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Drought Management by Integrated Approaches in T. Aman Rice Season to Escalate Rice Productivity in Drought Prone Regions of Bangladesh
Erratic rainfall often causes water shortage for wet season rice (T. Aman) cultivation, which has a negative impact on crop growth and yield. The long-term rainfall analysis of drought prone North-West region of Bangladesh indicated that moderate to severe drought occurred in this region if monsoon ceased between the last week of September and the first week of October. Integrated management approaches could help reduce the impact of drought on T. Aman rice production. The approaches include (i) applying supplemental irrigation when needed after rainfall stops; (ii) introducing drought-escaping, short duration rice variety; and (iii) adjustment of transplanting time to escape drought spells. Applying supplemental irrigation two to three times during the critical stages of rice (from flowering to grain filling), reduced 20–40% yield loss over fully rainfed conditions. Timely transplantation of drought-escaping, short duration variety allows the crop to mature before a drought is exposed. Farmer has comparative flexibility when choosing the transplanting date for the long duration variety. If T. Aman rice could be transplanted between 10 and 24 July, drought implications on critical stages could be avoided. Integrated drought management approaches have been found to increase the productivity of T. Aman rice in the drought suffered regions.
Drought Management by Integrated Approaches in T. Aman Rice Season to Escalate Rice Productivity in Drought Prone Regions of Bangladesh
Erratic rainfall often causes water shortage for wet season rice (T. Aman) cultivation, which has a negative impact on crop growth and yield. The long-term rainfall analysis of drought prone North-West region of Bangladesh indicated that moderate to severe drought occurred in this region if monsoon ceased between the last week of September and the first week of October. Integrated management approaches could help reduce the impact of drought on T. Aman rice production. The approaches include (i) applying supplemental irrigation when needed after rainfall stops; (ii) introducing drought-escaping, short duration rice variety; and (iii) adjustment of transplanting time to escape drought spells. Applying supplemental irrigation two to three times during the critical stages of rice (from flowering to grain filling), reduced 20–40% yield loss over fully rainfed conditions. Timely transplantation of drought-escaping, short duration variety allows the crop to mature before a drought is exposed. Farmer has comparative flexibility when choosing the transplanting date for the long duration variety. If T. Aman rice could be transplanted between 10 and 24 July, drought implications on critical stages could be avoided. Integrated drought management approaches have been found to increase the productivity of T. Aman rice in the drought suffered regions.
Drought Management by Integrated Approaches in T. Aman Rice Season to Escalate Rice Productivity in Drought Prone Regions of Bangladesh
Tarekul Islam, G. M. (editor) / Shampa, Shampa (editor) / Chowdhury, Ahmed Ishtiaque Amin (editor) / Roy, Debjit (author) / Hossain, Md. Belal (author) / Pranto, Mohammad Rezoan Bin Hafiz (author) / Islam, Md. Towfiqul (author)
Water Management: A View from Multidisciplinary Perspectives ; Chapter: 17 ; 351-364
2022-03-26
14 pages
Article/Chapter (Book)
Electronic Resource
English
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