Cyclone Aila has altered their calculations. Hit by crop failure due to increased salinity caused by sea water surge, the farmers of the Sunderbans were pinning hope on the low-yield but salt-resistant paddy varieties that their forefathers cultivated.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/post-aila-farmers-wake-forgotten-salt-resistant-paddy-varieties
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-capability
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-crops
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rice
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/salt
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cyclones
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers