Deviation from Optimum Fallow Periods for Dry Rice Fields in Sarawak:

A predictable decline in rice yields is realized when dry rice fields are farmed after shorter than optimum fa11ow periods in specified contexts, Where fields are only sporadically and not consistently farmed in fa11ow periods that are lcss than optirnum, no predictable decline in yields will occur.i)Rice farming in the hills and rnountains of Seutheast Asia tends to be a subsistence eflbrt, although many of these folk rnay be thought of as marginal peasants.2)There are even some true peasants among the hill farmers.Swid- den, or slash and burn, is the most widely used cultivation method in these upland areas.Despite the importance of swidden, or dry rice farming for the region, therc is little concrete information about the relationships arnong the various com