Existing solutions on agri mechanizations

BONIROB

Bonirob, the Weed Control Machine Bonirob and his buddies can work in tandem to remove weeds from the land and applying fertilizer. The robot is autonomous, and designed to work in tandem with other models.

eBee

eBee, the Airborne Scout Drone (for Pests) The eBee Ag from SenseFly is a drone that surveys the land from above, taking high-resolution shots to help farmers plan fertilizer spraying and planting. It can also create 3D images and overlays.

Grizzly RUZ

Grizzly RUV, for Bailing Hay and Hunting Cow Urine The Grizzly RUV from Clearpath Robotics is a big robot for big jobs like hay baling. It also has laser sensors precise enough that it can cultivate asparagus stalks ready for picking and detect cow urine so it knows where grass might need to be treated.

The Tractor of the Future This looks like a common farm sight— a tractor and a grain cart. In fact, you're looking at fully autonomous, GPS-guided equipment that carries sensors to avoid obstacles. The Autonomous Harvest System is a collaboration between Kinze Manufacturing in Williamsburg, Iowa, and Jaybridge Robotics.

Rowbot

Rowbot, the Scrappy Little Fertilizer Bot The scrappy underdog Rowbot may not have the heft of the other machines, but it can scoot where they cannot—traveling between rows of crops, applying fertilizer as it goes. The crops may well have been planted by a cousin robot as well.

Hydroponics - Vertical seed sowing

http://www.soilless.org/hydroponics/germinating-seeds-hydroponics-india-becomes-germination-nation/