Reaction of tomato cv. Roma vf (Solanum lycopersicum) to Meloidogyne javanica Treub infestation in an ultisol treated with aqueous leaf extracts of bitter leaf (Vernonia amygdalina L.) and mango (Mangifera indica L.)
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Department of Crop Production Technology, Federal College of Agriculture Ishiagu, Ebonyi State, Nigeria
Department of Crop Science, University of Nigeria Nsukka, Enugu State, Nigeria
Solomon Ifeayoluchi Ogwulumba
Department of Crop Production Technology, Federal College of Agriculture Ishiagu, Ebonyi State, Nigeria
Journal of Plant Protection Research 2011;51(1):14–17
The reaction of tomato cv. Roma vf ( Solanum lycopersicum ) to Meloidogyne javanica Treub infestation in an ultisol treated with aqueous leaf extracts of bitter leaf ( Vernonia amygdalina L.) and mango ( Mangifera indica L.) was investigated in the Federal College of Agriculture Ishiagu, Ebonyi State, SE Nigeria. Two pot experiments were performed in 2008 and 2009. The various leaf extracts were used at three concentrations of 150 g/l, 300 g/l, and 450 g/l. The soil of the site was characterised as ultisol. Soil without the extracts served as the control. The experiment was set up in a Completely randomized design with four replications. Data obtained were averaged for the two experiments and subjected to the statistical analysis of variance using Genstat Edition 3 Release 7.2. Obtained data concerned plant height (cm), number of leaves at 50% anthesis, number of fruit and fruit weight (g) at harvest, number of galled roots and gall index at harvest. Results showed that the two leaf extracts had highly significant (p < 0.01) effects on all the data. The extracts showed a high nemato-toxic effect on the nematode by reducing the number of galled roots and gall index as well as increasing the fruit weight at the application of water extracts of bitter leaf and mango leaf at the concentration of 450 g/l. This dose gave the highest fruit weight and could be recommended to farmers
The authors have declared that no conflict of interests exist.
Hussey R.S., Barker K.R. 1973. A comparison of methods of collecting inoculum of Meloidogyne spp, including new technique. Plant Dis. Rep. 57 (7): 1025–1028.
Ihejirika G.O., Nwufo M.I., Duruigbo C.I., Onwerenadu E.U., Obilo O.P., Onuoha E.R., Ogbede K.O. 2006. Effects of plant extracts and plant density on the severity of leaf spot disease of groundnut in Imo State. J. Plant Sci. 1 (4): 374–377.
Jaraba J., Lozano Z., Espinosa M. 2007. Root knot nematodes associated with papaya crop. Agron. Colomb. 25 (1): 124–130.
Mbagwu J.S.C. 1992. Improving productivity of a degraded ultisol in Nigeria using organic and maize yield. Bioresour. Tech.42 (2): 149–154.
Mbah O.I., Ohazuruike N.C., Okorocha E.A. 2005. An assessment of the nematicidal potential of some plant products in the control of root knot nematode (M. incognitaKofoid and White) on tomato plant. p. 37–41. In: Proc. 32nd Ann. Conference of Nigeria Society for Plant protection.University of Portharcourt. 15–20th May 2005, 116 pp.
Nottidge D.O., Balogun R.B., Njoku N.R. 2009. Effect of rice husk ash on exchange acidity, growth and yield of groundnut in an acid ultisol. Global J. Agric. Sci. 8 (1): 1–6.
Obi I.U. 2002. Statistical Methods of Detecting Differences Between Treatment Means and Research Methodology Issues in Laboratory and Field Experiments. Ap. Express Publications Limited Nsukka, Nigeria, 117 pp.
Ogwulumba S.I., Ugwuoke K.I., Iloba C. 2008. Prophylactic effect of paw-paw leaf and bitter leaf extracts on the incidence of foliar myco-pathogens of groundnut (Arachis hypogeae L.) in Ishiagu, Nigeria. Afr. J. Biotechnol. 7 (16): 2878–2880.
Ojeniyi S.O., Awodun M.A., Odedina S.A. 2007. Effect of animal manure spent grain and cocoa husk on nutrient status, growth and yield of tomato. Middle-East J. Sci. Res. 2 (1): 33–36.
Onyenobi F.I., Aghale D.C. 2003. Evaluation of tropical ethnomedicinal plants for biopesticidal potentials for the protection of yam biodeteriotion. J. Discovery Innovation 4 (1): 32–35.
Sasser J.N. 1989. Plant Parasitic Nematodes: The Farmer’s Hidden Enemy. Co-orperative Publication of the Department of Plant Pathology North Carolina State University and the Consortium for International Crop Protection, 2 pp.
Taylor A.L., Sasser J.N. 1978. Biology; Identification and Control of Root-Knot Nematodes (Meloidogyne spp.). Crop Publ. Dept. Plant Pathol. North Carolina State Univ. and US Agency Int. Dev. Raleign, N.C., 111 pp.
Udo I.A. 2004. Infectivity of Meloidogyne incognita on Elite and Local Cultivars of Tomato in the Humid Tropics. M.Sc. Dissertation, University of Nigeria Nsukka, 102 pp.
Uguru M.I. 1996. Crop Production; Tools, Techniques, and Practice. Fulladu Publishing Company Nsukka, Nigeria, 153 pp.