USUExtensionIPM
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Time to wrap young and/or thin-skinned trees with white tree wrap for protection from sunscald; damaged limbs more susceptible to borers.
4:00 PM Nov 16th
from web
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Spider mite females starting to turn orange and migrate to ground cover for overwintering; might be beneficial to target with hort. oil now.
10:42 AM Sep 14th
from web
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Codling moth and peach twig borer treatments end around Sept. 15 because beyond that date, eggs will not have enough heat or light to hatch.
10:40 AM Sep 14th
from web
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Symptoms from cane borers (crown borer, horntail, rose stem girdler) starting to show up now as dead, wilted leaves-prune out infested canes
2:28 PM Jul 31st
from web
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Earwigs are starting to munch on ripening peaches; carbaryl provides just 1-2 days residual; consider using tanglefoot around tree trunks.
2:23 PM Jul 31st
from web
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Second generation codling moth egg hatch to start July 13-20, PTB egg hatch to start July 25-29 in most northern Utah locations.
1:36 PM Jul 11th
from web
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A bumper crop for tart cherries means a 4-week harvest period; uneven fruit ripening requires two well-timed ethrel applications.
1:34 PM Jul 11th
from web
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Hail storms in June damage apples, sweet cherries in Utah, Davis, Box Elder, and Salt Lake counties. Some have lost crops.
1:27 PM Jul 11th
from web
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Peaches showing both peach and apple powdery mildew lesions due to wet weather, but infections will stop after peach pit hardening.
1:25 PM Jul 11th
from web
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Woolly apple aphids are starting to move up into the tree canopy; spider mite populations still low; lots of PM on cherries, peach fruit.
10:53 AM Jun 22nd
from web
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Greater peachtree borer has been trapped in the Wasatch Front area and sensitive peach, nectarine, apricot should be protected now.
10:45 AM Jun 22nd
from web
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Western cherry fruit flies have been trapped in Davis and Utah Counties. Treatments should begin when fruits develop a salmon blush color.
1:04 PM Jun 8th
from web
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A predatory mite, Balaustium putmani, was found in large numbers in Box Elder County.
1:04 PM Jun 8th
from web
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Peach twig borer biofixes have been set at several northern Utah locations: Davis, Utah, and Box Elder counties.
12:18 PM May 28th
from web
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The latest advisory has been posted at: .
12:17 PM May 28th
from web
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Some apple and peach orchards have been seeing very high levels of brown mites, possibly due to reduced pesticide inputs last year.
12:16 PM May 28th
from web
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Spider mites, woolly apple aphid are slowly becoming active in orchards, but are not at threshold levels yet.
12:16 PM May 28th
from web
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Fruitworm, cankerworm, and the first spider mites detected in orchards. Lots of predators: syrphid fly larvae, lady beetle, lacewing eggs.
8:09 AM May 21st
from web
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Codling moth biofixes have been recorded for Cache County at May 17-18. Moth catch is high among most orchards in northern Utah.
8:07 AM May 21st
from web
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Fire blight risk is high to extreme for much of northern Utah thru May 22, for trees with flowers, 2+ hours of moisture, and active cankers.
6:09 PM May 13th
from web
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- Name USU Extension IPM
- Location Logan, UT
- Web http://utahpests....
- Bio Fruit pest information and spray timing for codling moth, peach twig borer, and fire blight for northern Utah.
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