Grey spots of oat are caused by deficiency of

A. Cu

B. Zn

C. Mn

D. Fe

Answer: Option C

Solution(By Examveda Team)

Grey spots of oat are caused by a deficiency of Mn.
Leaves of Manganese deficient oats plants show chlorotic spots and streaks which turn grey-white to brown and coalesce.
Symptoms appear on younger and central leaves. Leaves are kinked or bent down when the spotting is intense. Plant growth is stunted.