Adegbite Greener Journal of Agricultural Sciences Vol. 7 (10), pp. 271-274, December 2017. ISSN: 2276-7770 Research Article Manuscript Number: 120517175 (DOI: http://doi.org/10.15580/GJAS.2017.10.120517175) Soil Texture effect on Growth of Cowpea Plants under Root-knot Nematode, Meloidogyne incognita Infested Conditions Ayodele A. Adegbite Institute of Agricultural Research and Training, Obafemi Awolowo University, P.M.B. 5029, Moor Plantation, Ibadan, Nigeria. Abstract Root-knot nematode (M. incognita) constitutes one of the important nematode pests on cowpea (Vigna unguiculata). The edaphic factors of soil such as soil texture play vital role in determining the severity of diseases caused by plant-parasitic nematodes. Screen house studies were conducted in 2013 and 2014 using 15cm size plastic pots (one kg capacity) having soils of five different textures (clay, clay loam, sandy loam, loamy sand and sand) on root-knot nematode (M. incognita) at one J2/g soil in cowpea (c.v. Ife brown) was undertaken. Under each soil type, nematode inoculated and non-inoculated checks were kept. The observations recorded 60 days after nematode inoculation revealed that maximum and significantly higher shoot length, fresh and dry root and shoot weight, number of leaves and buds/plant were in sandy loam soil while these growth parameters were minimum and significantly lower in clay loam soil irrespective of nematization. The reproduction factor of M. incognita based upon galling, fecundity and final soil populations was maximum (30.6) in sandy soil followed by loamy soil (25.8) while it was minimum (3.5) in clay soil making it least favourable for the nematode. With this result it shows that Sandy soil is highly favourable to M. incognita reproduction which is followed by loamy soil and the least favourable was clay soil to the nematode reproduction. Keywords: Soil texture; cowpea; root-knot nematode; Meloidogyne species; edaphic factors; reproduction factor. Return to Content View [Full Article – PDF] [Full Article – HTML] [Full Article – EPUB] Post-review Rundown View/get involved, click [Post-Review Page] References Adegbite AA, Amusa NA, Agbaje GO, Taiwo LB (2005). Screening of cowpea varieties for resistance to Meloidogyne incognita under field conditions. Nematropica 35: 155 – 159. Adegbite AA, (2011). Assessment of yield loss of cowpea (Vigna unguiculata L.) due to Root-knot nematode, Meloidogyne incognita under field conditions. American Journal of Experimental Agriculture 1(3): 79 – 85. Huan J, Rang WZ, Shentu GR (1986). Biological study of cotton root-knot nematode. ACTA-Agricultural Universitatis Zhejiangensis 12(4): 385 -391. Idowu AA, (1991). The distribution of Root-knot Nematodes (Meloidogyne species) in Relation to elevation and Soil type in Vegetable Growing Areas of Upper Northern Nigeria. Nigerian Journal of Plant Protection 15: 15-19. John RK, Paruthi IJ, Bhatti DS, (1988). Effect of M. incognita on Cotton in different soil types. Journal of Cotton Research and Development Plant 2, 90 – 93. Mavlyanov OM, Abdullaeva OL, (1988). Biocoenetic Complexes of Cotton nematodes. Uzbekistan Biologipa Zurnalis, 42 – 45. O’Banon JH, Reynolds HW, (1961). Root-knot nematode damage to cotton yields in relation to certain soil properties. Soil Science 92: 384 – 386. Olowe T, (2004). Occurrence and distribution of root-knot nematodes, Meloidogyne spp., in Cowpea growing areas of Nigeria. Nematology 6: 811-817. SAS Institute, (1998). SAS for linear models: A guide to the ANOVA and GLM procedures. SAS Institute, Cary, N.C. Sikora RA, Greco N, Silva JFV, (2005). Nematode Parasites of Food Legumes In: Plant Parasitic Nematodes in Subtropical and Tropical Agriculture (Ed M. Luc, R.A.Sikora and J. Bridge) 2nd edition, Wallingford, UK, CABI Publishing, pp 259-318.