Lime 1.8 – 2 Agricultural lime, also called garden lime or liming(soil), is a soil additive made from pulverized limestone orchalk. The primary active component is calciumcarbonate. Additional chemicals vary depending on the mineralsource and may include calcium oxide, magnesium oxideand magnesium carbonate.
The concept of corrected lime potential to definethe degree of base saturation in soils became the basisfor procedures now used in soil testing laboratories todetermine the lime requirement of soils. Effects on soil: Lime may occur naturally in somesoils but may require addition of sulfuric acid for itsagricultural benefits to be realized. Gypsum is alsoused to supply calcium for plant nutrition.
Other forms of lime have common applications in agriculture and gardening, including dolomitic lime and hydrated lime.Dolomitic lime may be used as a soil input to provide similar effects as agricultural lime, while supplying magnesium in addition to calcium. Some plants grow best in basic conditions. Lime isadded (calcium oxide) which reacts with water to form slated lime (calcium hydroxide). This neutralizes the acidity in the land and makes it suitable for beetroot etc.
The pH of the soil is very important for a proper crop yield. Salts such as carbonates, bicarbonates,phosphates, and organic acids render the soils acidic or basic.Farmers and gardeners need to know how acidic or basic the soil is so that they know which plants togrow. The choice of fertilizers also depends upon pH of the soil.Most vegetables like carrot and cabbage like a neutral soil (pH 7.0).