Wholesale Ammonium Sulfate Fertilizer 21-0-0

      Nitrogen Content (N)‌: 21% (ammonium-nitrogen form, immediately plant-available).

 ‌     Sulfur Content (S)‌: 24% (as sulfate, crucial for protein synthesis).

      Solubility‌: 77 g/100 mL water (25°C) – fully water-soluble for fertigation/foliar use.

      pH‌: ~5.5 (acidic; lowers soil pH with repeated use).

      Particle Size‌: 1–4 mm granules (standard) or fine crystals for blending.

‌      Moisture Content‌: ≤0.5% (to prevent caking).

      Heavy Metals‌: ≤10 ppm arsenic, ≤50 ppm lead (meets WHO/FAO limits).

‌Soil Adaptation‌:

Ideal for alkaline or sulfur-deficient soils; lowers soil pH.

Not recommended for acidic soils or long-term monoculture due to acidification risk.

‌Crop Suitability‌:

Highly effective for sulfur-loving crops (e.g., onions, garlic, cruciferous vegetables).

Boosts yield in cereals (rice, wheat), legumes, sugarcane, and fruits.

‌Basal Fertilizer‌: Incorporate into soil pre-planting (20–40 kg/acre).

‌Top Dressing‌: Side-dress during growth (15–25 kg/acre).

‌Seed Fertilizer‌: Safe for direct seed contact (≤3 kg/acre).

Avoid use in waterlogged fields (e.g., paddy rice).

‌Pros‌:

Rapid nutrient release, 100% water-soluble for drip irrigation/foliar spray.

Enhances soil microbial activity and organic matter decomposition.

Contains no biuret, making it safer for sensitive crops.

‌Cons‌:

Acidifies soil over time; requires pH monitoring.

Incompatible with alkaline substances (e.g., lime, ash) to prevent ammonia loss.

‌Rare Earth Extraction‌: Ion exchanger for rare earth ores (5 tons consumed per ton of ore).

‌Additional Roles‌: Protein purification in biotech, catalyst in food processing (e.g., soy sauce coloring), and electrolyte in batteries.

‌Storage‌: Keep dry to prevent caking.

‌Reactivity‌: Forms insoluble BaSO₄ with barium chloride; releases ammonia when mixed with alkalis.