• Ibrahim Tijjni
  • N. Abdullahi
Keywords: Biopesticides, Mahogany, Organic Agriculture, Root-knot nematode


A Field and screen house experiments were carried out to test the efficacy of mahogany (Khaya senegalensis L) bark powder at different concentration for the management of root-knot nematodes on cowpea. Its efficacy was compared with that of synthetic nematicide (cabofuran) as standard check. Twelve treatments were replicated four times in a completely randomized design. Each treatment was inoculated with 0 or 5000 eggs of Meloidogyne spp. extracted from the roots of highly susceptible garden egg (Solanum gilo) using 0.52 % a.i. sodium hypochlorite (NaOCl).Two replications were terminated at 60DAI to obtain data on number of galls and final nematode populations. Data were collected at 4, 6 and 8WAI on plant height, stem girth, number of days to 50 % flowering, number of pods/plant and number of seeds/pod. Data obtained were subjected to Analysis of Variance. Means were separated using Least Significant Difference at 5 % level of probability. Correlation analyses were performed on all the parameters assessed. Results obtained showed that 60g bark powder of the mahogany plant significantly (PË‚0.05) reduced the number of galls and population of the nematodes compared to the other treatments. The result also revealed that inoculated seedlings treated with 60g mahogany bark powder recorded higher value on plant height, stem girth, number of pods/plant, number of seeds /pod and seeds weight/plan when compared with other treatments and statistically significant at (PË‚0.05).Correlations between root galls, with plant height, stem girth, number of pods, plant, number of seeds/pod and seed weight/plant were negative and significant at


Adegbite, A. A. and Adesiyan, S. O. (2005). Root extracts of plants to control root-knot nematode on edible soybean. World Journal of Agricultural Sciences 1:18-21.

Adegbite, A.A. (2011). Effect of some indigenous plant extracts as inhibitors of egg hatch in root knot nematode (Meloidogyne incognita Race 2). American Journal of Experimental Agriculture. 1(3): 96-100

Adegbite, A.A and Agbaje, G.O. (2007). Efficacy of Furadan in the control of root-knot nematode (M. incognita race 2) in hybrid yam varieties in south-western Nigeria, World Agricultural Science, 2:256-262

Ademola, I.O., Fagbemi, B.O., Idowu, S.O. (2004). Evaluation of the athelmintic activity of Khaya senegalensis extract against gastrointestinal nematodes of sheep: in vitro and in vivo studies. Veterinary Parasitology122: 151-164.

Adesiyan, S. 0., Caveness, F. E., Adeniyi, M. O. and Fawole, B. (2000). Nematode Pests of Tropical Crops. Heinemann Educational Books (Nigeria) Plc.

Agbogidi, O. M. (2010). Screening six cultivars of cowpea (Vigna unguiculata (L.) Walp) for adaptation to soil contaminated with spent engine oil.Journal of Environmental Chemistry and Ecoloxicology. 7: 103-109.

Agu, C.M. (2008). Root gall nematode diseases of pineapple as affected by seed material, amount and type of organic soil amendment. Plant Science Research 1 (2): 6-39.

Ajibade, S.R. and Amusa,N.A (2001). Effects of fungal diseases on some cowpea lines in humid environment of South-Western Nigeria. Journal of Sustainable Agriculture and Environment 3:246-253.

Akhtar, M. and Mahmood, I. (1994). Control of Plant-Parasitic Nematodes with ‘Nimin’ and some plant-soils by Bare-Root dip treatments. Nematologica Journal of Mediterranean 21:89-92.

Chindo, P.S, Khan, F. A. (1986). Effects of organic amendments with poultry manure on the damage caused by root- knot nematodes. International Nematoogy Network, Newsletter 3(4): 30 – 33.

Doncaster, C.C. (1962). Acounting dish for nematodes. Nematologica 7: 334-336

Enyiukwu, D.N.; Awurum, A.E., Ononuju,C.C and Nwaneri, A. (2014).Significance of characterization of secondary metabolites from extracts of higher plant in plant disease management. International journal of Advanced Agric Research 2:8-28.

Fabiyi, O.A, Olatunji, G.A, and Olagbenro, M.O (2016). Response of the root-knot Nematode-infected Celosia argentea to Bark Extracts of Khaya ivorensis. Ife Journal of Agriculture 28 (2) 24-36pp

FAOSTAT, (2017).http://fao.org/faostat/en Food and Agricultural Organization of the United Nations. Rome, Italy.Accessed on 15th January, 2019.

Fatoki, O.K. and Fawole, B. (1999). In vitro toxicity of some selected plant extracts on eggs and second stage juveniles of Meloidogyne incognita. African Journalof Plant protection. 9: 83-92.

Hussey, R. S. and Barker, K. R. (1973). A comparison of methods of collecting egg of Meloidogyne spp., including a new technique. Plant Disease Report. 57: 1025-1028.

Iwu M (1993).Hand book of African medicinal plants, Pharmacognostical profile of selected medicinal plants. CRC Press Inc. pp. 196-197.

Karssen, G. and Moens, M. (2006). Root-knot nematodes. pp. 59-90. In: Perry, R. N. and Moens, M. (Eds). Plant Nematology. CABI publishing.

Khan, A. F. (1990). Nematicidal potential of some naturally growing plants against Pratylenchus zeae. Reveue nematology, 13(4), 463-465.

