Agricultural lime is any product that is used to increase the pH of soil. In Western Australia, the three main sources are limesand, limestone and dolomitic lime. Application of one of these products is usually the most economical method of ameliorating soil acidity. 

When selecting an agricultural lime to treat soil acidity the total cost needs to be considered. This includes the purchase cost at pit, transport cost to paddock and spreading cost. All factors are converted to 100% NV for equal comparison and discounted to allow for differences in particle size and speed of reaction.