Deficiency symptoms appear in older leaves of young plants.  Leaves are yellow in colour.  But veins are remain in green colour.  Later, reddish pale yellow colour leaves are produced.  Young leaves turn completely yellow dark brownish black spots appear on the leaf.

Spraying of 1% MnSO4 during 20, 30, 40 DAS or application 10 kg of MnSO4 as a basal dose.