Effect of Tasmanian blue gum (Eucalyptus globulus Labill.) leaf extract on cowpea weevil (Callosobruchus maculatus [Fabricius, 1775], Coleoptera: Chrysomelidae)

Samuel Femi BABATUNDE, Abdulrasak Kannike MUSA

Abstract


A laboratory study was carried out to examine the efficacy of solvent extract of Eucalyptus globulus leaves in reducing post-harvest losses caused by cowpea weevil (Callosobruchus maculatus) on cowpea seed variety RSH 256. 450 g of E. globulus leaf powder were put in 1000 ml flask and 450 ml of n-hexane was used as the solvent. The extract was tested at dosages of 50, 100 and 150 µl 50 g-1 of cowpea grains on the weevil in stored cowpea. The different rates of treatment recorded significant differences (p < 0.05) in causing adult mortality compared to the untreated control. The different rates of treatment also recorded significant differences (p < 0.05) in emergence of F1 adults of each treatment compared to the control. The percentage masst loss and grain damage were also suppressed as a result of treatment with the plant material compared to the untreated control. However, among the treatments 150 µl 150 g-1 cowpea recorded the highest adult mortality rate and lowest emergence while control had the lowest mortality rate and the highest emergence of the insect. The rates of application were indicative of bioactive characteristics of the plant extract.


Keywords


cowpea; Callosobruchus maculatus; Eucalyptus globulus; leaf exctracts; biopesticides

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References


Adebayo, T. & Gbolade, A. A. (1994). Protection of stored cowpea from Callosobruchus maculatus using plantproducts. Insect Science and its Application, 15, 185-189. https://doi.org/10.1017/S1742758400015435

Bohinc, T., Horvat, A., Ocvirk, M., Košir, I. J., Rutnik, K., & Trdan, S. (2020). The first evidence of the insecticidal potential of plant powders from invasive alien plants against rice weevil under laboratory conditions. Applied Sciences, 10(21), 7828. https://doi.org/10.3390/app10217828

Bohinc, T., Vayias, B., Bartol, T. (2013). Assessment of insecticidal efficacy of diatomaceous earth and powders of common lavender and field horsetail against bean weevil adults. Neotropical Entomology, 42, 642–648. https://doi.org/10.1007/s13744-013-0168-7

Deedat, Y.O. (1994). Problems associated with the use of pesticides: an overview. Journal of Agricultural Science, 93,735-747.

Enan E (2001) Insecticidal activity of essential oils: octop-aminergic sites of action. Comparative Biochemistry and Physiology, 130, 325–337. https://doi.org/10.1016/S1532-0456(01)00255-1

Enan, E.E. (2004). Molecular and pharmacological analysis of an octopamine receptor from American cockroachand fruit fly in response to plant essential oils. Archives of Insect Biochemistry and Physiology, 59, 161-171. https://doi.org/10.1002/arch.20076

Haines, C.P. (1991). Insect and Arachnids of tropical Stored Products: Their biology and identification. A laboratory manual (second edition). Storage Department, Tropical Development and Research Institute, London. 286 pp

Hall, A.E. and Patel, P.N. (1985). Breeding for resistance to drought and heat, in: Singh S.R. and Rachie K.O.(eds). Cowpea Research, Production and Utilization. Wiley, New York, pp 137-151.

Hall, A.E., (2004). Breeding for adaptation to drought and heat in cowpea European Journal of Agronomy, 21, 447-454. https://doi.org/10.1016/j.eja.2004.07.005

Hall, A.E., Ismail, A.M., Ethlers, J.D., Marfo, K.O., Cisse, N., Thiaw, S. and Close, T.J. (2002). Breeding cowpeas for tolerance to temperature extremes and adaptation to drought. In: Fatokun C.A, Tarawali S.A, Singh B.B, Kormawa P.M, Tamo M (eds) Challenges and Opportunities for Enhancing Sustainable Cowpea Production.International Institute of Tropical Agriculture, Ibadan, Nigeria. Pp 14-21.

Iheanacho, A.C., Olukosi, J.O., and Ogungbile A.O.(2000). EconomicEfficiency of Resource Use in Millet-basedCropping systems in Borno State of Nigeria. NigerianJournal of Tropical Agriculture, 2, 23-34.

Isman, M.B. (2008). Botanical insecticides: for richer, for poorer. Pest Management Science, 64, 8-11. https://doi.org/10.1002/ps.1470

Langyintuo, A. S., Lowenberg-DeBoer, J., Faye, M., Lambert,D., Ibro, G., Moussa, B., Kergna, A., Kushwaha, S.,Musa, S. & Ntoukam, G. (2003). Cowpea supply and demand in West and Central Africa. Field Crops Research, 82, 215–231. https://doi.org/10.1016/S0378-4290(03)00039-X

Longe, O.O. (2011). Investigations into fumigant effect of commercially produced eucalyptus oil and Eugenia aromatica dust against Callosobruchus maculatus (Fabricius). 2010 International Conferenceon Biology, Environment and ChemistryIPCBEE.IACSIT Press, Singapore, 1. 439-442.

Monfankye R., (2014).The management of field pests on Cowpea (Vigna unguiculata (L.) Walp.) using botanicals [tobacco (Nicotiana tabacum) leaves, neem (Azadirachta indica) leaves, ginger (Zingiber officinale) rhizomes and onion (Allium cepa) bulbs]. Master of Science (Environmental Science), Kwame Nkrumah University of Science and Technology, Ghana, 85p.

Ogunwolu, O., and Idowu, O. (1994). Potential of powdered Zanthoxylum zanthoxyloides (Rutaceae) root bark and Azadirachta indica (Meliaceae) seed for the control of the cowpea seed bruchid, Callosobruchus maculatus (Bruchidae) in Nigeria. Journal of African Zoology, 108.

Okonkwo, E. U., and Ewete, F. K. (1999). Toxicity of Dennettia tripetala and Piper guineense seed powders and oils against Callosobruchus maculatus Fabricius (Coleoptera: Bruchidae) and Sitophilus zeamais Motscchulsky (Coleoptera: Curculionidae) in Nigeria. Journal of Herbs, Spices and Medicinal Plants, 1, 1-8.

Oluma, H.O.A. and Garba, I.U. (2002).Screening of Eucalyptus globulus and Ocimum gratissimum (Clocimum) for fungitoxic properties against Pythium aphanidermatum. Nigerian Journal Biotechnology, 13, 49-54.

Shaw, R.H. (1988). Climatic requirement. pp. 609-638. In: G.F.Sprague (Ed.), Corn and corn improvement, AgronomyMonograph No 18 ASA-CSSA-SSSA, Madison, Wisconsin, USA. https://doi.org/10.2134/agronmonogr18.3ed.c10

Singh, B.B. (2002). Recent genetic studies in cowpea. In: Fatokun C.A., Tarawali, S.A., Singh, B.B., Kormawa, P.M., Tamo, M. (eds). Challenges and Opportunities for Enhancing Sustainable Cowpea Production. International Institute of Tropical Agriculture. Ibadan, Nigeria. Pp 3-13.

Praveen, P.M., & N. Dhandapani (2001). Eco-friendly management of major pests of okra (Abelmoschus esculentus (L.) Moench), Journal of Vegetable Crop Production, 7(2), 3-12. https://doi.org/10.1300/J068v07n02_02




DOI: http://dx.doi.org/10.14720/aas.2020.116.2.1689

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