About 75 per cent of the cultivable land in the country has been adversely affected by excessive use of chemical fertilisers and pesticides.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/75-cultivable-land-toxin-hit-experts
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-agriculture
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chemical-fertilisers
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-security
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides-and-toxins