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International Journal of Agricultural Research
  Year: 2012 | Volume: 7 | Issue: 2 | Page No.: 58-68
DOI: 10.3923/ijar.2012.58.68
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Efficacy of Melochia corchorifolia L. (Sterculiaceae) on Feeding Behavior of Four Lepidopteran Pests

Manickam Pavunraj, Kathirvelu Baskar and Savarimuthu Ignacimuthu

Experiments were carried out to assess the pesticidal effects of solvent extracts of Melochia corchorifolia leaves, their fractions and new oil formulation consisting of neem and karanj oils against four lepidopteran pests viz., Helicoverpa armigera (Hub.), Spodoptera litura (Fab.), Erias vittella (Fab.) and Leucinodes orbonalis (G.) at 1% concentration. Antifeedant activity was determined by leaf disc no-choice method. Ethyl acetate extract of M. corchorifolia exhibited maximum antifeedant activity (54.24%). It was subjected to fractionation using column chromatography. Among thirteen fractions obtained, ninth fraction showed maximum antifeedant activity against all tested insects at 1000 ppm concentration. Phytochemical analysis of ninth fraction showed the presence of steroids and alkaloids. This active fraction was mixed with neem and karanj oils and evaluated against selected lepidopteran pests. Formulations 1 (F1) (neem+pongam oil+active fraction) showed good antifeedant activity of 63.75, 78.94, 84.69 and 78.96% against H. armigera, S. litura, E. vittella, L. orbonalis, respectively. This plant could be considered to prepare botanical pesticide.
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  •    Hypericum hookerianum (Wight and Arn.) as a Potential Bio-Pesticide to Control Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)
  •    Effect of Hadda Beetle, Epilachna vigintioctopunctata Fab. (Coleoptera: Coccinellidae) Infestation on Eggplant Leaf (Solanum melongena L.) and Bio-control Potential of Essential Oil Formulations
  •    Bioefficacy of Clerodendrum phlomidis Linn. f. and Flueggea leucopyrus (Koen.) Willd. against Earias vittella Fab.
  •    Bio-efficacy of Solanum pseudocapsicum L. (Solanaceae) against Black Cutworm, Agrotis ipsilon Hufnagel (Lepidoptera: Noctuidae)
  •    Insecticidal Activity of Some Wild Plant Extracts Against Cotton Leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)
  •    The Feeding Response of Epilachna indica (Coleoptera: Coccinellidae: Epilachninae) Towards Extracts of Azadirachta indica
  •    Bioinsecticidal Compounds of Celastraceae-the Spindle Tree Family
  •    Effects of a Commercial Neem Insecticide ((Neem AzalTM-T/S) on Early and Late Developmental Stages of the Beet Armyworm, Spodoptera exiqua (Hubner) (Lepidoptera: Noctuidae)
  •    Chrysanthemum Methanolic Extracts as Potential Insecticidal Sources on Tribolium confusum Du Val (Coleoptera: Tenebrionidae)
How to cite this article:

Manickam Pavunraj, Kathirvelu Baskar and Savarimuthu Ignacimuthu, 2012. Efficacy of Melochia corchorifolia L. (Sterculiaceae) on Feeding Behavior of Four Lepidopteran Pests. International Journal of Agricultural Research, 7: 58-68.

DOI: 10.3923/ijar.2012.58.68






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