Nitrogen relevance
Proteins DNA Cholorphyll
Nitrogen deficiency symptoms
Pale leaves
Oldest pale first
Potassium relevance
Coenzyme
Potassium deficiency symptoms
Yellow edges starting at edges
Calcium relevance
Middle lamellae
Calcium deficiency symptoms
Hooked leaves
Withered
Phosphorus relevance
ATP
Phosphorus deficiency symptoms
Stunted growth
Purple-ish leaves
Magnesium relevance
Chlorophyll
Magnesium deficiency symptoms
Yellow spots Curled leaf edges
Sulfur relevance
Some amino acids
Sulfur deficiency symptoms
Pale leaves and pale veins