Populations of Derived-parasitic Nematodes on Sweet Potato (Ipomoea batatas) Cultivated Fields in Offa, Offa Local Government Area, Kwara State, Nigeria


  • Abiodun Rasheed Omokanye Federal University, Otuoke, Yenagoa, Bayelsa State, Nigeria
  • Benefit Onu Federal University Otuoke, Bayelsa State, Nigeria


Ipomoea batatas, Offa Local Government, Fields, Sweet Potato, Incidence, parasitic nematodes


Communication in Physical Sciences, 2024, 11(2): 178-187

Authors: Abiodun Rasheed Omokanye and Benefit Onu

Received: 05 September 2023/Accepted: 28 March 2024

This study was aimed at ascertaining the soil medium and stems of the test plant to determine the populations of derived-parasitic nematodes associated with sweet potato in Offa, Kwara South, Kwara State. Three sweet potato fields monoculture designated sites-F1, F2 and F3 were randomly selected for the study. Soil was collected between 6-7:30 am each day once every seven days for four months. Twenty-five soil and Twenty-five stems samples were collected from each sweet potato field making a total of one hundred and fifty samples. The soil was collected using hand trowel while Cutlass was used in collecting stems. The sieve plates technique was employed for nematode extraction, and nematodes were identified by the use of a pictorial key. A total of 650 nematodes representing 11 genera were recovered from soil and stem samples. Root Knot/Meloidogyne species 73 (16.3%) had the highest prevalence followed by Cyst nematode/Heterodera species 65 (14.5%) while Stem Lesion/Aphelenchoides basseyi species 2 (0.4%) showed the least prevalence in soil. However, Stem Lesion/Pratylenchus species was reported more often than any other species in stems with a total affluence of 51 (25.2%) followed by Burrowing nematodes/ Radopholus similis species with 44 (21.8%) while Ditylenchus dipsaci species occurred less than all other species with 10 (5.0%); an observation which is ascribed to a nematodes survival strategy. The result shows that soil nematodes are an important pest of sweet potato in the Offa Local Government Area. Others may include, Bursaphelenchus xylophilus, Rotylenchulus reniforms, Xiphinema index, Necobbus aberrans, Aphelenchoides basseyi and Globodera spp).  Hence, should be considered in pest control programs.


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Author Biographies

Abiodun Rasheed Omokanye, Federal University, Otuoke, Yenagoa, Bayelsa State, Nigeria

Department of Environmental Management and Earth Toxicology

Benefit Onu, Federal University Otuoke, Bayelsa State, Nigeria

Department of Biology


Abdel-Momen, S.M. & Starr, J.L (2014). Damage Functions for three Meloidogyne spp on Arachis hypogaea in Texas. Journal of Netmatology, 6, pp. 200-207.

Alabi, M. (2018). The Performance of new hybrid yam varieties (D. rotundata Poir) under different crop farming systems. African Journal of Root Tuber Crops, 10, pp. 46-53.,

Amy, G. (2018). Effects of Inter cropping on root knot-nematode disease on Soyabean (Glycine max (L) merril). New York Science Journal 1(1), pp.43 – 46.

Amy, G. & Asante, J.S, (2017). Nematode dynamics in soil amended with neem leaves and Poultry manure. Asian Journal of Plant Science, 4(4), pp. 426-428.

Bonnierant, L. (2010). Nematodes community changes and survival rate under natural fallows in Sudan Sahelian area of Senegal. Pedobiogia,

Chang, C. (2017). A Century of Nematologyin: Nematology Advance and Perspective , Tsinghua University Press, Beijing, China. P 90.

Cheryl, C. F. (2012) .Plant-parasitic nematodes on field crops in South Africa. Fundamentals of Applied Nematology, 20: pp. 120-131.

Charles, K. (2012). Plant Parasitic Nematodes Of Cassava Manihot esculenta Cultivated In Ahoada East Local Government Area In Rivers State, Nigeria. Applied Science Report, 7, pp. 15-19.

Gardening, K. (2013) .The Effects Meloidogyne Javanica on the growth the tomato cultivar, VC 82803. African Journal of Applied Zoology and Environmental Biology, 14, pp. 42- 49.

Imafidor, H.O., & Ekine, E.G. (2016). A Survey of the Nematode Pests of the Crop Cassava (Manihot esculenta) in Rivers State, Nigeriaa. African Journal of Applied Zoology and Environmental Biology, 12, pp. 69-74.

Jackie, R. (2012) Soil nematode populations and root biomass on Cynomys ludovicianus colonies and adjacent uncolonized areas. Oecologia, 63: pp. 307-313.

Luc, U. (2012). Introduction to Plant Parasitic Nematodes: The plant Health Instructor, pp.20- 42

Makete, E. (2012). Lecture and symposium, presented at the sensitization. Journal of Applied Zoology and Environmental Sciences, Namibia

Mary, E. (2012). Nematodes Parasites of Peanuts, Future US LLC, full, 7th floor, 130 West 42nd Street, New York

Mary, E. & Brooks, C. (2019). Plant and Soil Nematodes: Societal Impact and Focus for the Future. Journal of Nematology, 26(2): pp. 127-137.

Nzeako, A.B. (2018). Nemesis in household storage, the Africa concern and impact on economy. Unpublished Thesis of PhD, Department of Biology, Nasarawa State University, Keffi

Starr, A. (2010). Development of Fortified Peanut based infant formula of Severely Malnourished Children. America Journal of Food science and technology,17, 65-78.

Siddiq, M.R. (2010). Tylenchida: parasites of plants and insects. International Journal on Environmental Variabilities,73, pp. 24-32.

Waterworth, S.O. (2017). Research Progress in Peanut Protein and its Functional Properties. China Oil and Food. P 43.