Berries Northwest Berry Pests/Disorders Starting with the letter S
Click on the underlined common name for more information, including scouting,and cultural, biological, and chemical controls, and more pictures.
| Crop Type | Common Name Latin Name |
Information/description (short) | Representative Photo |
| Raspberries | Sawfly Monophadnoides geniculatus |
Sawfly is a minor pest of raspberries in the northwest that can be confused with leafrollers. In the late spring, larvae roll leaves and feed on undersides of leaf. Their feeding activity usually doesn't pose a problem but they can be a contaminant in mechanically harvested fields. [photo by K. Gray] |  |
| Strawberries | Slugs Limax spp., Arion spp., Deroceras spp. |
Slugs can be a major problem during harvest when they feed on berries causing loss of quality. Damage is accompanied by slime trails, which can also render fruit unmarketable. They can also be a harvest contaminant. The slug population is closely correlated to weather conditions during harvest. Cool, wet conditions can lead to major slug problems. [photo by Tom Peerbolt] |  |
| Raspberries | Slugs Limax spp., Arion spp., Deroceras spp. |
Slugs can climb up the raspberry canes and feed on foliage and berries; their feeding and the slime trails they leave behind can reduce fruit quality. They can also be a contaminant in the harvested fruit. They are most likely to be a problem in cool, wet summers. [photo by Tom Peerbolt] |  |
| Blueberries | Slugs Limax spp., Arion spp., Deroceras spp. |
Slugs are not a major blueberry pest. However, given the right environmental and field conditions they can be numerous enough to cause economic damage. Slugs can climb up the blueberry plant and feed on foliage and berries. Their feeding and the slime trails they leave behind can reduce fruit quality. They can also be a contaminant in the harvested fruit. [photo by R. Berry] |  |
| Blackberries | Slugs Limax spp., Arion spp., Deroceras spp. |
Slugs may climb canes and move onto berries, on which they become contaminants. They are most likely to be a problem in cool, wet summers. [photo by Tom Peerbolt] |  |
| Raspberries | Snowy Tree Cricket Oecanthus fultoni |
This is a rare pest in northwest raspberries. Females drill small holes in canes to deposit eggs. Adults are winged, but otherwise resemble nymphs. Tree crickets are whitish to light green, with slender bodies and long antennae. The snowy tree cricket has black spots on the first two antennal segments. [photo from the Ontario Ministry of Agriculture] |  |
| Strawberries | Spittlebug Philaenus spumarius |
Spittlebugs cause little economic injury but they are a nuisance for pickers. White, slimy froth that resembles spittle surrounds the tiny yellow nymphs in their feeding places on new growth. The nymphs suck juices from leaves and fruit spurs and can cause them to become distorted and stunted. Resulting in some reduced yield and poorer fruit quality. [photo by K. Gray] |  |
| Raspberries | Spur Blight Didymella applanata |
This fungus overwinters on infected canes. Spores released from lesions infect floricane leaves showing numerous brown necrotic spots. Infected primocane foliage symptoms usually appear as a brown, wedge-shaped lesion. The fungus then moves through the leaf and petiole and is most apparent as a purplish/brown lesion around the bud on the lower portion of primocanes. This symptom on primocanes may not be seen until mid-harvest or thereabouts. [photo by P. Bristow] |  |
| Blackberries | Stamen Blight Hapalosphaeria deformans |
When present, this disease can be severe. It can affect blackberries and hybrid berries, particularly Boysenberry. When infected fruit develops, the receptacle is constricted, and a number of drupelets either fail to develop or do so unevenly. Ripening may be uneven, and fruit is hard and difficult to remove from the receptacle. [photo from Oregon State University] |  |
| Raspberries | Stinkbug Euschistus conspersus, and other species |
All adults are shield shaped but color and size can vary. Adults and egg masses on ripe fruit can cause quality issues and can also be a contaminant on harvested fruit. [photo by T. Peerbolt] |  |
| Blackberries | Stinkbug Euschistus conspersus, and other species |
All adults are shield shaped but color and size can vary. Adults and egg masses on ripe fruit can cause quality issues and can also be a contaminant on harvested fruit. [photo by K. Gray] |  |
| Strawberries | Strawberry crown moth Synanthedon bibionipennis |
Strawberry crown moth is primarily a pest in southern Washington and Oregon. Adults are clear winged moths that resemble yellow jackets and fly in June and July. Larvae are white with a brown head and approximately one inch long and overwinter in strawberry crowns and roots. [photo by K. Gray] |  |
| Raspberries | Strawberry Crown Moth Synanthedon bibionipennis |
Adults are clear winged moths that resemble yellow jackets. Larvae can girdle the crowns and seriously injure black raspberries and occasionally also cause economic damage in red raspberries and blackberries. Plants are stunted and have poor vigor. It has been found in berry crops in the Willamette Valley and Southwest Washington. [photo by K. Gray] | |
| Blackberries | Strawberry Crown Moth Synanthedon bibionipennis |
Adults are clear winged moths that resemble yellow jackets. Larvae can girdle the crowns and seriously injure black raspberries and occasionally also cause economic damage in red raspberries and blackberries. Plants are stunted and have poor vigor. It has been found in berry crops in the Willamette Valley and Southwest Washington [photo by K. Gray] | |
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