown rot, shothole) | captan, chlorothalonil, myclobutanil (e.g., Spectracide IMMUNOX Multi-Purpose Fungicide), propiconazole (e.g., Bonide Infuse Systemic) | copper, sulfur (Safer brand garden fungicide) | Do not use sulfur on apricots. | |
| As flower buds begin to show color prior to blooming | aphids, leafrollers, mites, peach twig borer, scale, stinkbugs | esfenvalerate, gamma-cyhalothrin (e.g., Spectracide Triazicide), lambda-cyhalothrin, permethrin (e.g., Bonide Eight Insect Control), pyrethrinsb, zeta-cypermethrin (e.g., Garden tech sevin insect-killer) | Bacillus thuringiensis kurstaki (e.g., Monterey B.t.), insecticidal soap (Safer brand Insect killing soap), pyrethrinsb (e.g., PyGanic Gardening), neem oil (e.g., AzaMax), spinosad (e.g., Bonide Captain Jack's DeadBug Brew) | ||
|
Bloom |
Avoid insecticide use during bloom. Otherwise, apply early morning or late afternoon and use pesticides with low pollinator toxicity. | ||||
|
Post-bloom |
Petal or shuck fallb | aphids, leafrollers, mites, peach twig borer, stinkbugs | esfenvalerate, gamma-cyhalothrin, lambda-cyhalothrin, pyrethrins, zeta-cypermethrinb | Bacillus thuringiensis kurstaki, insecticidal soap, neem oil, pyrethrinsb, spinosad | This is an important stage for pest control. |
| Petal or shuck fallb | fungal diseases (e.g., shothole, powdery mildew) | captan, chlorothanolil, myclobutanil, propiconazole | copper, horticultural oila (powdery mildew only), sulfur | Do not use sulfur on apricots. | |
|
Late spring through summer |
When fruit is present and growing | peachtree borer | esfenvalerate, gamma, cyhalothrin, lambda-cyhalothrin, permethrin, zeta-cypermethrin | neem oil, pyrethrinsa | Apply products to the lower trunk and base of the tree starting in early summer. |
| When fruit is present and growing | powdery mildew | myclobutanil, propiconazole | horticultural oila, sulfur | Treat if pests are found or if there is a history of severe infestation. Some products require repeat applications. See label for intervals. | |
| When fruit is present and growing | aphids, leafrollers, mites, peach twig borer, stinkbugs, spotted wing drosophilad | esfenvalerate, gamma-cyhalothrin, lambda-cyhalothrin, pyrethrinsb, zeta-cypermethrin | insecticidal soap, neem oil, pyrethrinsb, spinosad | Do not use sulfur on apricots. | |
|
Harvest and postharvest |
Summer to fall | unharvested fruit | All fallen or unharvested fruit should be removed and destroyed or properly disposed of. | ||
| After leaf fall but before fall rains begin | bacterial (e.g., bacterial canker) and fungal diseases | chlorothalonil | copper | Remove and destroy infected branches. Apply fungicide when leaves fall. | |
|
Additional tips |
Prevent irrigation water from hitting leaves or trunks to reduce the spread of bacterial and fungal diseases. | ||||
| Paint trunks with white tree paint (such as Arizona’s Best Tree Trunk White) to prevent injury and a variety of pest problems. | |||||
a All-seasons horticultural oil can suppress powdery mildew and some pests (e.g., mites). Do not use within two weeks of sulfur or at temperatures above 85-90°F.
b Some formulations of this product may be approved for organic use.
c Shuck fall is when small fruit shed their papery sheath shortly after bloom.
d Spotted wing drosophila is an emerging pest of tree fruit in Oregon. Insecticide applications for other pests may control spotted wing drosophila.
¡Use los pesticidas con seguridad!
- Póngase ropa de protección y equipo de seguridad según las recomendaciones de la etiqueta. Báñese después de cada uso.
- Lea la etiqueta del pesticida—aunque lo haya usado antes. Siga al pie de la letra las indicaciones de la etiqueta (y cualquiera otra indicación que Ud. tenga).
- Tenga precaución al aplicar los pesticidas. Conozca su responsabilidad legal como aplicador de pesticidas. Usted puede ser responsable de heridas o daños resultantes del uso de un pesticida.
Trade-name products and services are mentioned as illustrations only. This does not mean that the Oregon State University Extension Service either endorses these products and services or intends to discriminate against products and services not mentioned.
