The people already doing this work today already do exactly that.

There's no goalpost shifting here - it's l'art pour l'art at its finest. It'd be introducing an agent where no additional agent agent is required in the first place, i.e. telling a farmer how to do their job, when they already now how to and do it in the first place.

No one needs an LLM if you can just lease some land and then tell some person to tend to it, (i.e. doing the actual work). It's baffling to me how out of touch with reality some people are.

Want to grow corn? Take some corn, put it in the ground in your backyard and harvest when it's ready. Been there, done that, not a challenge at all. Want to do it at scale? Lease some land, buy some corn, contract a farmer to till the land, sow the corn, and eventually harvest it. Done. No LLM required. No further knowledge required. Want to know when the best time for each step is? Just look at when other farmers in the area are doing it. Done.