Hi,
In many ways you can do like,
1) Monitering your farms using laser beam, or CCTV kind of things for Animals
2) Switch On/Off using internet (But this can be done using Mobile itself)
3) Automate the water flow of you field like if your field get enough water supply then motor should automatically switched on and viceversa.
4) Easy mobile app for the farmers to moniter theire farms thru smartphones.
5) Cost calculator like, What would be the total cost spent for 1 acer of sugarcane (based on the climatic conditions, watter supply, and seeds) and what would be the total outcome you get. Similarly for different crops
These are the some of the ideas i can think,
Thanks,
Dhana.