Drip irrigation may be centuries old NGr but its revival in a novel form deserves mention. The department of horticulture in Orissa has evolved the 'pitcher-method-drip-irrigation' where earthen pitchers filled with water are placed under plants%? which require a constant flow of water. A hole at the bottom of the pitcher allows the water to drip slowly near the root of the plant. This cost-effective method not only irrigates the plants but is also serving the cause of the local 1unthare(potters) who make a lliving out of selling the pots.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/trickle-thrills
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/irrigation
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rural-technology
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientific-and-technical-development
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa