Nice idea having a farmer as a platformer character! Haven't seen that before. The level design was done quite well with an increasing difficulty.
In the tutorial level I wondered why "Y" didn't do anything until I figured out that was meant for controllers only. Maybe you can do something to clarify that.
I had to redo the last level a few times and in the end solved it by doing one jump at the start of that level from the edge of a ledge to save one rock. Don't know it that's the intended solution, didn't feel right, more like loop holing.
Personally I found the music - which I do like - to be "eastern" themed, like ancient China or so, something the game's theme doesn't match.