Soils are formed as a result of Weathering of parent material producing the inorganic element of the soil The incorporation of organic matter The movement of water in a soil profile

The movement of water in a soil profile Process of Leaching Acidity of rainwater Cation Exchange

Leaching RAIN WATER Magnesium Potassium Calcium

Ph scale Battery Acid (0-2) Lemon Juice (1-3) Wine (4-5) Normal Rain (5-6) Distilled water (7) Baking Soda (8-9) Soap (9-10) Ammonia (12-13)

WEAK SOLUTION OF CARBONIC ACID Acidity of Rain CO2 CO2 CO2 WEAK SOLUTION OF CARBONIC ACID H+

Cation Exchange WEAK SOLUTION OF CARBONIC ACID H+ H+ H+ H+ H+ H+ H+ H+ Mg+ H+ H+ H+ K+ H+ Ca+ Mg+ Ca+ H+ H+ K+ H+ Mg+ K+ Mg+ Ca+ BASES ARE LEACHED AWAY FROM THE SOIL Ca+ Mg+ K+ K+

Uses of Acidic Soils Sheep grazing Forestry Tourism Recreation