Mobility and symptom location
Calcium is shown as immobile, so deficiency signs appear first in new growth.
Magnesium is shown as mobile, so the plant pulls it from older leaves first.
Sulfur is grouped here with new-growth symptoms on the poster, with paling starting in the youngest leaves.
Calcium deficiency progression
Early stage
deformed new growth and distorted young leaves
Mid stage
necrotic lesions and brown spotting on affected leaves
Late stage
apical dieback and death of growing tips
Magnesium deficiency progression
Early stage
interveinal chlorosis on older leaves
Mid stage
bronzing, rust spots and leaf curling
Late stage
leaf drop and premature defoliation
Sulfur deficiency progression
Early stage
uniform yellowing of the youngest leaves
Mid stage
thin stems and an overall pale plant color
Late stage
bleached leaves and severe chlorosis