The genesis and characteristics of paddy soils in Indonesia

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Abstract
Recently a special group of soils, the paddy soils, has been recognized for soils on which irrigated rice is cultivated (1,2). They are soils which have developed special morphological and chemical characteristics, such as surface gley and plowpan formation, as a result of the artificial flooding associated with rice cultivation. Paddy soils occur extensively in the ricegrowing areas of southeast and east Asia, but only in Japan have extensive studies been reported with regard to their formation and classification (6,7,8). In Indonesia, where rice is one of the most important crops, information concerning paddy soils is fragmentary and for the most part concerned only with agronomic problems (3, 9).

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