Sulphur or Sulfur (S) in plants
Sulphur is the constituent of some amino acids and not mobile in plants.
Sulphur contributes to smell and taste of vegetables.
It is also present as a part of vitamin-B1 (thiamine) and biotin, also required for many co-enzymes.
It is absorbed as SO4 ion from the soil.
Deficiency symptoms of this mineral are as follows:
leaves of the plant appear to be pale green and with dead spots; veins appear lighter in colour than the adjacent area
Yellowing of young leaves (show chlorosis first)
Responsible for stunted growth of plant; stems and roots remain small in size
Accumulation of purple pigments
Causes inhibition of protein synthesis