Question

Petiole crack' is caused by the deficiency of
A) Potassium
B) Boron
C) Molybdenum
D) Iron

Answer 1

The answer to your question is B

Answer 2

Boron

Petiole crack is caused in plant due to the deficiency of boron.Petiole is the part of that joins the leaf to the stem. It is basically a stalk .In this disease the petiole is distorted and stems may become brittle and crack .There are possibilities that the new leaves formed are of retarded growth or have necrosis. The petiole is not normal as it can be crack or brittle .