Product Description
Sulphate of Potash (SOP) provides 50% K₂O and 18% sulphur without any chloride. The preferred potassium source for chloride-sensitive crops and export-grade fruit production.
Unlike Muriate of Potash (MOP/KCl), SOP does not contain chloride ions that reduce fruit quality, lower Brix, cause leaf tip burn and reduce shelf life. Standard for grape, potato, tobacco, citrus and all chloride-sensitive crops.
The sulphur component (18% S) addresses increasingly common sulphur deficiency in Indian soils — sulphur is essential for amino acid synthesis, enzyme activation and glucosinolate metabolism. SOP simultaneously addresses K and S nutrition in a single application.
Technical Specifications
| Potassium (K₂O) | 50.0% min |
| Sulphur (S) | 18.0% min |
| Chloride (Cl) | <1.0% |
| Nitrogen | 0% |
| Phosphorus | 0% |
| Moisture | 0.5% max |
| pH (1% solution) | 6.5–7.5 |
| Water Solubility | 120 g/L at 20°C |
Key Benefits
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Zero chloride — safe for all sensitive crops
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Improves fruit firmness, colour and shelf life
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Simultaneous potassium and sulphur supply
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Reduces physiological disorders
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Standard for export-quality horticulture
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Enhances resistance to fungal diseases
Recommended Crops
Grapes (all varieties)PotatoTobaccoCitrusStrawberryTeaCoffeePepper
Dosage & Application Guide
| Fertigation | 3–6 kg per acre per application |
| Foliar Spray | 3–5 g per litre |
| Final Ripening Stage | 4–6 kg/acre every 7–10 days |
| Basal Soil (broadcast) | 25–50 kg/acre |
⚠️ Note: Dosage recommendations are indicative. Actual application rates should be based on soil test results, crop stage, yield targets and local agronomic conditions. Consult a Green Vision agronomist or visit SoilPro.in for AI-powered crop-specific recommendations.
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