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Question

Which of the following elements causes necrosis due to its deficiency?


  1. N, K, Mg and Fe

  2. Mn, Zn and Mo

  3. Ca, Mg, Cu and K

  4. N, K and S


Solution

The correct option is C

Ca, Mg, Cu and K


Deficiency of calcium leads to stunted growth, chlorosis, necrosis,and curling.
Deficiency of magnesium leads to interveinalchlorosis which turns necrotic.
Deficiency of potassium leads to chlorosis, followed by necrosis.
Deficiency of copper leads to marginal necrosis.
Ca, Mg, Cu and K

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