The document discusses nutrient deficiency in sulphur. It notes that sulphur is present in soil in organic and inorganic forms and is absorbed by plants as SO4--. It plays important roles in plants such as synthesizing amino acids and proteins, forming disulphide bonds, promoting root nodule formation, and synthesizing metabolites. Symptoms of sulphur deficiency include chlorosis of young leaves, accumulation of nitrates, reduced nodule formation, and premature leaf fall. Sulphur deficiency is corrected by applying recommended basal doses of elemental sulphur or gypsum to soil before planting.

1. NUTRIENT DEFICIENCY IN SULPHUR
Presented by:
Avin kharel (Roll No: 16)
Aviyan Pandey (Roll No: 17)
Awis Pant (Roll No: 18)

2. INTRODUCTION
• It is present in the soil in the form of organic and inorganic form and absorbed
by plant in the form of SO4--.
• As the source of sulphur are organic matter, inorganic minerals, rainfall , rocks
etc
• It’s concentration ranges from 0.05-1%.
• At high pH,S is found as CaSO4 and low pH So4– is adsorbed by Al and Fe
oxides.
• Behavior of sulphur in plants system is more or less similar to that of nitrogen.
eg: oxidation – reduction, mineralisation etc
• Sulpher requirements is highest for the plants of cruciferae family followed by
Leguminous and Graminae.
• It is grouped into total available organic and non-sulphite sulphur.

3. Roles of Sulphur in Plants
• Essential for the synthesis of sulphur containing amino acid
(cystine,methionine), which are essential compounds of protein.
• Help in the formation of disulphide bond between the polypeptide bond.
• It promotes root nodule formation on the root of legume.
• It involves in the synthesis of glucosides in mustard oil which increases the
oil seed.
• Help in the synthesis of other metabolites like coenzyme A, biotin,
thiamine,Vitamin B and glutathione.
• Sulfhydryl group are necessary for the activity of many enzyme.
• Helps in synthesis of chlorophyll.

4. DEFICIENCY SYMPTOMS OF SULPHUR
Deficiency symptoms are:
• Sulphur deficiency causing yellowing (I.e chlorosis) of the
leaves.The younger leaves are affected first,causing them to
convert light green to yellow.
• Accumulation of No3- in plant and reduction of protein due to S
deficiency.
• Uniformity chlorotic symptoms due to S-deficiency resemble to
N.However,N- deficiency symptoms appears on matured leaves
while S- deficiency occurs on young leaves.
• Reduction in nodule formation in legumes.
• Anthocyanin accumulation (responsible for purple colouration).
• Premature leaf fall.
Sulphur is immobile elements in plants.Leaf becomes uniformly
yellow as the chlorophyll contents declines.

5. • Rate of plant growth is reduced.Shoot growth is more
effected than root growth.
• Reduction in oil content of oil seed crops such as
mustard,rapeseed,peanut etc.
• Development of reddish colour on undersides of
leaves of cabbage and rapeseed.As the deficiency
progressed, in cabbage there is reddening and
purpling on both surface of leaves.

6. Correction
• Apply recommend basal dose of sulphur by mixing either elemental
sulphur or gypsum with surface soil before sowing.