Potassium sulfate
Premium Potassium Sulfate for Superior Plant Nutrition
Potassium sulfate (K₂SO₄) is an essential water-soluble fertilizer providing both potassium and sulfur - two vital nutrients for healthy plant growth. Our high-purity potassium sulfate delivers superior results across various agricultural applications.
Technical Specifications
- Chemical Name: Potassium sulfate (K₂SO₄)
- Appearance: White crystalline powder/granules
- Purity: ≥ 99%
- Potassium Content (K₂O): 50-52%
- Sulfur Content (S): 17-18%
- Solubility: 120 g/L at 20°C
- pH: 3-4 (1% solution)
- Moisture: ≤ 0.2%
Potassium Sulfate vs Other Potassium Fertilizers
| Property | Potassium Sulfate | Potassium Chloride | Potassium Nitrate |
|---|---|---|---|
| K₂O Content | 50-52% | 60-62% | 44-46% |
| Chloride Content | 0% | 47% | 0% |
| Secondary Nutrient | Sulfur (18%) | None | Nitrogen (13%) |
| Salt Index | 46 | 116 | 74 |
Key Applications of Potassium Sulfate
- Fertigation systems and hydroponics
- Chloride-sensitive crops (tobacco, potatoes, citrus)
- High-value horticultural crops
- Organic farming (when allowed by certifiers)
- Soil and foliar applications
Potassium Sulfate FAQ
What makes potassium sulfate better than other potassium fertilizers?
Potassium sulfate offers distinct advantages: it's chloride-free (crucial for chloride-sensitive crops), provides both potassium and sulfur, has lower salinity impact than potassium chloride, and is highly soluble. The absence of chloride prevents toxicity in sensitive plants while the sulfur content helps in protein synthesis and enzyme activation.
How should potassium sulfate be applied for optimal results?
Potassium sulfate can be applied through multiple methods: broadcast spreading (50-200 kg/ha), band placement near roots, fertigation (2-5 kg/1000L water), or foliar spray (1-2% solution). For soil application, incorporate lightly and water immediately. Split applications work best - apply 1/3 at planting, 1/3 during active growth, and 1/3 during fruit development for crops.
Is potassium sulfate suitable for organic farming?
Potassium sulfate is permitted in organic agriculture by some certification programs (check with your certifier) when mined from natural sources, not chemically produced. It provides a valuable potassium source when chloride restrictions apply. However, synthetic potassium sulfate is not permitted in certified organic operations under most standards.
Key Benefits of Our Potassium Sulfate
- Ultra-high purity (≥99%) ensures maximum nutrient efficiency
- Uniform granular size for precise application
- Low heavy metal content meets food safety standards
- Consistent quality batch after batch
- Available in multiple particle sizes for different application methods
Packaging Options
| Package Type | Size | MOQ |
|---|---|---|
| PP Bags | 25kg, 50kg | 20 MT |
| Big Bags | 500kg, 1000kg | 5 MT |
| Bulk | 20-25 MT/truck | 1 Truck |
Storage & Handling
- Store in cool, dry conditions away from incompatible materials
- Keep container tightly closed when not in use
- Shelf life: 5 years when properly stored
- Protect from moisture to prevent caking