ABSTRACT
Life in the soil is greatly influenced by the soil pH, either directly or indirectly.The pH scale is a means of expressing the degree of acidity or alkalinity. pH values less than 7 are acid and the lower the figure, the greater the acidity.Values greater than 7 indicate increasing alkalinity and pH 7 is neutral.Temperate area soils usually lie between pH 4 and 8; the vast majority are between 5.5 and 7.5.
