Which mineral elements cause stunted growth when deficient?

$A$: Manganese toxicity causes brown spots,chlorotic veins,and inhibition of calcium translocation to the shoot apex.
$R$: Toxic effects may be due to direct excess of micronutrients or their interference in the absorption and functioning of other nutrients.

The cauliflower becomes brown due to the deficiency of:

The deficiency of this micronutrient results in little leaf disease.

Grey spots on oats are caused by the deficiency of which element?

On the basis of symptoms of chlorosis in leaves,a student inferred that this was due to the deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves appeared first in