Insecticidal activity of selected essential oil extracts against common cutworm, spodoptera litura fabricius (Lepidoptera: Noctuidae)

Issue Date

9-2017

Abstract

Essential oils from Alpinia pyramidata (Blume), Lantana camara (Linnaeus), Coleus amboinicus (Loureiro) and Curcuma longa (Linn.) were evaluated in the laboratory for their insecticidal activities against third instar larval of common cutworm, Spodoptera litura Fabricius (Lepidoptera: Noctuidae). Among the four essential oils, Cu. longa was the most toxic to cutworm (LC50 = 5.93 mg/mL) when applied through leaf residue film method. When applied topically, essential oil from A. pyramidata was the most toxic (LD50 = 693.86 µg/g insect) which also provided the highest antifeedant activity against cutworm at 16 mg/mL acetone. Essential oil from L. camara ranked second in providing contact toxicity both through topical application and leaf residue film method. Essential oil from Cu. longa showed the highest repellency against cutworm at 16mg/mL acetone. Essential oil from L. camara showed remarkable insect growth regulatory activities against cutworm expressed by a high number of larval-pupal intermediates. Meanwhile, essential oil from Cu. longa showed high abnormalities among the pupae and adults produced. Both the latter essential oils also provided short life span of seven to eight days when applied on cutworm larvae; a normal adult lived for about nine days when provided with 10% honey solution as food. In view of their overall pesticidal properties, essential oils from L. camara and Cu. longa have potential to be exploited as botanical insecticides for cutworm management.

Source or Periodical Title

Philippine Journal of Science

ISSN

0031-7683

Volume

146

Issue

3

Page

247-256

Document Type

Article

Physical Description

illustrations, tables

Language

English

Subject

Alpinia pyramidata, Botanical insecticide, Coleus amboinicus, Curcuma longa, Lantana camara, Spodoptera litura

Digital Copy

yes

En – AGROVOC descriptors

Alpinia pyramidata, Botanical insecticide, Coleus amboinicus, Curcuma longa, Lantana camara, Spodoptera litura

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