Khan, H. U., Ahmed, W. And Khan, M. A. (2000). Evaluation of resistance of fifteen tomato cultivars against root-knot nematode (Meloidogyne incognita), Pakistan Journal of Phytopathology, 12: 50 -52

Kumar, N. and Singh K.P. (2011). Bioefficacy of spore suspensions and mass culture of Dactylaria brochopaga on Meloidogyne incognita [Kofoid and White) Chitwood causing root-knot disease of tomato (Lycopersicon esculentum Mill.).Asian International Plant Pathology, 5(1): 54-61.

Liman, B., Ibrahim, M., Ibrahim, N.T.and Rabah, A.B. (2010). Effect of Mahogany (Khaya senegalensis L) Leaf Extract on Root-Knot Nematode of Tomatoes (Lycopersicum esculentum L.) Nigerian Journal of Basic and Applied Science, 18(2): 272-276

Mishra, S. D. (1992). Nematode pests of pulse crops In: Nematodes pests of Vegetable crops, D. S. Bhatti and R. K.Walia, (eds.) CBS Publishers and Distributors, Delhi India. 140pp.

Nakatani, M., Abdelgaleil, S. A, Kurawaki, J., Okamura, H., Iwagawa, T.,and Doe, M (2001). Antifeedant rings B and D opened limonoids from Khaya senegalensis. Journal of National Production, 64: 1261-1265.

Nakatani, M., Abdelgaleil, S.A., Kassem, S.M., Takezaki, K., Okamura, H.,Iwagawa, T. and Doe, M. (2002). Three new modified limonoids from Khaya senegalensis. Journal of National Production, 65: 19-216.

Netscher, C. and Sikora, R. A.; (1990).Nematode parasites of vegetables; in: Plant Parasitic Nematode in Subtropical and Tropical Agriculture, edited by Luc, M., Sikora, R. A. and Bridge, J.; chap. 7; C.A.B. International.

Odihirin, R. A. (1981). Screening of some West African cowpeas for resistance to root-knot nematodes, Meloidogyne incognita and M. javanica. Proceedings of the Third Planning Conference on Root-knot Nematodes, Meloidogyne spp. November 16- 20, 1981, llTA Ibadan, p. 232- 240.

Odinakachi , C.C., Madubuko, A.C. and Chuka, O.G. (2015). Efficacy of some Botanicals in the Control of Root-knot Nematode Disease of Cowpea (Vigna unguiculata) Journal of Global Biosciences 4(4) 1966-1970

Ogaraku, A.O. (2007) Effect of animal manure on susceptible of cowpea VAR.Moussa local to infection by root-knot nematode; M. javanica Treub. Pakistan journal of Biological Science 10(17):2980-2983.

Olowe, T .O.(1992). Economic importance of nematode legumes and cereal crops in Nigeria: ln proceedings of the first regional symposium on the biology and control of nematode pests of food crops in Africa, 61-91. (eds. B. Fawole, O.A. Egunjobi, S.O. Adesiyan, J.O. Babatola and A.A. ldowu)

Olowe, T.O. (2005). Effect of cowpea cropping system on the root knot nematodes Meloidogyne spp. in Nigeria. International journal of Nematology.15: 21-29.

Quin, F. M. (1997). Importance of cowpea. Pp. Ix-xii In: Advances in cowpea research Co-publication of IITA and JIRCAS IITA, Ibadan Nigeria. Proceeding of the 2nd Cowpea Research Conference held in Accra, Ghana 3-7 September, 1995, p190-196.
Roberts, P. A. (1987). The influence of planting date of carrot and Meloidogyne incognita reproduction and injury to roots. Nematologica 33: 335 - 342.

Sikora, R. A. and Fernandez, E. (1990). Nematodes parasites of vegetables. pp319 - 392 In: Plant parasitic nematodes in Subtropical and Tropical Agriculture. Luc, M. Sikora, R. A. and Bridge, J. (eds.) 1st edition, Wallingford, UK, CABI Bioscience Publication. 917pp

Singh, B. B., Ehlers, J. D. Sharma, B. And Freirefilho, F. R. (2003). Recent progress in cowpea breeding. Pp. 22 - 40 In: Challenges and opportunities for enhancing sustainable cowpea production. Proceedings of the World Cowpea Conference III held at IITA Ibadan, Nigeria. 4 - 8 September, 2002.

Tarawali, S. A., Singh, B. B., Peters, M. and Blade, S.F. (1997). Cowpea haulms as fodder. pp 313–325 In: Singh, B. B., Mohan Raj D. R, Dashiell, K. E, Jackai LEN (eds.) Advances in Cowpea Research. Co publication of International Institute of Tropical Agriculture (IITA) and Japan International Research Centre for Agricultural Sciences (JIRCAS). Sayce, Devon, UK.

Tijjani, I. and Atungwu, J. J. (2017). Variability of host damage and response of some cowpea breeding lines to root-knot nematodes, Meloidogyne spp. Bayero Journal of Pure and Applied Science; 10(1): 215-222
How to Cite
TijjniI., & AbdullahiN. (2020). EVALUATION OF MAHOGANY (Khaya senegalensis L.) STEM BARK POWDER FOR THE MANAGEMENT OF ROOT-KNOT NEMATODE (Meloidogyne spp.) ON COWPEA (Vigna unguiculata (L.) Walp). FUDMA JOURNAL OF SCIENCES, 4(1), 76 - 84. Retrieved from https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/20

Most read articles by the same author(s)