Stem melanosis disease occurs in wheat due deficiency of

A. Mn

B. Cu

C. Zn

D. Fe

Answer: Option B

Solution(By Examveda Team)

Stem melanosis, a disease of spring wheat and was first reported in 1965. The diseased plants are characterized by bleached empty heads and by blackening of the rachis, peduncle and stem immediately beneath the nodes.
This disease in wheat is caused by Pseudomonas cichorii grown on soil because of the deficiency of copper.