One of the most difficult problems found in many parts of Australia is the presence of excess salt in the soil. Soil salinity is an indication of the level of soluble chemical compounds present. Salts are released naturally when rocks break down, the most predominant being sodium chloride or common salt. Other salts include compounds of magnesium, potassium and calcium. The Creeping Menace When salt levels become elevated soils are damaged and crop production is diminished. Salt problems occur naturally in the landscape, but many areas become saline due to excess clearing of vegetation, over cultivation and poor irrigation practices. The end result is that plants find it more difficult to absorb water from the soil; plants wilt more readily, produce less growth and in severe cases tissues are damaged. Eventually sensitive plants will die and salt affected areas show a greatly reduced variety of plant growth. Salt Crystals...