If the older leaves of a plant shows yellowing and the yield is reduced, then it may be due to the deficiency of:

If the older leaves of a plant shows yellowing and the yield is reduce

1.	If the older leaves of a plant shows yellowing and the yield is reduced, then it may be due to the deficiency of:
Answer» If the older leaves of a plant shows yellowing and the yield is reduced, then it may be due to the deficiency of: