Pesticide Residues and Their Degradation Products as Influenced by Acidity and Organic Matter in Kura Irrigation Farmland Soils

Journal of Applied Life Sciences International

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Title Pesticide Residues and Their Degradation Products as Influenced by Acidity and Organic Matter in Kura Irrigation Farmland Soils
Creator Olukanni, C. O.
Audu, A. A.
Waziri, M.
Description The aim of this research is to determine the insecticide and herbicide residues and their degradation products in Kura irrigation farmland soils. The analyses were carried out during the planting (before harvest) and after the harvesting periods. The insecticide residue analyses were undertaken using Gas chromatography-mass spectrometry (GC/MS) after extraction with a mixture of n-hexane and acetone (1:1) in a soxhlet extractor. The pH levels of the soil samples and the soil organic matter were also determined using standard analytical methods. The acidity and organic matter content of most of the soil samples increased slightly after harvest. The compounds detected as residues include 1-octadecene, 9-heptadecanone, (E)-3-eicosene, (Z)-5-nonadecene, heptadecane, 1-docosene, 1-nonadecene and 1-eicosene. Out of these residues, 1-octadecene and (E)-3-eicosene were detected during planting and after the harvesting periods, showing that they are the most persistent of the residues in the soil samples. The residues detected before harvest were totally different from the residues detected after harvest. This shows that the pesticides, after some time, degraded in the soil into completely different compounds and the total residues were detected in high percentages.
Publisher SCIENCEDOMAIN international
Date 2020-09-10
Type info:eu-repo/semantics/article
Format application/pdf
Source Journal of Applied Life Sciences International; 2020 - Volume 23 [Issue 8]; 63-74
Language eng
Rights Copyright (c) 2020 © 2020 Olukanni et al.; This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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