1987 Volume 60 Issue 2 Pages 117-133
In this article cropping systems of wet-rice cultivation in a backswamp are described from both physical and socio-economic viewpoints in order to discuss the probability of the adoption of modern rice varieties (MVs) in lowland Bangladesh. The discussion is based on a case study in a backswamp located in the southeastern part of the country.
It is concluded that recent dry season MV cultivation is competitive with traditional cropping systems in a large part of the lowland. There are no physical constraints on the MV growing where land is dried up by the end of February and, at the same time, water is available during the dry season. In economic terms, the MVs will be able to replace local mixed-sown tall varieties only when the material cost of irrigation is reduced to a reasonable level.
In contrast, in the lower part of the area, dry season MV cultivation is risky or even impossible because of the long duration of submergence. The rice production capability of such lower land is not necessarily inferior in economic terms insofar as it is under pure floating rice cultivation, therefore traditional cropping systems will remain for a while. This type of floating rice cultivation is commonly observed in the backswamps on the lower Ganges delta by LANDSAT images.