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International Journal of Basic Science and Technology

A publication of the Faculty of Science, Federal University Otuoke, Bayelsa State

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Archive | ISSUE: , Volume: Oct-Dec-2025

Assessment of Nematodes Associated with Colocasia esculenta in Otuoke Ogbia LGA, Bayelsa State


Author:Inala, E.R

published date:2025-May-01

FULL TEXT in - | page 246 - 249

Abstract

Colocasia esculenta (L.) Schott is an important staple cultivated in Bayelsa State, playing a crucial role in food security and livelihoods. The study investigated the diversity of nematodes associated with C. esculenta in farmlands in Otuoke, Bayelsa State, Nigeria, to determine their impacts and potential on the growth and yield of this essential agricultural crop. The Baermann funnel technique was utilized for nematode extraction, followed by microscopic identification based on morphology. The results revealed the presence of plant-parasitic nematodes including Meloidogyne species., Belonolaimus longicaudatus and Helicotylenchus species. Meloidogyne species and Belonolaimus longicaudatus were more widespread and observed in soil and corm samples. Helicotylenchus sp was seen associated with soil samples only. These nematode genera negatively affect the growth of Colocasia esculenta and could be contributory factors to the declining taro production in Otuoke, and Bayelsa State at large. Infestation is attributed to the practice of monoculture, the use of uncertified taro plantlets and contaminated tools by farmers. The study provides baseline data on the nematodes associated with C. esculenta in Bayelsa State.

Keywords: Colocasia esculenta, Nematodes, Taro, Bayelsa State, Food security

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