Potassium and Sulphur

Potassium and Sulphur:

Potassium:

Potassium is needed in the meristematic areas and regions of cell differentiation. This accumulates in older leaves. Although it does not contain a structural role, it is included in stomatal opening and closing. This is an activator of numerous enzymes and has a role in carbohydrate and protein metabolism.

Deficiency symptoms:

a. Leaf tips curve down.
b. Causes mottled chlorosis.
c. Expansion of chlorosis at tips and margins of leaves.
d. Shortening of internodes and stunted development.

Sulphur:

Sulphur is the constituent of some vitamins like biotin and thiamine. This is the constituent of coenzyme-A playing a significant role in respiration. It makes the sulphydryl group in numerous enzymes and is a constituent of sulphur having amino acids like cysteine, methionine and cystine.

Deficiency symptoms:

a. It causes inhibition of protein synthesis.

b. Younger leaves exhibit chlorosis initially.

c. Chloroplasts of mesophyll exhibit a reduction in stroma lamellae however grana raise.

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