Volume 60, Issue 1

Volume : 60
Issue : 1
   
Authors : Hamid SAKENIN CHELAV and Adel KHASHAVEH
Title : SHORT-TERM, MID-TERM AND LONG-TERM EFFECTIVENESS OF SilicoSec® AGAINST COWPEA WEEVIL
Abstract : The insecticidal efficacy of SilicoSec®; a formulation of diatomaceous earth (DE); was evaluated against cowpea weevil (Callosobruchus maculatus) in cowpea seed at three storage periods: 0, 3 and 6 months. The DE formulation was applied at three dose rates: 0.1, 0.5 and 1 g/kg. The experiments carried out at 25 °C and 55% RH and continuous darkness. The mortality of C. maculatus adults was recorded 72 h after exposure to DE-treated seeds. After mortality count, all insects (dead and alive) were removed from vials and the vials were kept under same condition for a further 35 days to assess progeny production. For adult's mortality, significant difference was noted between dose rates and mortality increased with increase in dose rate. In contrast, no significant difference was observed between the storage periods and efficacy of DE formulation was not affected by increasing the storage period. At the rate of 1 g/kg, 100% mortality was recorded after 0 to 6 months storage. For progeny production, significant differences were recorded for dose rate, storage period and associated interaction. In all storage periods, highest number of progeny was recorded at 0.1 g/kg and increasing in dose rate significantly decreased the progeny production. The results obtained in this research recommend that SilicoSec® at the rate of 1 g/kg could be used to control cowpea weevil at 6 months storage period.
For citation : Hamid SAKENIN CHELAV and Adel KHASHAVEH (2014): SHORT-TERM, MID-TERM AND LONG-TERM EFFECTIVENESS OF SilicoSec® AGAINST COWPEA WEEVIL. Agriculture & Forestry, Vol. 60. Issue 1: 75-82, 2014, Podgorica
Keywords : SilicoSec®, Cowpea weevil, Storage period
   
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ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

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