Chemical properties and physiological importance
- Potash content (K2O - 50%): Drives rapid sugar and carbohydrate translocation from leaves into developing grains, tubers, and fruits.
- Sulphur content (S - 17.5%): Synthesizes essential amino acids (methionine, cysteine), boosts aromatic oil synthesis, and improves protein content.
- Chloride-free: Has a very low salt index and zero chloride, making it safe for chloride-sensitive crops and saline soils.
- Complete water solubility: Dissolves rapidly and cleanly without particulate deposits, preventing dripper emitter blockages.
Crop benefits and critical application stages
- Fruit development and sizing: Applied during fruit enlargement in grapes, pomegranate, banana, citrus, mango, and papaya to improve weight.
- Sugar and color enhancement: Enhances brix percentage, skin shine, natural fruit coloration, and uniform ripening in fruit crops.
- Grain and tuber filling: Boosts tuber bulking in potato and onion, and grain filling in paddy, wheat, and maize, preventing unfilled chaff.
- Post-harvest shelf life: Strengthens cell walls, significantly improving storage capability and transit durability.
Application methods, fertigation, and compatibility
- Foliar spray: Dissolve 4 to 5 grams per litre of water (or 1 kg per acre in 200 litres of water); apply during late fruit development.
- Drip fertigation: Apply 2 to 4 kg per acre per fertigation cycle according to crop stage nutrient recommendations.
- Compatibility: Compatible with most neutral agrochemicals; do not mix with calcium-based fertilizers to avoid insoluble calcium sulphate precipitation.
- Storage instructions: Keep in a sealed moisture-proof bag stored in a dry, ventilated warehouse.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Department of Fertilisers (Govt of India) ↗Related on KisanPe
Common questions
What nutrients are present in 00:00:50 fertilizer?
It contains 50% Potassium (K2O) and 17.5% Sulphur (S), with zero nitrogen and zero phosphorus.
When is 00:00:50 fertilizer applied to crops?
It is applied during the reproductive and maturity stages: fruit bulking, tuber development, and grain filling.
Why is Potassium Sulphate preferred over Muriate of Potash (MOP)?
Potassium Sulphate is chloride-free with a lower salt index, making it ideal for chloride-sensitive fruits, tobacco, and potato.
Can 00:00:50 be mixed with Calcium Nitrate?
No, mixing SOP with Calcium Nitrate causes insoluble calcium sulphate (gypsum) precipitation, which clogs drip emitters.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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