Iron deficiency has been founded in mostly calcareous and alkaline soils. Iron is important in Synthesis of chlorophylls. It is necessary for photosynthetic activity. It is also used for chemical Reduction of nitrate sulphate and in nitrogen assimilation. The symptoms of deficiency rice that Interviral chlorosis in streaks is observed. The leaves are driving from tip and margins.

The leaves become white and die. In wheat leaves turn white and die. Ferrous sulphate contains 20% iron. It is generally used in rice, wheat, pulses. It should apply as foliar spray of 1% solution 2-3 times at weekly. Average yield increases due to ferrous sulphate.