What's happening at IRRI
Tuesday, February 10, 2015, 01:15pm - 02:15pm
Triple rice: is it feasible for the south-central
coastal zone of Bangladesh?
Nibir Kumar Saha
PhD, Research Scholar
Abstract: The southern region of Bangladesh experiences multiple challenges including excessive flooding, soil salinity, severe cyclonic storms and tidal surges. However, the south-central (SC) region is blessed by large rivers, in which the water remains non-saline year-round, a dense network of small river canals across the landscape, and polders to protect the lands from tidal flooding during the rainy season. Despite these resources, cropping system intensity is very low, with a low yielding, rainy season rice crop (aman) over most of the landscape, which is only sometimes preceded by an early rainy season rice crop (aus), and followed by a low yielding legume. Large areas of land lie fallow for several months each year. We hypothesized that with improved water management (especially drainage) and the use of modern high yielding rice varieties, that intensification to a triple rice cropping system may be feasible. This hypothesis was tested in an experiment conducted for two years (2012-14) in the south central coastal zone. The research showed that triple rice systems are feasible in the south central coastal zone of Bangladesh, with maximum annual system yields of 15-16 t/ha, up to five times that of current farmer practice. The seminar will show the key strategies needed for achieving such large increases in system productivity.
Umali Bldg Rm A