Q. Necrosis in crops is due to the deficiency of which ions/elements?

1. Calcium, phosphorous, potassium, zinc
2. Sulphur, calcium potassium, sulphur, molybdenum
3. Nitrogen, potassium, sulphur, molybdenum
4. Manganese, sulphur, nitrogen, calcium

Hello Student,
Please find answer to your question below:

Correct answer is 2. Sulphur, calcium, potassium, sulphur, molybdenum
Deficiency of sulphur leads to chlorosisi followed by necrosis
Deficiency of calcium leads to stunted growth, chlorosis, necrosis,and curling.
Deficiency of potassium leads to chlorosis, followed by necrosis.
Deficiency od molybdenum leads to marginal necrosis.

No, The correct answer is 3.......Cause due to deficiency of nitrogen, sulphur, Molybdenum...causes Necrosis.