3. Results and Discussion
Table 1 shows the physico-chemical composition of some specific surface water in the study area. The
mean values of the pH ranges from 4.8 to 7.9. Majority of the values were above 7.5 indicating their alkaline
nature. Irrigation water outside the range of 4.5-8.5 may cause nutritional imbalance or may contain toxic
ions. The high value in location 1 may be as a result of the presence of clay soil in the area, which is
generally basic / alkaline in nature. The low value of location 5 is most likely due to contamination of ferric
and ferrous ions