Browsing by Author "Musa, Abdulrasak Kannike"

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    INSECTICIDAL ACTIVITY OF Citrus sinensis (L.) and Parkia biglobosa (Jacq.) EXTRACTS AGAINST Trogoderma granarium Everts
    (Agriculture and forestry, 2016) Musa, Abdulrasak Kannike; Lawal, Mujidat Temidayo
    In this study, ethanolic extracts of Citrus sinensis (L.) (leaves/peels) and Parkia biglobosa (Jacq.) (leaves/seeds) were screened for insecticidal activity against 4th larval instar and adults of khapra beetle, Trogoderma granarium Everts (Coleoptera:Dermestidae). Also examined were percentage seed damage, seed weight loss and viability of the seeds. Decorticated seeds of groundnut were treated with different concentrations (1, 3 and 5%) of the extracts against the adults while 5% concentration was tested against the larvae. The bioassay showed that the extracts had larvicidal and adulticidal activities which increased with increase in concentration and exposure time. The seed damage data were used to estimate the Beetle Perforation Index (BPI) indicating that P. biglobosa seed extract was the most effective with a BPI of 20.14%. The results of this study showed that C. sinensis and P. biglobosa extracts possess some insecticidal activity which may be associated with the presence of secondary metabolites (saponins, alkaloids, steroids, tannins, cardiac glycosides, flavonoids and phenols in them, This report shows that P. biglobosa seed extract could be recommended as a source of insecticidal agent in a pest management technique.
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    Pesticidal evaluation of teak and almond ethanol leaf extracts against two insect pests of sweet potato (Ipomea batatas L.)
    (Tropical Agriculture, 2022) Yusuf, Sa'adat Yetunde; Musa, Abdulrasak Kannike; Suleiman, Mustapha; Lawal, Mujidat Temidayo
    The cultivation of sweet potatoes is constrained by insect pests. This had led to the use of synthetic insecticides which are unsafe for humans and the environment. Although various studies have investigated the single application of plant material to control pests, this study employed the combination of two botanicals to suppress them. The aim was to evaluate the pesticidal effectiveness of teak and almond ethanol leaf extracts against Phyllotreta cruciferae and Cylas puncticollisinfesting sweet potato. The experiment was arranged in a randomised block design with three replications. The various treatments employed were single applications of almond (AL) and teak leaf (TL) extracts at 15% and 25% concentrations; mixed application of AL and TL extracts at AL15% + TL15%, AL15% + TL25%, AL25% + TL15% and, AL25% + ATL25% respectively, cypermethrin (0.15%) and a control. Data were collected on the number of the insect pests after treatments, sweet potato yield, and phytochemical screening of the botanicals. Analysis of variance indicated that the combination of AL and TL at 25% each significantly (P ≤ 0.05) lowered the population of insect pests to a level comparable to cypermethrin and lower than the single applications of the botanicals. There was a significant increase in yield on plots treated with AL + TL at 25% concentration each. Phytochemical analysis indicated the presence of some bioactive compounds in the botanicals. The combination of different botanicals may be a plausible sustainable alternative to synthetic pesticides in pest management