The practice, common in Punjab and Haryana, is a major threat to environment
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/stubble-burning-menace-emerges-kuttanad
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/alappuzha-d
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers