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Studies were conducted in Niger to compare pheromone-baited trapping systems for monitoring adults of the millet stem borer, Coniesta ignefusalis (Hampson), a pest of pearl millet, Pennisetum glaucum (L.) R. Brown. A water-oil trap was effective after optimization of various trap parameters. A trap tray of 32-cm diameter was more effective and easier to handle than other sizes tested. Optimum trap shade size was 8-21 cm, positioned 2-5 cm above the tray. Motor oil, soap, or liquid detergent were more effective than vegetable oil as surfactants. The experimental trap caught significantly more male moths than four commercial traps. More moths were caught with large, thick polythene vial pheromone dispensers than small, thin vials, but the attractiveness of both declined significantly within 14 d. Trap catches were not greatly affected by tile height of the crop or by the height of the trap above ground level when the traps were placed individually at different sites. However, when traps were stacked at different heights at one site, more moths were caught in traps at heights of 0.10-0.50111 than at 1.30 and 2.0 m above ground level, regardless of crop height. This system is appropriate for monitoring of pest populations by subsistence farmers and national and international agricultural research stations in the Sahelian region of Africa.
Document Type: Research Article
Publication date: February 1, 1995
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.