Nutrient deficiency in sulphur presentation

Nutrient deficiency in sulphur presentation
By, (Avin Kharel, Aviyan Pandey, Awis Pant)

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.