Just like any other business-people, farmers
face the global economy, armed with technological advances and innovative strategies to target customers. If farmers don't invest in new tools and learning skills like genetics and marketing, they risk falling behind their competition. Robots are already a pretty significant part of modern farming nowadays, and here are just a few interesting links on robots doing our agricultural bidding.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post