Measurement Of Ph And Total Dissolved Solids Essay

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For the measurement of pH and total dissolved solids, according to Phocaides (2007), pH increase may increase the level of bicarbonate concentration, which would affect the uptake of minerals by the plants and thus affecting their metabolism. The level of pH above 8.5 is often caused by high bicarbonate and carbonate concentrations, known as alkalinity. And these concentrations of high carbonates cause calcium and magnesium ions to form insoluble minerals leaving sodium as the dominant ion in solution (Bauder, 2011). And for total dissolved solids, according to Arabi et al. (2010), increase in total dissolved solids in irrigation water affects the soil efficiency, growth and yield of the crops. It was found that the total dissolved solids were lower than the WHO standards in the upstream of Thimphu River and met the standard for drinking water but it increased as it passed through the urban areas (Giri and Singh, 2013). Thus, with rampant urbanization and development activities happing, the pH and total dissolved solids needs regular monitoring to check the quality of water for irrigation. 3.3.2 Electrical conductivity The most influential water quality guideline on crop productivity is the water salinity hazard as measured by electrical conductivity (ECw) (Bauder, 2011). Higher electrical conductivity means higher salinity which means that plant require more energy to take nutrients dissolved in water from fertilizer and soil (Tsado et al., 2014). According to Phocaides
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