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FLEA BEETLE CONTROL ON BURLEY TOBACCO, 2002

FLEA BEETLE CONTROL ON BURLEY TOBACCO, 2002 (F119) TOBACCO: Nicotiana tabacum L.(Burley), 'TN 90' Paul J. Semtner Virginia Tech Southern Piedmont Agricultural Research and Extension Center 2375 Darvills Road Blackstone, VA 23824 USA Tel: (434) 292-5331 Fax: (434) 292-5623 psemtner@vt.edu Lee Wright Southwest Virginia Agriculture Research and Extension Center 12326 VPI Farm Road Glade Spring, Virginia 24340 USA Tobacco flea beetle (TFB): Epitrix hirtipennis (Melsheimer) This trial was conducted at the Virginia Tech Southwest Virginia Agricultural Research and Extension Center, Glade Spring, VA to evaluate various insecticides applied as transplant drench (TD) and transplant water (TW) treatments for control of TFB on burley tobacco. Tobacco 'Tennessee 90' was transplanted into experimental plots on 24 May. Eleven treatments and an untreated check were established in a RCB design with 4 reps (Table 1). Plots were 8 x 30 ft (2 rows x 15 plants) and separated by single untreated border rows. A CO -pressurized backpack sprayer with an 8003E tip and operated at 30 psi was used to apply Admire and Platinum TD treatments in 20 fl oz of water to transplants in 288-cell float trays on 23 May, 1 day before transplanting. Additional water was used to wash the chemical residue off of the plants and into the media. Immediately after transplanting on 24 May, a measuring cup was used to apply the TW treatments at 4 fl oz (185 gpa) of solution/plant in the designated plots. Normal production practices were followed for fertilization, weed and disease control, and topping and sucker control. The growing season was warmer than normal and rainfall was adequate. TFB and TFB feeding holes were counted on 10 plants/plot once a wk for 4 wk after transplanting. Data were analyzed by ANOVA and significantly different means (P < 0.05) were separated by WD (k-ratio=100). Data were transformed to Log (x+1) before analysis. Actual means are presented in the tables. All treatments gave significant reductions in TFB and TFB feeding holes (Table 1). TD applications of Admire, Platinum and TM-44403 and TW applications of Platinum and TM-44403 gave excellent control of TFB. TW applications of Orthene TW and the lowest rate of Admire were the least effective treatments on 31 May, 7 days after transplanting and the low rate of Admire TW was the least effective treatment on 21 Jun (Table 1). TD applications of Admire and TM-44403 gave the greatest reductions in TFB feeding holes, while Orthene and Admire TW treatments were least effective (Table 1). The Platinum TD treatments were slightly less effective than TD applications of Admire and TM-44403. TW treatments were less effective against TFB feeding injury. TM-44403 and Platinum TW treatments were slightly less effective for reducing TFB feeding damage than the same chemicals applied as TW treatments, while the Admire TW treatments were much less effective than the same rates of Admire applied as TD treatments (Table 1). No phytotoxicity was observed in this study. This study indicates that TM-44403, Admire and Platinum give effective control of TFB and TFB damage. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

FLEA BEETLE CONTROL ON BURLEY TOBACCO, 2002

Arthropod Management Tests , Volume 28 (1) – Jan 1, 2003

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Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/28.1.F119
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Abstract

(F119) TOBACCO: Nicotiana tabacum L.(Burley), 'TN 90' Paul J. Semtner Virginia Tech Southern Piedmont Agricultural Research and Extension Center 2375 Darvills Road Blackstone, VA 23824 USA Tel: (434) 292-5331 Fax: (434) 292-5623 psemtner@vt.edu Lee Wright Southwest Virginia Agriculture Research and Extension Center 12326 VPI Farm Road Glade Spring, Virginia 24340 USA Tobacco flea beetle (TFB): Epitrix hirtipennis (Melsheimer) This trial was conducted at the Virginia Tech Southwest Virginia Agricultural Research and Extension Center, Glade Spring, VA to evaluate various insecticides applied as transplant drench (TD) and transplant water (TW) treatments for control of TFB on burley tobacco. Tobacco 'Tennessee 90' was transplanted into experimental plots on 24 May. Eleven treatments and an untreated check were established in a RCB design with 4 reps (Table 1). Plots were 8 x 30 ft (2 rows x 15 plants) and separated by single untreated border rows. A CO -pressurized backpack sprayer with an 8003E tip and operated at 30 psi was used to apply Admire and Platinum TD treatments in 20 fl oz of water to transplants in 288-cell float trays on 23 May, 1 day before transplanting. Additional water was used to wash the chemical residue off of the plants and into the media. Immediately after transplanting on 24 May, a measuring cup was used to apply the TW treatments at 4 fl oz (185 gpa) of solution/plant in the designated plots. Normal production practices were followed for fertilization, weed and disease control, and topping and sucker control. The growing season was warmer than normal and rainfall was adequate. TFB and TFB feeding holes were counted on 10 plants/plot once a wk for 4 wk after transplanting. Data were analyzed by ANOVA and significantly different means (P < 0.05) were separated by WD (k-ratio=100). Data were transformed to Log (x+1) before analysis. Actual means are presented in the tables. All treatments gave significant reductions in TFB and TFB feeding holes (Table 1). TD applications of Admire, Platinum and TM-44403 and TW applications of Platinum and TM-44403 gave excellent control of TFB. TW applications of Orthene TW and the lowest rate of Admire were the least effective treatments on 31 May, 7 days after transplanting and the low rate of Admire TW was the least effective treatment on 21 Jun (Table 1). TD applications of Admire and TM-44403 gave the greatest reductions in TFB feeding holes, while Orthene and Admire TW treatments were least effective (Table 1). The Platinum TD treatments were slightly less effective than TD applications of Admire and TM-44403. TW treatments were less effective against TFB feeding injury. TM-44403 and Platinum TW treatments were slightly less effective for reducing TFB feeding damage than the same chemicals applied as TW treatments, while the Admire TW treatments were much less effective than the same rates of Admire applied as TD treatments (Table 1). No phytotoxicity was observed in this study. This study indicates that TM-44403, Admire and Platinum give effective control of TFB and TFB damage.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2003

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