Four common problems with garden soils, particularly when chemical fertilizers are used. The recommended change is to use fertilizers with "natural" ingredients and biological components to restore balance. Each problem has a recommended fertilizer mix which may fix the imbalance.
http://www.offthegridnews.com/survival-gardening-2/4-common-soil-problems-and-how-to-easily-fix-them/1)
Nitrogen deficiency/oversupply
2)
Potassium deficiency/oversupply
3)
Phosphorous deficiency/oversupply
4)
Sulfur deficiency/oversupply
DO NOTE that this article uses chemical fertilizers and