Sri Lanka is the highest user of agro-chemicals in the world.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/country-awash-agro-chemicals
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/island-sri-lanka
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sri-lanka
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chemical-fertilisers
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/myanmar
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/jamaica
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dominican-rep
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/costa-rica
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticide-use