Burns, Diane E.

Calkin, James D.

Fisher, Glenn C.

Weinzierl, Richard

Undetermined

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16Section IIFoliage and Seed-feeding and Mining InsectsObliquebanded Leafroller Control onRed Raspberries, Benton County, OR, 1984Glenn C. Fisher, James D. Calkin,Richard Weinzierl and Diane E. BurnsDepartment of EntomologyOregon State University, Corvallis, OR 97331Four insecticides were applied on 5-3-84 to control the larvae of this leafrollerinfesting commercially grown raspberries. Treatments were applied in a randomizedcomplete block design with four replications. Each replication consisted of 25row feet of six-year-old canes (9' centers). An Ameriand McKissick sprayerequipped with a handgun delivering ca. 100 psi pressure was used to deliver theequivalent of 194 gallons of spray solution per acre per treatment (1 gallon perrep.). No adjuvants were used; pH of water used to formulate the sprays was 6.5.Prior to application of the different treatments, the rolled leaves of ten liveobliquebanded leafroller larvae (2-4 instar) were tagged for inspection posttreatment. Total live larvae in these tagged leaves per treatment were recorded.Excellent control was achieved with all insecticides evaluated.OBLIQUEBANDED LEAFROLLERPost treatment survivors/40 knownTreatment and lb ai/A Live larvae prior to treatment 1/Lorsban 50 W 1.5Lorsban 50 W 0.75Lannate 1.8 L 0.75Pydrin 2.4 EC 0.2Sevimol 4. 2.0Untreated— "Tagged rolled leaves inspected 5 days post treatment.0000032

Obliquebanded Leafroller Control on Red Raspberries, Benton County, OR, 1984

https://ir.library.oregonstate.edu/downloads/fb494f693

Obliquebanded Leafroller Control on Red Raspberries, Benton County, OR, 1984

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