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BLUEBERRY SPANWORM CONTROL, 2001A

BLUEBERRY SPANWORM CONTROL, 2001A (C4) BLUEBERRY: Vaccinium angustifolium Aiton, 'lowbush' J. A. Collins and F. A. Drummond Department of Biological Sciences University of Maine Orono, ME 04469 Phone: (207) 581-2960 Fax: (207) 581-2969 E-mail: judith.collins@umit.maine.edu Blueberry spanworm (SW): Itame argillacearia (Packard) Materials were applied on 23 May to 20 by 20-ft plots in a fruit-bearing blueberry field in Columbia, Maine. There were four replications of each treatment and a minimum 5-ft untreated buffer strip around each plot. Treatments were blocked according to prespray population levels. Insecticides were applied in 25 gal of water per acre using a CO -propelled, 80-inch boom sprayer (76-inch swath), with four, flat spray 8002VS TeeJet nozzles operating at 35 psi. Larvae were second to fourth instar and blueberry plants were tight to loose cluster stage. On sample dates indicated in the table, 10 sweeps with a standard 12-inch sweep net were taken systematically through the central area of each plot avoiding plot boundaries. SW, if any, larvae were counted and then distributed back into the same plot. SpinTor gave very good control. The EPA-exempt formulation of Ecoval insecticide concentrate was not effective. No apparent phytotoxicity was observed on any plot. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

BLUEBERRY SPANWORM CONTROL, 2001A

Collins, J. A.; Drummond, F. A.
Arthropod Management Tests , Volume 27 (1) – Jan 1, 2002
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Oxford University Press
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© Published by Oxford University Press.
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2155-9856
DOI
10.1093/amt/27.1.C4
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Abstract

(C4) BLUEBERRY: Vaccinium angustifolium Aiton, 'lowbush' J. A. Collins and F. A. Drummond Department of Biological Sciences University of Maine Orono, ME 04469 Phone: (207) 581-2960 Fax: (207) 581-2969 E-mail: judith.collins@umit.maine.edu Blueberry spanworm (SW): Itame argillacearia (Packard) Materials were applied on 23 May to 20 by 20-ft plots in a fruit-bearing blueberry field in Columbia, Maine. There were four replications of each treatment and a minimum 5-ft untreated buffer strip around each plot. Treatments were blocked according to prespray population levels. Insecticides were applied in 25 gal of water per acre using a CO -propelled, 80-inch boom sprayer (76-inch swath), with four, flat spray 8002VS TeeJet nozzles operating at 35 psi. Larvae were second to fourth instar and blueberry plants were tight to loose cluster stage. On sample dates indicated in the table, 10 sweeps with a standard 12-inch sweep net were taken systematically through the central area of each plot avoiding plot boundaries. SW, if any, larvae were counted and then distributed back into the same plot. SpinTor gave very good control. The EPA-exempt formulation of Ecoval insecticide concentrate was not effective. No apparent phytotoxicity was observed on any plot.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2002

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