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CONTROL OF CUCUMBER BEETLE ON EGGPLANT, 2003

CONTROL OF CUCUMBER BEETLE ON EGGPLANT, 2003 (E35) EGGPLANT: Solanum melongena L., 'Black Beauty' Dakshina R. Seal University of Florida-IFAS Tropical Research and Education Center Homestead, FL 33031 Phone: (305) 246-7001x 260 Fax: (305) 246-7003 E-mail: dseal@mail.ifas.ufl.edu Banded cucumber beetle (CB): Diabrotica balteata LeConte 'Black Beauty' eggplant seedlings were transplanted in a Rockdale soil on 11 Apr 2003. A RCB design was employed to provide four replicates with plots of two rows in width and 30 ft in length. Application of all treatments was initiated after the appearance of cucumber beetles and continued on 23 Jun and 5 Jul. All insecticides were applied on foliage using a backpack sprayer with two nozzles per row at 30 psi delivering 100 gpa. Evaluation of treatments was conducted on three dates after each application on 24 and 27 Jun and 4 Jul after the first application; and on 6, 9 and 13 Jul after the second 27 Jun and 4 after application; and on 6, 9 and 13 Jul after the second application. Effectiveness of treatments was determined by counting all live adults on each of five randomly selected plants per treatment plot. All dead adults were also collected from the ground surrounding each sampling plant. Data were analyzed using ANOVA and means were separated using DMRT (P ≤ 0.05). After the first application, mean numbers of live CB were significantly fewer in plants treated with various insecticides than the nontreated plants (Table 1). Populations of CB increased in all treated plants four days after the first application. However, significantly fewer live adults were observed in plants treated with Baythroid XL at 0.025 lb (AI)/acre than the nontreated plants; and did not differ from Sevin. A similar pattern of population reduction was observed after the second application of treatments. Mean numbers of dead beetles were significantly more in plants treated with Baythroid XL at 0.025 lb (AI)/acre and Sevin than the non-treated plants (Table 2). No dead insects were collected on the third sampling dates after the first application of insecticides. Similar pattern of increase in the mean numbers of dead cucumber beetle adults was observed after the second application of Baythroid XL at 0.025 lb (AI)/acre and Sevin. There was no phytotoxicity with any of the treatments. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

CONTROL OF CUCUMBER BEETLE ON EGGPLANT, 2003

Seal, Dakshina R.
Arthropod Management Tests , Volume 29 (1) – Jan 1, 2004
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Oxford University Press
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© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/29.1.E35
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Abstract

(E35) EGGPLANT: Solanum melongena L., 'Black Beauty' Dakshina R. Seal University of Florida-IFAS Tropical Research and Education Center Homestead, FL 33031 Phone: (305) 246-7001x 260 Fax: (305) 246-7003 E-mail: dseal@mail.ifas.ufl.edu Banded cucumber beetle (CB): Diabrotica balteata LeConte 'Black Beauty' eggplant seedlings were transplanted in a Rockdale soil on 11 Apr 2003. A RCB design was employed to provide four replicates with plots of two rows in width and 30 ft in length. Application of all treatments was initiated after the appearance of cucumber beetles and continued on 23 Jun and 5 Jul. All insecticides were applied on foliage using a backpack sprayer with two nozzles per row at 30 psi delivering 100 gpa. Evaluation of treatments was conducted on three dates after each application on 24 and 27 Jun and 4 Jul after the first application; and on 6, 9 and 13 Jul after the second 27 Jun and 4 after application; and on 6, 9 and 13 Jul after the second application. Effectiveness of treatments was determined by counting all live adults on each of five randomly selected plants per treatment plot. All dead adults were also collected from the ground surrounding each sampling plant. Data were analyzed using ANOVA and means were separated using DMRT (P ≤ 0.05). After the first application, mean numbers of live CB were significantly fewer in plants treated with various insecticides than the nontreated plants (Table 1). Populations of CB increased in all treated plants four days after the first application. However, significantly fewer live adults were observed in plants treated with Baythroid XL at 0.025 lb (AI)/acre than the nontreated plants; and did not differ from Sevin. A similar pattern of population reduction was observed after the second application of treatments. Mean numbers of dead beetles were significantly more in plants treated with Baythroid XL at 0.025 lb (AI)/acre and Sevin than the non-treated plants (Table 2). No dead insects were collected on the third sampling dates after the first application of insecticides. Similar pattern of increase in the mean numbers of dead cucumber beetle adults was observed after the second application of Baythroid XL at 0.025 lb (AI)/acre and Sevin. There was no phytotoxicity with any of the treatments.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2004

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