Suppressing infestation of stored pearl millet Pennisetum glau-cum (-) R. Br. by Tribolium castaneum (Herbst) with insecti-cidal essential oils in Maiduguri, Nigeria

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Lale, N.E.S. and Ajayi, F. A. 2000. SUPPRESSING INFESTATION OF STORED PEARL MILLET.pdf (4.6 MB)

Date

2000-02-15

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Department of Agronomy, Nasarawa State University Keffi

Abstract

The insecticidal, larvicidal and antibiotic effects of three essential oils obtained from clove (Syzgium aromaticum (L.) Merr. et L. M. Perry), West African black pepper (WABP) (Piperguineense Schumach. et Thonn.) and ginger (Zingiber officinale Rose.) were evaluated against the rust-red flour beetle, Tribolium castaneum (Hbst.), infesting stored pearl millet in Maiduguri, Nigeria. Clove or WABP oil was significantly more toxic to adults and larvae of T. castaneum than ginger oil. At the dosage of 100 mg/5 g seed, clove, WABP and ginger oils caused 96.3, 100 and 13.2 % adult mortalities, respectively, and 65.7, 83.4 and 9.6 % larval mortalities, respectively. Application of clove or WABP oil at the rate of 80 mg/5 g seed completely suppressed the development of T. castaneum adults and larvae in millet grains.

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Keywords

Insecticidal; larvicidal; antibiotic effects; essential oils; Tribolium castaneum; Tenebrio- nidae; pearl millet; Pennisetum glaucum

Citation

epartment of Crop Science, Faculty of Agriculture, University of Maiduguri, p. M. B. 1069, Maiduguri, Nigeria ا Current address of corresponding author: •Institute for Plant Pathology and Plant Protection, Entomological Section, Georg-August-University, Grisebachstr. 6, D-37077 Goettingen.

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https://keffi.nsuk.edu.ng/handle/20.500.14448/3031

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