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EFFECTIVENESS OF NOVALURON IN CONTROLLING DIAMONDBACK MOTH IN CABBAGE, 2002

EFFECTIVENESS OF NOVALURON IN CONTROLLING DIAMONDBACK MOTH IN CABBAGE, 2002 (E12) CABBAGE: Brassica oleracea L. EFFECTIVENESS OF NOVALURON IN CONTROLLING DIAMONDBACK MOTH IN CABBAGE, 2002 Dakshina R. Seal University of Florida-IFAS Tropical Research and Education Center Homestead, FL 33031 Diamondback moth (DBM): Plutella xylostella (L.) Transplants were set on 10 Mar 2002 at Homestead, FL. Plots were two-beds wide on 36-inch centers, 25-ft long, and separated by a 5-ft alley. Plants were spaced 18 inches within the rows. Treflan 4E was incorporated 2 wk before planting for weed control. Treatments evaluated were: (1) SpinTor 2SC (6 oz/acre); (2) Proclaim WDG (4oz/acre); (3) Novaluron 0.83EC (6, 9, & 12 oz/acre); and (4) a nontreated check. Each treatment was replicated four times in a randomized complete block design. Application of all treatments was initiated after the appearance of Diamondback moth (DBM) larvae and continued on five dates- 11, 18, 25 May and 3 and 10 Jun. All insecticides were applied on foliage using a backpack sprayer with two nozzles per row at 30 psi delivering 70 gpa. No phytotoxicity was observed with any of the treatments. Evaluation of treatments was conducted 24 h after each application by counting all DBB larvae on randomly selected five plants/treatment plot. A prespray sample was counted on 5 May; and two additional samples were counted on 17 and 24 Jun after the last spray. Foliage was rated visually for larvae feeding damage on a scale of 0-6, where 0 indicates the worst feeding damage and 6 the no feeding damage. All insecticide treatments significantly reduced DBM larvae (Table 1.). Novaluron at 6 oz/acre did not consistently control DBM larvae across the sampling dates. Novaluron at 12 oz/acre showed maximum reduction of DBM larvae after the first application and consistently provided similar reduction across the sampling dates and did not differ from SpinTor. Novaluron (12 oz/acre) and SpinTor-treated plants had fewer DBM larvae than other treatments 2 wk after the last application of insecticides and differed significantly from the untreated check. Novaluron (12 oz/acre) and SpinTor treated plants had the lowest feeding damage among all treatments; but did not differ from Proclaim and Novaluron (9 oz/acre). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

EFFECTIVENESS OF NOVALURON IN CONTROLLING DIAMONDBACK MOTH IN CABBAGE, 2002

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

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Oxford University Press
Copyright
© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/28.1.E12
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Abstract

(E12) CABBAGE: Brassica oleracea L. EFFECTIVENESS OF NOVALURON IN CONTROLLING DIAMONDBACK MOTH IN CABBAGE, 2002 Dakshina R. Seal University of Florida-IFAS Tropical Research and Education Center Homestead, FL 33031 Diamondback moth (DBM): Plutella xylostella (L.) Transplants were set on 10 Mar 2002 at Homestead, FL. Plots were two-beds wide on 36-inch centers, 25-ft long, and separated by a 5-ft alley. Plants were spaced 18 inches within the rows. Treflan 4E was incorporated 2 wk before planting for weed control. Treatments evaluated were: (1) SpinTor 2SC (6 oz/acre); (2) Proclaim WDG (4oz/acre); (3) Novaluron 0.83EC (6, 9, & 12 oz/acre); and (4) a nontreated check. Each treatment was replicated four times in a randomized complete block design. Application of all treatments was initiated after the appearance of Diamondback moth (DBM) larvae and continued on five dates- 11, 18, 25 May and 3 and 10 Jun. All insecticides were applied on foliage using a backpack sprayer with two nozzles per row at 30 psi delivering 70 gpa. No phytotoxicity was observed with any of the treatments. Evaluation of treatments was conducted 24 h after each application by counting all DBB larvae on randomly selected five plants/treatment plot. A prespray sample was counted on 5 May; and two additional samples were counted on 17 and 24 Jun after the last spray. Foliage was rated visually for larvae feeding damage on a scale of 0-6, where 0 indicates the worst feeding damage and 6 the no feeding damage. All insecticide treatments significantly reduced DBM larvae (Table 1.). Novaluron at 6 oz/acre did not consistently control DBM larvae across the sampling dates. Novaluron at 12 oz/acre showed maximum reduction of DBM larvae after the first application and consistently provided similar reduction across the sampling dates and did not differ from SpinTor. Novaluron (12 oz/acre) and SpinTor-treated plants had fewer DBM larvae than other treatments 2 wk after the last application of insecticides and differed significantly from the untreated check. Novaluron (12 oz/acre) and SpinTor treated plants had the lowest feeding damage among all treatments; but did not differ from Proclaim and Novaluron (9 oz/acre).

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2003

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