Soil Ph Measurment Essay Example

ompete for vacant sites exchanging them with basic ions. Foth (1990) states that adsorption of hydrogen ion causes instability in aluminium resulting in it exiting from clay lattice whereas released aluminium undergoes hydrolysis producing hydroxy-aluminium along with hydrogen ion production significantly contributing towards soil acidity.The hydrolysis of hydroxy-aluminium produces additional hydrogen ions leading to the formation of Al-hydroxide contributing substantially towards acidity which is considered an important phenomenon.Table 1 summarizes the pH values of various soil types. The chemical equation for this reaction is AL(OH) + H*2*O a Al(OH)*2* + H+; Al(OH)*2* + H*2*O a AL(OH)*3* + H+. Sand has the highest pH followed by organic matter and compost. Among all analyzed soils, sedentary soil has the lowest pH while the 3:2 soil has a lower pH than compost. Increasing dilution of th