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CONTROL OF CRANBERRY WEEVIL IN HIGHBUSH BLUEBERRIES, 2010

CONTROL OF CRANBERRY WEEVIL IN HIGHBUSH BLUEBERRIES, 2010 Arthropod Management Tests 2011, Vol. 36 doi: 10.4182/amt.2011.C8 C8 BLUEBERRY (HIGHBUSH): Vaccinium corymbosum L., ‘Bluecrop’ Cesar Rodriguez-Saona Philip E. Marucci Center for Blueberry and Cranberry Research and Extension 125 A Lake Oswego Rd Chatsworth, NJ 08019 Phone: 609-726-1590 ext. 4412 Fax: 609-726-1593 E-mail: crodriguez@aesop.rutgers.edu Faruque Uz Zaman E-mail: zaman@aesop.rutgers.edu Robert Holdcraft E-mail: rholdcra@rci.Rutgers.edu Cranberry weevil: Anthonomus musculus (Say) Experiments tested the efficacy of Asana XL (grower standard), Assail 30SG, Avaunt 30WG, and Mustang Max EC against cranberry weevil in highbush blueberries. These experiments were conducted in four commercial blueberry cv. Bluecrop fields in Hammonton, New Jersey. Each field was divided into four, ~ 0.6-acre plots, with one side of all plots facing a wooded area. Insecticide treatments were assigned randomly to plots, and field was used as replicate. Treated plots were separated by a buffer row. Applications were made on 8–10 Apr with a Pak-Blast® model MBICO28 Sprayer (Rears Manufacturing Co., Eugene, OR) on a John Deere 5320N Tractor. The sprayer was calibrated to deliver 25 gal per acre at 150 PSI using eight nozzles with D5 orifices, yielding ~78 ml per bush. Pre-treatment cranberry weevil counts were taken on 6 April, and post-treatment counts were done on 12–14 Apr (4 DAT). Cranberry weevil adults were sampled using a white cloth beating sheet (Great Lakes IPM, Inc., Vestaburg, MI), by beating 1/5 of 40 different bushes in each plot. Total number of adult cranberry weevil per plot was divided by 8 to obtain the number of weevils per bush. Data were analyzed using ANOVA and means separation by Fisher’s LSD test at P = 0.05. Asana, Avaunt, and Mustang Max provided > 95% cranberry weevil control (Table 1). Table 1. No. Weevils per Bush (Mean±SE) Pre-Spray Post-Spray Treatment Rate 6 April 12-14 April % Control Assail 30SG 5.3 oz/ac 4.5 ± 1.6 a 2.2 ± 1.0 a 52.4 Asana XL 9.6 floz/ac 5.3 ± 1.2 a 0.0 ± 0.0 b 100.0 Avaunt 30WDG 6.0 oz/ac 5.3 ± 1.1 a 0.0 ± 0.0 b 99.4 Mustang Max EC 4.0 floz/ac 5.5 ± 1.2 a 0.3 ± 0.2 b 95.5 Means within a column followed by different letters are significantly different %Control = (1- (No. CBW Postspray / No. CBW Prespray)) × 100 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

CONTROL OF CRANBERRY WEEVIL IN HIGHBUSH BLUEBERRIES, 2010

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Oxford University Press
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© Published by Oxford University Press.
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2155-9856
DOI
10.4182/amt.2011.C8
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Abstract

Arthropod Management Tests 2011, Vol. 36 doi: 10.4182/amt.2011.C8 C8 BLUEBERRY (HIGHBUSH): Vaccinium corymbosum L., ‘Bluecrop’ Cesar Rodriguez-Saona Philip E. Marucci Center for Blueberry and Cranberry Research and Extension 125 A Lake Oswego Rd Chatsworth, NJ 08019 Phone: 609-726-1590 ext. 4412 Fax: 609-726-1593 E-mail: crodriguez@aesop.rutgers.edu Faruque Uz Zaman E-mail: zaman@aesop.rutgers.edu Robert Holdcraft E-mail: rholdcra@rci.Rutgers.edu Cranberry weevil: Anthonomus musculus (Say) Experiments tested the efficacy of Asana XL (grower standard), Assail 30SG, Avaunt 30WG, and Mustang Max EC against cranberry weevil in highbush blueberries. These experiments were conducted in four commercial blueberry cv. Bluecrop fields in Hammonton, New Jersey. Each field was divided into four, ~ 0.6-acre plots, with one side of all plots facing a wooded area. Insecticide treatments were assigned randomly to plots, and field was used as replicate. Treated plots were separated by a buffer row. Applications were made on 8–10 Apr with a Pak-Blast® model MBICO28 Sprayer (Rears Manufacturing Co., Eugene, OR) on a John Deere 5320N Tractor. The sprayer was calibrated to deliver 25 gal per acre at 150 PSI using eight nozzles with D5 orifices, yielding ~78 ml per bush. Pre-treatment cranberry weevil counts were taken on 6 April, and post-treatment counts were done on 12–14 Apr (4 DAT). Cranberry weevil adults were sampled using a white cloth beating sheet (Great Lakes IPM, Inc., Vestaburg, MI), by beating 1/5 of 40 different bushes in each plot. Total number of adult cranberry weevil per plot was divided by 8 to obtain the number of weevils per bush. Data were analyzed using ANOVA and means separation by Fisher’s LSD test at P = 0.05. Asana, Avaunt, and Mustang Max provided > 95% cranberry weevil control (Table 1). Table 1. No. Weevils per Bush (Mean±SE) Pre-Spray Post-Spray Treatment Rate 6 April 12-14 April % Control Assail 30SG 5.3 oz/ac 4.5 ± 1.6 a 2.2 ± 1.0 a 52.4 Asana XL 9.6 floz/ac 5.3 ± 1.2 a 0.0 ± 0.0 b 100.0 Avaunt 30WDG 6.0 oz/ac 5.3 ± 1.1 a 0.0 ± 0.0 b 99.4 Mustang Max EC 4.0 floz/ac 5.5 ± 1.2 a 0.3 ± 0.2 b 95.5 Means within a column followed by different letters are significantly different %Control = (1- (No. CBW Postspray / No. CBW Prespray)) × 100

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2011

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