If you want to go for real organic farming then first listen watch video of respected, Guru of zero budget natural farming, Padmabhushan Shree Shubhash Palekar. If you like it then attend his workshop. In single workshop they will teach you what agriculture university doesn't teach in 4 year...
I am planning to plant drumstick in 12 acres of land. I have not done any servey yet about market. Can somebody help me on where can I get market details.