Laboratory evaluation of the toxicity of methanolic extract of African bush tea seed (&lt;i&gt;Hyptis suaveolens&lt;/i&gt; poit.) of the cowpea beetle (&lt;i&gt;Callosobruchus maculates&lt;/i&gt; fabricius).

Musa, AK

doi:10.4314/as.v7i2.1592

Cited by 1 publication

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“…(Musa, 2007), Hyptis suaveolens Poit. (Musa, 2008;2013), and Cymbopogon citratus Gaern (Dike and Mbah, 1992) were collected from the University of Ilorin campus and its environs. The leaves were air-dried for three weeks, ground separately and thereafter passed through a sieve to obtain fine powder.…”

Section: Seed Sterilization and Plant Powder Preparationmentioning

confidence: 99%

Suppression of damaging effects of <i>Callosobruchus maculatus</i> (F.) (Coleoptera: Chrysomelidae) by plant powders

Yusuf¹,

Musa²,

Adebayo³

et al. 2019

Agrosearch

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Powders prepared from plant species available in Nigeria are reported to possess ovicidal, larvicidal, pesticidal, antifeedant and repellent properties against various insect pests and are regarded as environmentally compatible pesticides. This study evaluated the action of Azadirachta indica A. Juss, Hyptis suaveolens Poit. Piper guineense Thonn. & Schum andCymbopogon citratus Gaern against the damaging effects of Callosobruchus maculatus (F.) in stored cowpea. The experiment was carried out at temperature of 30 ± 1 o C and relative humidity of 72 ± 3%. The plant powders were compared at the rate of 2.5 g per 50 g cowpea seeds including the untreated control. The experiment was laid out in a completely randomized design with three replications. The results showed that all the botanicals gave protection to the stored cowpea seeds and significantly (p<0.05) reduced mean adult emergence and seed weight loss (3.75-4.06%) caused by C. maculatus when compared with the untreated control (6.07%). The number of emerged adults from untreated seeds progressively increased with time of exposure compared to the treated seeds. The increasing order of effectiveness of the botanicals in terms of their insecticidal activities against C. maculatus was P. guineense, C. citratus, H. suaveolens, and A. indica. The study, therefore, shows that the botanicals could serve as protectants against C. maculatus in stored cowpea seeds.

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Section: Seed Sterilization and Plant Powder Preparationmentioning

confidence: 99%