After reading a few conversations it seems the farming skill might be a little off in regards to survival.
Apparently seeds are a trait which I find a little ridiculous considering how vegetables and fruit work in real life.
I do think the farming skill could be as simple as <I've planted corn, watered it all> but you end up with a low yield or even rotted roots because you over watered a plant without knowing
Those <without knowing> could be a great life/death scenario where you want your best farmers to try and farm, not the one who'll ruin your seeding and planting.
Root rot is the bigger contention, could also have your garden infected with pests if the person doesn't have enough skill when planting
Each time you plant or something bad happens. You'd gain skill from that fact.