The food subsidy burden increased 82% primarily because of the increase in minimum support price.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/management-food-stocks-pds-needs-attention
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-policy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-supply
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-storage
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/subsidies
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india