Hydrochemical characteristics and suitability of Kanzenze River for irrigation of akagera upper catchment in Rwanda

Journal of Agro-environmental Science Pub Date : 2023-09-06 DOI:10.4314/as.v21i4.1

J. Nsengiyumva, K.N. Taremwa, H. Vasanthakaalam, P. Musabyimana, V. Ruganzu, N. Etim

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Abstract

The purpose of the study was to assess the hydrochemical characteristics of the Kanzenze River and its suitability for irrigation use in the Akagera upper catchment in Rwanda. In this respect, 12 samples of surface collected water in four sites namely Karumuna, Muzi, Karugenge, and Nyamabuye were at a distance of 100.00 meters one to another. The Food and Agriculture Organization (FAO) standards were referred to analyze water quality parameters such as potential hydrogen (pH), electrical conductivity (EC), total dissolved solids (TDS), sodium adsorption ratio, soluble sodium percent, total hardness, magnesium adsorption ratio and Kelly index were used for the evaluation of water quality and its suitability for irrigation. Data were analyzed using descriptive analysis and principal components analysis. All parameters analyzed were within the FAO standards stipulated for irrigation. The mean pH of the water sample was 7.30; the mean TDS was 205.10 mg l‒1; mean sodium adsorption was 2.30 while the mean EC was 302.26 µS/cm which indicated that Kanzenze River is in category I of classification standard suitable for irrigation. This indicated that the Kanzenze River was suitable for irrigation.

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卢旺达阿卡盖拉上游流域坎赞泽河的水化学特征及适宜性

这项研究的目的是评估坎赞泽河的水化学特征及其在卢旺达阿卡盖拉上游集水区灌溉利用的适宜性。在这方面，在Karumuna、Muzi、Karugenge和Nyamabuye四个地点收集的12个地表水样本彼此相距100米。参考联合国粮农组织(FAO)标准，分析水质参数，如电位氢值(pH)、电导率(EC)、总溶解固形物(TDS)、钠吸附比、可溶性钠百分比、总硬度、镁吸附比、Kelly指数等，评价水质及其灌溉适宜性。数据分析采用描述性分析和主成分分析。所分析的所有参数均在粮农组织规定的灌溉标准范围内。水样平均pH为7.30;平均TDS为205.10 mg l-1;平均钠吸附为2.30µS/cm，平均EC为302.26µS/cm，属于适合灌溉的第一类分类标准。这表明坎则泽河适合灌溉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Agro-environmental Science

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