I really enjoyed your game!
I think that if you were to continue adding upon it, that having an automated system for planting and harvesting plots could be nice! The further to get the more plots you have to go back and plant and it can get a little overwhelming!
It may have been just my playthrough of it, but the values seem mostly to just increase rather than decrease for me, maybe you could try to make the game more punishing and risky when it comes to the market prices and the time it takes to plant.
Overall, I really enjoyed it! Great job!