GIS-Based Assessment of Irrigation Water Quality Index in Selected Farm Areas, South-Western, Nigeria

  • Joseph A. Adeyeye Water Resources Management and Agrometeorology,Federal University Oye ekiti, Ekiti State
  • Toyin Omotoso
  • Ajayi J. Oloruntade
  • Joseph Otugboyega
Keywords: Crop production, Irrigation, IWQI, Soil condition, Water management, Water quality


Water is the most essential nutrient for plant survival and its quality is vital to soil health and crop yields. This study evaluated, categorized and mapped water quality application condition in selected farm settlements, Ekiti North Senatorial District, Nigeria, using Irrigation Water Quality Index (IWQI). Twelve water samples from surface and groundwater sources across the farm settlements were collected and analyzed with replicates in the laboratory, following standard procedures. IWQI revealed that 61% of the water samples fall within ‘‘severe restriction" category covering the northeast and northwest parts while 39 % falls into the ‘‘high restriction" category for cropping covering the southern part respectively. The outcomes of the study allows for guided water use in relation to soil factor and provide good quality water database  in the face of inadequate rainfall occasioned by climate change for optimum water utilization and crop production.