Organic crops contain more healthy compounds than their conventional counterparts, because they are not exposed to pesticides. Work by US-based University of California indicates that organic berries and corn contain up to 58 per cent more polyphenolics
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/another-problem
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agricultural-research
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/organic-farming
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides