Perhaps you could require an organic farmic certificate or something, rather than a promise. At a vary least such certificate should in theory prohibit from using anything harmful to the environment. I got one, but mainly for higher subsidies.
1 karma · joined December 24, 2022
1. You should not feel obliged to continue your father's work. You're a different person and I'm sure your father would prefer you to be happy above the farm staying in the family. If you think selling the land is a better option, do it. If you built your own career, don't sacrifice it for the farm.
2. Consider leasing it. I'm in the EU so I get subsidies (even if there's nothing there but grass), plus a lease from people who want to actually grow something there.