Evaluation of three plant powders as protectants of bambara groundnut against Callosobruchus maculatus F. (Coleoptera: Chrysomelidae) infestation and damage.

Autor: Ugwu, J. A., Aderemi, F. T., Alabi, O. Y., Kareem, K. T.
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Zdroj: International Journal of Tropical Insect Science; Oct2022, Vol. 42 Issue 5, p3273-3281, 9p
Abstrakt: Plant powders of Piper guineense, Aframomum melegueta and Zanthoxylum zanthoxyloides were evaluated as protectants of Bambara Groundnut (BG) against Callosobruchus maculatus (F.) infestation and damage under laboratory conditions. Actellic 2% dust (synthethic insecticide) was used as standard check, while untreated seeds served as control. Powders were applied at 2.5 g / 100 g, 5 g / 100 g, and 10 g / 100 g, and Actellic dust at 1.0 g / 100 g, 2.0 g / 100 g and 3.0 g / 100 g of BG seeds. All the plant powders proved potent against C. maculatus at high dosage application. The efficacy of plant powders increased with increase in dosage and exposure period. Piper guineense and Z. zanthoxyloides applied at 10 g / 100 g of BG effectively reduced number of eggs laid (25.33 and 36.56, respectively) compared to other plant powders. The highest adult mortality of 80.67% was recorded from Z. zanthoxyloides treated seeds after 120 h post treatment, followed by 78.33% (P. guineense). All adult beetles on Actellic 2% dust died (100% mortality) after 24 h post treatment. The synthetic substance reduced oviposition, adult emergence and seed damage. Weevil perforation index was < 50 for the seeds treated with P. guineense, Z. zanthoxyloides and Actellic 2% dust. Plant powders of P. guineense and Z. xanthoxyloides at 10 g /100 g seeds were efficacious against C. maculatus, thus they could be successfully incorporated in integrated pest management of storage insect pests. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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