Question

Deficiency of which nutrients or chemical elements is responsible for yellowing of leaves

Answer 1

mostly cause by deficiency of *Iron* but also cause by deficiency of zinc and nitrogen

Answer 2

Some symptoms of nitrogen deficiency (in absence or low supply) are given below : The chlorophyll content of the plant leaves is reduced which results in pale yellow color (chlorosis). Older leaves turn completely yellow. Flowering, fruitings, protein and starch contents are reduced.