Nematicidal effect of organic extract metal complex on Meloidogyne incognita infecting groundnuts (Arachis hypogea).
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Date
2019
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Scientia Agriculturae Bohemica, Czech University of Life Sciences, Prague.
Abstract
The control of plant parasitic nematodes is constantly associated with environmental pollution problems which emanates from
the ability of synthetic nematicides to bind strongly to different soil types owing to their hydrophilic nature. This research attempted to determine the nematicidal potential of copper, iron and zinc salts complexed with methanolic extract of Enantia
chloranta on Meloidogyne incognita infecting groundnut plants on the field. Carbofuran, a synthetic nematicide was used as
a reference standard. The experiment was a randomised complete block design which was conducted in two raining seasons
(2017 & 2018). Two grams (2 g) of each of the metal salts were reacted with 300 ml of E. chloranta methanolic extract. Good
nematicidal activity was displayed by E. chloranta crude extract copper complex (ENCT/CuSO4) close to the value obtained
with carbofuran (CBFN), iron and zinc salt complexes (ENCT/FeSO4 and ENCT/ZnSO4) were also significantly (p<0.05) effective. Toxicity of the metal salt complex to M. incognita was dose dependent. Vegetative growth and yield was significantly
(p<0.05) higher in plants treated with the highest concentration of the metal complex solution. Significantly lower nematode
population was seen at harvest in the roots of treated plants as opposed to the untreated plants. This research has demonstrated
that the E. chloranta metal complex is a promising nematicidal substance
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Keywords
metals; nematodes; pesticides; environmental pollution; carbofuran; complexation
Citation
Fabiyi, O.A., Olatunji G.A and I.O. Daodu, I.O. (2019). Nematicidal effect of organic extract metal complex on Meloidogyne incognita infecting groundnuts (Arachis hypogea). Scientia Agriculturae Bohemica, 50 (3): 191-196.