Micronutrient · Zinc
Zinc Sulphate
Zinksulfat · ZnSO₄ · Monohydrate / Heptahydrate
21–35% Zn
Zinc Sulphate (ZnSO₄) is the standard fertilizer for correcting zinc deficiency — one of the most widespread micronutrient deficiencies, affecting an estimated half of all cereal-growing soils, especially calcareous and high-pH soils. The monohydrate (~33–35% Zn) is used for soil application and NPK blending; the heptahydrate (~21% Zn) is fully soluble for foliar feeding and fertigation. Cerantis supplies both grades to European distributors.
Product Specifications
Zinc (Monohydrate)
~33–35% Zn
Zinc (Heptahydrate)
~21% Zn
Forms Available
Monohydrate (granular/powder), Heptahydrate (soluble)
Solubility
Heptahydrate: fully soluble
Packaging
Bulk, Bigbag (1 MT), 25 kg bags
Minimum Order
1 MT
Origins
Europe, Asia
Typical Use
Foliar 0.5–1% · Soil 5–15 kg/ha
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Applications
- Correcting zinc deficiency in maize and cereals
- Foliar spray (heptahydrate) for fast correction
- Soil application and NPK blending (monohydrate)
- High-pH and calcareous soils where zinc is locked up
- Seed treatment and starter applications
Frequently Asked Questions
When is zinc fertilization needed?
Zinc deficiency is common on calcareous, high-pH soils and where phosphate levels are high, which lock up zinc. Sensitive crops include maize, cereals, beans and fruit. A soil or tissue test confirms the need before application.
Monohydrate vs. heptahydrate zinc sulphate — which to choose?
Monohydrate (~33–35% Zn) is more concentrated, stable and ideal for soil application and blending. Heptahydrate (~21% Zn) is fully water-soluble and preferred for foliar sprays and fertigation where fast uptake matters.
How is zinc sulphate applied as a foliar spray?
A typical foliar concentration is 0.5–1% (heptahydrate dissolved in water), applied in 1–3 sprays at 10–14 day intervals. Soil application of the monohydrate is usually 5–15 kg/ha depending on deficiency severity. We can advise per crop.
Can zinc be over-applied?
Yes — zinc can become toxic at very high rates, so applications should follow soil/tissue test results and recommended rates. Used correctly, zinc sulphate is a safe and highly effective micronutrient source.
Why Source This Product from Cerantis?
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- Flexible lots from 20 MT to 2,000 MT per shipment
- Swiss-registered company with full GDPR compliance
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