Md. Nurul Alom and M. Zaman
Abstract
The interrelationships between the bottom soil nutrients (i.e. pH, potassium, calcium, magnesium, iron, manganese, organic matter, nitrogen, phosphorus, sulphur, boron etc.) and the physico-chemical conditions of water (i.e. depth, temperature, transparency, total solid, electrolytic conductivity, pH, carbon-di oxide, bi-carbonate, dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, calcium, magnesium content, total hardness, nitrate nitrogen, total phosphate, oxidation reduction potential, oxidation reduction index and soluble salt) in a large fresh water reservoir in the northern part of Bangladesh has been studied. The bottom soil nutrients and the physico- chemical variables of the water body were found to have positive or negative correlation with each other as revealed by correlation analysis. Contents of the physico-chemical variables of the water did not exceed the ISI and USA limit of drinking water quality standard (DWOS) and irrigation water quality standard (IWQS).