SOIL TYPES IN INDONESIA 1. SOIL DEFINITION Soil is a natural heterogeneous objects, consists of solid, liquid and gas. It has dynamic nature and behavior. Soil is considerably funtioned as tools in agriculture productivity, since it has been funtioned as planting media. Agriculture productivity is dependant to the pphysical, chemical and biological nature of the soil. As the planting medium, soil has functions as follows. a. Growing media for plants b. Providing variety nutrient plants c. Providing air for roots breathing d. Providing water for plants 2. Soil Components Soil Consists of mineral substance, organic substance and ground water. Mineral substance derives from rock weathering, while organic substance derives from decomposition of non living organism. With regards to that situation, there are destructive and constructive processes within soils. The destructive process is decomposition of mineral substance and organic substance. The constructive process is reconstruction process of mineral substance and organic subs tance into new compound.