Go do some Farm-stay holidays and ask lots of questions. While there, ask around for other farms that will show you around. Talk to them, look for pain points, then go home and work on solutions. If you come up with something they agree would be helpful, let them be your beta testers (for free). You'll be helping real people in real ways, and might stumble on something that can change the industry.

I have family on farms, and friends who work in larger scale farming, and have spent plenty of time at both. They're always happy to hear about things that could make their lives easier, but most of the big startups are coming at this completely wrong and offering expensive over-complicated "solutions" that don't solve anything the real farmers really care that much about.

Many cities have community gardens where you can rent a small plot. Use that to learn the basics and test your prototype devices.