The use of essential oils for the control of <i>Callosobruchus subinnotatus</i> (Pic) in stored <i>Vigna subterranea</i> L.

Vortrag

Autor/innen

  • Sylvia BasseyUmoetok Department of Crop Science, University of Calabar, Nigeria
  • Boniface Effiong Archibong Department of Crop Science, University of Calabar, Nigeria
  • Simon Idoko Okweche Department of Forestry and Wildlife Resources Management, University of Calabar, Nigeria

DOI:

https://doi.org/10.5073/jka.2018.463.103

Schlagworte:

insecticidal action, repellency, contact toxicity, fumigant action, LC50, weight loss

Abstract

Studies were conducted in the Crop Science laboratory, University of Calabar to evaluate the insecticidal actions of essential oils (EOs) of Xylopia aethiopica, Dennetia tripetala, Pysostigma venenosum and Senna hirsuta in the management of Callosobruchus subinnotatus. The EOs were extracted using soxhlet apparatus with n-Hexane as the solvent. Four concentrations (0.25%, 0.50%, 1.00% and 2.00 %) and n-Hexane as control were laid out in completely randomized design with three replications. Parameters assessed included repellency, fumigant action, weight loss as well as Lethal concentration (LC50) of the treatments to the beetles at the lowest concentration of 0.25%. The EO of Senna hirsuta treated samples generally resulted in significantly (P > 0.05) lower weight loss than n-hexane treated samples. LC50 computation revealed that D. tripetala and P. venenosum (LC50 0.22 at 48 hrs) were most efficacious against C. subinnotatus. The result supports the use of the test plants by small scale farmers in the protection of stored V. substerranea against C. subinn

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Veröffentlicht

2018-10-25

Ausgabe

Nr. 463 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018

Rubrik

Session 5: Physical and Biological Control

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