Nitrogen (N) 15% – promotes vigorous vegetative growth and robust foliage.
Phosphorus Pentoxide (P₂O₅) 5% – supports early root establishment and flowering.
Potassium Oxide (K₂O) 20% – enhances stress tolerance, water regulation, and fruit quality.
90‑Day Controlled Release: Advanced polymer or sulfur-coated granules provide steady nutrient delivery over ~90 days, matching crop uptake and reducing the need for repeated applications.
NPK 15-5-20 90-Day Controlled-Release Fertilizer
Balanced, Long-Lasting Nutrition for Vegetables, Fruits, Field Crops, and Sustainable Agriculture


NPK 15-5-20 90Day CR Fertilizer Detailed Specifications
Terafon® NPK 15‑5‑20 90‑Day Controlled-Release Fertilizer is a high-quality, polymer-coated NPK formulation designed for season-long crop nutrition. Its 15‑5‑20 nutrient ratio supports vigorous vegetative growth, strong root development, and improved fruiting performance. The controlled-release technology ensures synchronized nutrient availability, improving fertilizer efficiency and supporting sustainable agriculture practices.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| N–P₂O₅–K₂O Composition | 15–5–20 |
| Controlled-Release Duration | ~90 days (temperature & moisture dependent) |
| Coating System | Advanced polymer/sulfur-based controlled release |
| Granule Size | 2–4 mm, free-flowing |
| Moisture Content | ≤ 2.5% |
| Optional Nutrients | S, Mg, Fe, Mn, Zn, Cu, B, Mo |
Key Features & Agronomic Benefits
1. Balanced Whole-Cycle Nutrition
- The 15‑5‑20 NPK ratio provides ample nitrogen for vegetative growth, phosphorus for root development, and high potassium to enhance fruiting, stress tolerance, and overall crop quality.
2. Long-Lasting Controlled Release
- Polymer or sulfur-coated granules release nutrients steadily over ~90 days, reducing nutrient peaks and deficiencies while lowering labor and re-application frequency.
3. Improved Fertilizer Efficiency
- Stable nutrient diffusion improves uptake efficiency, minimizes leaching and volatilization, and promotes environmentally sustainable fertilization practices.
4. Broad Crop Compatibility
- Ideal for vegetables, fruits, field crops, orchards, ornamentals, and turfgrass, ensuring consistent growth and quality across multiple cultivation systems.
Application & Usage Guidelines
Application Methods
- Pre-Plant Broadcast: Apply evenly before sowing or transplanting.
- Band or Row Placement: Place near the root zone for optimal nutrient uptake.
- Soil Incorporation: Suitable for nursery trays, raised beds, and containers.
Best Practices
- Base fertilizer rates on soil tests and crop nutrient demand.
- Apply prior to irrigation or rainfall to activate controlled-release nutrients.
- Avoid mixing with incompatible chemicals during application.
Note: Additional fertilization is generally unnecessary during the 90-day release period.
Recommended Crops
- Vegetables and leafy greens
- Fruits and orchard crops
- Field crops and cereals
- Ornamentals and nursery plants
Lawns and turfgrass
Packaging & Storage
- Packaging Options: 25 kg & 50 kg woven PP bags; 500–1,000 kg jumbo bags.
- Storage Conditions: Cool, dry, ventilated warehouse; protect from moisture and direct sunlight.
Shelf Life: Anti-caking treated for long-term storage and handling stability.
Why Choose Terafon® NPK 15-5-20 90-Day CR Fertilizer?
- Balanced, professional-grade NPK formulation for diverse crops
- Reliable 90-day controlled nutrient release for season-long growth
- Enhanced fertilizer efficiency and reduced environmental impact
- Simplified crop nutrition management with fewer applications
Supports sustainable and high-yield agriculture
Terafon® NPK 15‑5‑20 90-Day Controlled-Release Fertilizer delivers precise, long-lasting nutrition to enhance crop vigor, yield, and quality across all growth stages.
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Why Choose Terafon for Your Fertilizer Needs
90-Day Controlled Release for Long-Term Crop Nutrition
Terafon 90-Day CR NPK 15‑5‑20 Fertilizer delivers balanced coated nutrients with a steady release pattern to support extended crop cycles efficiently.
Uniform Granules & Consistent Nutrient Delivery
Granules sized 2–4 mm ensure smooth handling and even field coverage, providing uniform nutrient supply for pre-planting, top-dressing, or fertigation.
High Quality & Soil-Enhancing Performance
Strict production control maintains low moisture, minimal impurities, excellent storage stability, reduced caking, and long-term soil fertility improvement.
Proven Efficiency for Sustainable Agriculture
Trusted by growers, this 90-day CR NPK 15‑5‑20 fertilizer supports high-efficiency nutrition and sustainable growth for vegetables, fruits, field crops, and orchards.
Optimize Your Crop Nutrition with Terafon NPK 15‑5‑20
Contact us today to discover how Terafon’s 90-Day Controlled-Release NPK 15‑5‑20 fertilizer can provide balanced nutrients, enhance crop growth, improve soil fertility, and support sustainable agriculture.









