The survey noted that some 35 million tonnes of rice paddy in three adjoining states (Punjab, Haryana and Western UP) are burnt in late October.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/impose-heavy-penalty-burning-agricultural-waste-says-economic-survey
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/haryana
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/crops
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/public-transport
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control