In total almost one kilogram of hazardous pesticides is applied per hectare under cotton, and cotton is responsible for 16% of global insecticide usage
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/deadly-chemicals-cotton
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/environmental-justice-foundation
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cotton
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides-and-toxins
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uzbekistan
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/developing-countries