Irrigation

Andy's always had the idea that nothing would be more useful to a crop farmer then being able to control the rain. And here, he can do just that. 
Pro's: you can control exactly how much it "rains" and when.  As well as where you want it to rain and where you'd like it dry.
Con's: Rain that comes via man made inventions, means that there can also be down to earth breakdowns which need fixing and monitoring.

I don't have a picture of the pivot in the field running but it's been fun for the kids when the lawn irrigation is going! It's a great way to cool down quickly.