Entisols known as marginal soil. The primary factor in which can became a limiting factor was soil solum. The solum was very shallow, and lithic contact could found in 30 cm depht from surface soil. The characteristic of Entisol was known as soil with 2 profile layer, A layer in which dominate with sandy texture, and B layer in which dominate with parent material. The B layer was become limiting factor for root plant expansion, and it become primary problem for agriculture establishment in area were Entisols dominate in large area. In recent day the use of organic mater was already done in order to reduce the soil limiting factor for better use. For more information about the research project about Entisols with soil optimization model Click here
n