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CONTROL OF GRAPE BERRY MOTH WITH FENPROPATHRIN AND PHOSMET

CONTROL OF GRAPE BERRY MOTH WITH FENPROPATHRIN AND PHOSMET (C8) GRAPE: Vitis x labruscana Bailey, 'Concord' Michael C. Saunders Department of Entomology, The Pennsylvania State University 501 ASI Building University Park, PA 16802-3508 Tel: (814) 863-2979 Fax: (814) 865-3048 mcs5@psu.edu Sudha Nagarkatti Lake Erie Regional Grape Research and Extension Center Department of Entomology, The Pennsylvania State University 662 North Cemetery Road North East, PA 16428 Tel: (814) 725-4601 Fax: (814) 725-8531 snk1@psu.edu Patrick C. Tobin Department of Entomology, The Pennsylvania State University 501 ASI Building University Park, PA 16802-3508 Tel: (814) 863-7657 Fax: (814) 865-3048 pct106@psu.edu Grape berry moth (GBM): Endopiza viteana (Clemens) We evaluated Fenpropathrin (Danitol), Phosmet (Imidan), and the standard treatment of Sevin for grape berry moth (GBM) control in a commercial 'Concord' vineyard in North East, PA, in 1999. This vineyard has a wooded edge where wild grape serves as refuge for grape berry moth; hence, the vineyard had a history of high levels of infestation particularly along the wooded edge. The experimental design consisted of 8 x 5 m plots for each treatment and an untreated check, replicated four times in a RCB. Replicated blocks were oriented parallel to the wooded edge. Treatments were applied three times (once per grape berry generation; 16 Jun, 6 Jul, and 10 Aug) using a FMC vineyard boom sprayer operated at 100 psi with an application rate of 100 gal/acre. Treatments were evaluated by non-destructively counting the number of infested berries on 100 grape clusters per treatment plot 2 wk after each application. We also removed 100 clusters per treatment plot and counted the number of infested berries at the Sep harvest. Prior to the harvest sampling interval, grape berry moth damage in all plots was <3%. At harvest, however, Danitol, and Imidan both gave significantly better control than Sevin and the untreated check, while Imidan was significantly better than Danitol (Table 1.). There was no significant difference between Sevin and the untreated check, suggesting that Sevin has lost its efficacy against grape berry moth. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

CONTROL OF GRAPE BERRY MOTH WITH FENPROPATHRIN AND PHOSMET

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Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/28.1.C8
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Abstract

(C8) GRAPE: Vitis x labruscana Bailey, 'Concord' Michael C. Saunders Department of Entomology, The Pennsylvania State University 501 ASI Building University Park, PA 16802-3508 Tel: (814) 863-2979 Fax: (814) 865-3048 mcs5@psu.edu Sudha Nagarkatti Lake Erie Regional Grape Research and Extension Center Department of Entomology, The Pennsylvania State University 662 North Cemetery Road North East, PA 16428 Tel: (814) 725-4601 Fax: (814) 725-8531 snk1@psu.edu Patrick C. Tobin Department of Entomology, The Pennsylvania State University 501 ASI Building University Park, PA 16802-3508 Tel: (814) 863-7657 Fax: (814) 865-3048 pct106@psu.edu Grape berry moth (GBM): Endopiza viteana (Clemens) We evaluated Fenpropathrin (Danitol), Phosmet (Imidan), and the standard treatment of Sevin for grape berry moth (GBM) control in a commercial 'Concord' vineyard in North East, PA, in 1999. This vineyard has a wooded edge where wild grape serves as refuge for grape berry moth; hence, the vineyard had a history of high levels of infestation particularly along the wooded edge. The experimental design consisted of 8 x 5 m plots for each treatment and an untreated check, replicated four times in a RCB. Replicated blocks were oriented parallel to the wooded edge. Treatments were applied three times (once per grape berry generation; 16 Jun, 6 Jul, and 10 Aug) using a FMC vineyard boom sprayer operated at 100 psi with an application rate of 100 gal/acre. Treatments were evaluated by non-destructively counting the number of infested berries on 100 grape clusters per treatment plot 2 wk after each application. We also removed 100 clusters per treatment plot and counted the number of infested berries at the Sep harvest. Prior to the harvest sampling interval, grape berry moth damage in all plots was <3%. At harvest, however, Danitol, and Imidan both gave significantly better control than Sevin and the untreated check, while Imidan was significantly better than Danitol (Table 1.). There was no significant difference between Sevin and the untreated check, suggesting that Sevin has lost its efficacy against grape berry moth.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2003

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