Growth of plants is also reduced which is more pronounced at
the time of flowering and thereafter. Inflorescence is very
poorly developed and large percentage of the floral buds of the
plants wither before opening.
Pod formation and seed setting are also reduced.
Spray 0.2% copper sulphate solution 2-3 times at weekly
Leaves show paling, that starts the margins and spreads
inward. As deficiency persists, leaves become yellow (Chlorotic)
and/or develop purple pigmentation.
The lamina of young leaves also curls inward giving these
leaves a cupped appearance.
Eventually, the lamina becomes scorched and withered.
Flowering is delayed.
Symptoms spread from young to middle leaves.
Flowers lack normal pigmentation.
Pods are borne on short peduncle and their development is
restricted. Seed setting is poor and their maturity is delayed.
Inflorescence emergence and flowering are delayed by 12 days
and its axis the normal green colour, develop very few pods in
which seed fail to develop.
Sulphur deficient plants show marked retardation in height,
thickness of stem and size of leaves.
It is advisable to use sulphur containing fertilisers:
Ammonium Sulphate - 24% S
Single Super Phosphate - 12% S
Potassium Sulphate - 18% S
Gypsum - 13-18% S
Iron Pyrites - 18-22% S
Zinc Sulphate - 15% S
Elemental Sulphur - 85-100% S
SULPHUR CONTENT OF VARIOUS FERTILIZERS (%)
Ammonium Sulphate 24%
Single Super Phosphate 12%