Things that effect planting -
-Not 100% sure how much does fog effect the harvest/planting since I allways avoided it just in case-
-There is a time every now and then when for a few days up to a week you get bad crop yield. There is no valid way to get around it just wait and it will get better.
-Quiality of the soil affects only the quality of the harvested crops.
-Seed quality effects only the quality of the harvested crops.
Combination of these two gives the desiered quality of food.
Seeds do not increse the quality of the soil, however they lower the quality only if the seed quality is lower then the soil quality. If the seed quality is higher then the soil quality you will only get the food quality as a mixture of the soil and seed quality and the soil will stay the same.
How fertilizer works?
-Fertilizer(dung) has 2 roles.
1. You should pay attention to this one more then the other and I will explain why.
-Dung increses the yield of the crops. It can not go over the maximum yield ofc, example 12 flax seeds/stems is max for flax, per 1 spot.
2. Increses the soil quality ONLY if the dung quality is HIGHER then the soil quiality.
-If you just started off with farming and have low q dung, I would still use it until you get higher one.
You will get mixed q seeds in the end but try to replant those that are the highest quality if you are not in rush of food.
If the soil is 30 q for example. You use 26 q dung. Plant 10q seeds. Soil cant drop 2 much but u will get decent ammount of food back. And in time when the quality of the fertilizer increses the soil/food quality will increse.
Hope this helped a bit atleast
-UBA