The ASIS system provides data based on the soil surveys conducted by the National Academy of Agricultural Science and the National Institute of Crop Science and the soil test information covering each lot obtained through the sampling and testing of soils by the Agricultural Technology and Extension Centers of provincial cities and Guns (district).

Highly detailed soil map (1:5,000)
The highly detailed soil map (1:5,000) is used by farmers to check the characteristics of soil for each lot for use in planning farming lands. For classification units, soil series is the minimum classification unit used by detailed soil surveys; for mapping units, soil type and soil phase are used. The base map of the highly detailed soil map was produced based on the digital terrain model map (1:5,000) published by the National Geographic Information Institute.

Digital topographical map (1:5,000)
The digital topographical model map (1:5,000) published by the National Geographic Information Institute is used as the basis.

Edited cadastral map
The continuous cadastral maps produced by combining the individual cadastral maps managed by the local governments were reedited after correcting them to suit the land form of the topographic map. The detailed soil map and the edited cadastral maps are jointly used to check the characteristics of soils by lot.

Farmland ledger
The farmland ledgers managed by local governments are used to check farmer information and area of lots.

Soil test Data
These are the general information on parcels (using detailed soil maps, edited cadastral maps, and farmland ledger) and chemical materials obtained by analyzing soil samples. Analyzed properties include pH, OM, effective phosphoric acid, Ca, Mg, K, EC, effective silicic acid, and demand for lime.