FLOURISH Fe SO4 ( Ferrous Sulphate)
Cas number: 7782-63-0
Ferrous sulphate heptahydrate
Appearance : green color crystal
Fe : 19 % ferrous sulphate powder
Appearance : white colour powder
fe : 25 % min
Molecular formula: FeSO4.7H2O
Molar mass: 151.908 g/mol (anhydrous)
Density: 2.84 g/cm3 (anhydrous)
Melting point: 70 °C (dehydration of heptahydrate), 400 °C (decomp)
Ferrous sulphate (FeSO4. 7H2O); contains 20 % iron.
Iron plays an important role in synthesis of chlorophyll which is essential for
photosynthetic activity. It is also required for chemical reduction of nitrate and
sulphate and in nitrogen assimilation.
2.4.2. Deficiency symptoms:
Rice: Interveinal chlorosis in streaks is noticed. Drying of leaves starts from
tips and margins. Under severe conditions, leaves become white and die.
Wheat: Deficiency of iron is manifested as interveinal chlorosis of upper most
leaves. As deficiency intensifies, leaves turn almost white and die.
Pulses: Yellowing of interveinal areas of young leaves is commonly noticed in
iron deficient plants. Severity leads to pale-white discoloration of leaves.
Dose and application method:
Ferrous sulphate is most commonly used source of iron. Soil application @ 50
kg/ha to rice, wheat or pulses every 3 years or 15 kg/ha every year is recommended. However, it is more effective when applied as foliar spray of 1 % solution, 2-3 times at weekly interval in rice, wheat or pulse crops.