I got a little lost at first because of the big map with no indications. I don't think the game needed such a huge map, and adding some arrows along the path to the field and to the market would help a lot.
It was hard keeping all spots seeded, with enough water and bug-free, but it's possible. And maybe it's just me, but the controls being in a popup felt a little weird. Without the panel background and with proper icons for each button and progress bar I think it could look better.