SOP 00 00 50 - Potassium Sulphate for Plants Growth, 100% Water Soluble Powder, Foliar Spray Nutrition | NPK Fertilizers for Home Garden & Crops

It is 100% water-soluble Potassium Sulphate (K₂SO₄) containing:

• 50% Potassium (K₂O)
• 17–18% Sulphur (S)
• 0% Nitrogen, 0% Phosphorus
• 0% Chloride (Cl-) → chloride-free, hence safe for all sensitive crops.

Suitable for all crops in the fruiting, quality improvement, and finishing stages.

• Potassium deficiency → yellow leaf edges, weak fruits, poor color
• Sulphur deficiency → yellowing in young leaves, weak aroma/flavor

Yes — excellent for terrace gardening and fruiting plants like lemon, chilli, tomato, guava, pomegranate.

Potassium regulates:

• Water balance
• Stomatal movement
• Fruit size & quality
• Disease resistance
• Sugar movement (brix)
• Stress tolerance

• Increases oil content
• Enhances protein formation
• Improves aroma (essential oils)
• Makes fruits sweeter & richer

• 13-40-13 emphasizes phosphorus (40% P₂O₅) while delivering moderate N and K.
• 19-19-19 or 20-20-20 are balanced in all three nutrients (equal or near equal N/P/K).
• Use 13-40-13 when you want P priority (rooting, flowering) rather than equal all-round nutrition.

Yes — potassium improves:

• Stomatal control
• Water-use efficiency
• Heat tolerance
• Drought resistance

Perfect for stressed crops.

Absolutely — widely used in:

• Tomato
• Cucumbers
• Capsicum
• Strawberry
• Rose
• Gerbera

Potassium Deficiency-

Occurs in older leaves first:

• Yellowing or browning of leaf margins
• Dead tissue at leaf edges
• Wrinkled or weak leaves
• Weak fruit set
• Low fruit size
• Poor color & sweetness

Sulphur Deficiency-

Occurs in younger leaves:

• Light green or yellowing
• Slow plant growth
• Low aroma (in spices)
• Reduced oil content

SOP corrects both deficiencies.

 Because of:

• Chemical structure (K₂SO₄) — sulphate form dissolves slower than nitrate or phosphate salts
• Lower solubility limit (only ~120 g/L at 25°C)
• Crystalline hardness
• Less hygroscopic nature

This is normal, and it is the same for SOP products across the world.

No.
The effectiveness is the same once SOP is fully dissolved and applied.
Only dissolving time increases in winter — the nutrient performance is not affected.

Most nitrate and phosphate fertilizers dissolve much faster even in winter.

NOP 13:00:45

Dissolves easily even at 10–15°C

MAP 12:61:00

Dissolves quickly, minimal impact

MKP 00:52:34

Moderate effect, still dissolves well

NPK 19:19:19

Fast dissolving

SOP 00:00:50

Significant slowdown in cold weather

So SOP is the most affected by winter temperatures.

Follow these simple practices:

✔ Use warm water (30–40°C)

Helps SOP dissolve quickly.

✔ Pre-dissolve in a separate bucket

Stir for 10–15 minutes before transferring into the mother tank.

✔ Use an aerator or circulation pump

Keeps solution moving → faster dissolution.

✔ Avoid overloading the tank

Never add more SOP than its solubility limit in cold water.

✔ Use clean, soft water

Hard water reduces solubility further.

YES — even in winter:

• Zero chloride
• Improves taste & quality
• Safe for all sensitive crops
• Adds sulphur (protein/oil formation)
• Enhances color, shine & sweetness

Solubility is only a handling factor, not a performance factor.