In the early 1960s, economist CD. Deshmukh came to me with some seeds of acacia and eucalyptus. He was worried because the seeds had failed to germinate. I x-rayed the seeds and found their embryos normal. So I treated the seeds with acid and thinned their thick coat. After this, Deshmukh was able to germinate the seeds, and acacia and eucalyptus trees grew all over Delhi.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/review-sez-policy-or-risk-food-crisis
[2] http://admin.indiaenvironmentportal.org.in/category/author/ms-swaminathan
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/week-kochi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-use
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-harvesting
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/special-economic-zones-sez
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india