An adverse land:person ratio creates a strong thirst for cultivable land since less than one-half of the total land is fit for cultivation, with the remaining taken over by the hills and rocky fields. Hardly 5% of the cropped lands are irrigated by an age old network of rain-fed tanks (small lakes), each irrigating 2 to 10 hectares of wet land.
Due to limited arable land, a high demand for cultivable land exists. The majority of land is unsuitable for cultivation, with only a small portion being used for farming. Rain-fed irrigation systems are employed, utilizing ancient tanks (small lakes) to irrigate 2 to 10 hectares of wet land.