I know posts on automated plant care are very popular on Gadget Master, so I want to highlight this Arduino appnote - Smart Farm Irrigation System Using Arduino Edge Control.

We've shown you one way to implement a drip irrigation system, but for a little less money and a bit of ingenuity, you can make a working drip system with your existing spigot hose.

The agreement includes about CAD$102,000 in service and consulting services. The project irrigates using fully automated drip irrigation technology servicing a field of 990 hectares of cotton.