FLOURISH Cu SO4 ( Copper Sulphate)
Copper is involved in chlorophyll formation and is a part of several enzymes. It
is also required for symbiotic nitrogen fixation.
Leaves become light green and develop twisted tips. Panicles are poorly filled
and may even remain empty if the deficiency is severe.
Copper sulphate pentahydrate; contains 24 % copper.
Copper sulphate monohydrate; contains 35 % copper.
Dose and application method:
Foliar spray of 0.025 % solution of copper sulphate (pentahydrate) at
appearance of symptoms or soaking of seeds in 0.25 % copper sulphate
solution in case of rice or soil application of 1.5-2 kg copper sulphate / ha once
in 4-8 years is recommended.
. General Precautions:
Never mix zinc, iron or copper micronutrient fertilizers with phosphatic fertilizers
as these elements are rendered less soluble.
Avoid excessive use of phosphorous as it adversely affects utilization of zinc,
iron and copper
Excess of iron adversely affects utilization of zinc and manganese; conversely
excess of zinc, manganese and copper induces iron deficiency in crops. Thus
mixing of iron containing fertilizers with zinc, manganese and copper fertilizers
should be avoided. Further, over-use of micro-nutrients should also be avoided.
Excess of sulphur and copper induces molybdenum deficiency in crops. Thus
application of sulphur and copper should be within recommended doses.
Excessive use of lime or liming material should be avoided as it induces zinc,
iron, and manganese and boron deficiency.
Management of acid soils:
Acid soils occupy vast area in high rainfall, mountains and coastal regions of
India. The soils are highly leached, have poor fertility and water-holding capacity.
Acid soils are deficient in phosphorus, calcium, magnesium and molybdenum. Severe
acidity often causes iron and aluminum toxicity to crops. Acid soils are low in organic
carbon, water retention and prone to run off-induced erosion. These constraints lead
to sub optimal productivity of crops raised in acid soils.