Soil is one of the most important natural resources in Indonesia, with a total area of about 1.3 million square kilometers. The quality of the soil, however, is not always good, due to erosion, mining, and other factors.
The most pressing soil problems in Indonesia include:
1. Erosion caused by rain and wind
2. Soil acidification due to acid rain
3. Soil salinization due to irrigation and poor drainage
4. Soil infertility and low fertility
5. Soil pollution from mining …