Not at all. My opinion is that you should be taxed the same way no matter how you use the energy that falls on your soil from the sky. It shouldn't matter if it goes through chlorophyll or silicon.

So you’re saying that solar farm land should be taxed like farmland?

That would remove the bad incentives. Personally I agree.

How difficult would be to have some checks for actual farming taking place ?

If this allows for more solar farms AND give people incentives to also grow more food locally I'd say it's a win-win.