15-5-20 Controlled-Release Fertilizer
NPK 15-5-20 Controlled-Release Fertilizer
15-5-20 Controlled-Release Fertilizer
| Product Name: | NPK 15-5-20 Slow-release fertilizer |
| Category: | Controlled-Release Fertilizer – Products |
| Nutrient Composition: | Total N – 15%, P₂O₅ – 5%, K₂O – 20% |
| Coating Technology: | Polymer-coated or sulfur-coated granules |
| Release Duration: | 30–90 days (temperature-dependent) |
| Granule Size: | 2.0–4.0 mm (customizable) |
| Secondary Nutrients: | Sulfur (4–8%), Micronutrients (Fe, Mn, Zn, Cu, B) available on request |
| Payment Terms: | T/T, L/C, cash(USD, EUR, RMB) |
| Certificate: | ISO 22241-1, ISO 9001 standard. |
15% Nitrogen
Total nitrogen 15% (N) of which 5% nitrate nitrogen and 10% ammonium nitrogen (optional)
5% Phosphorus
Total Phosphorus 5% (P) Diammonium phosphate 4%, monoammonium phosphate 1%, (optional)
20% Potassium
Total Potassium 20% (K) Potassium Sulfate / Potassium Chloride (optional, prices vary)
Other Elements
Sulfur (5–9%), Micronutrients (Fe, Mn, Zn, Cu, B) available on request ...
15-5-20 Controlled-Release Fertilizer Description
Risso® 15‑5‑20 Controlled‑Release Fertilizer is a premium-grade, polymer/sulfur-coated granular fertilizer engineered to deliver balanced and sustained nutrient release. Specially formulated for high-value crops, turfgrass, horticulture, and plantation use, this advanced NPK solution ensures optimal nutrient availability throughout the plant’s growth cycle—reducing nutrient losses, minimizing leaching, and maximizing return on investment.
Key Technical Advantages
Optimized NPK Ratio (15-5-20)
15% Total Nitrogen (N) – Supports vigorous vegetative growth and chlorophyll production.
5% Available Phosphate (P₂O₅) – Stimulates early root development and flowering.
20% Soluble Potash (K₂O) – Enhances fruit quality, plant resilience, and water-use efficiency.
Controlled-Release Technology (CRT)
Uses advanced coating technologies (polymer/sulfur/organic resin) to modulate nutrient release over 60–120 days.
Synchronizes nutrient availability with crop demand to improve nutrient use efficiency (NUE).
Micronutrient Fortified (Optional)
Can be customized with secondary and micronutrients (e.g., Mg, S, Zn, Fe, Mn, B, Cu, Mo) to correct deficiencies and enhance crop metabolism.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Risso® NPK 15‑5‑20 Controlled‑Release Fertilizer |
| Form | Free-flowing granules, 2–4 mm uniform particle size |
| Coating Type | Polymer, sulfur, or hybrid organic-inorganic coating |
| Release Period | 60–120 days (temperature-dependent) |
| Moisture Content | ≤ 2.5% |
| Bulk Density | ~1.0 g/cm³ |
| pH | 5.5 – 7.0 |
| Packaging | 25 kg & 50 kg woven PE/PP bags (custom bulk options available) |
| Shelf Life | 24 months in dry, cool storage conditions |
| Certifications | ISO 9001:2015 |
Benefits of Risso® Controlled-Release Fertilizer
Efficient Nutrient Uptake
Reduces volatilization, leaching, and fixation—delivering up to 30% more effective nutrient utilization vs. conventional fertilizers.Extended Release Curve
One-time application provides consistent nutrition for 2–4 months depending on soil temperature, moisture, and coating type.Sustainable Agriculture Solution
Lower environmental impact: reduced nitrate runoff, phosphate fixation, and carbon emissions.Labor & Cost Saving
Fewer applications required per season, minimizing operational costs in commercial farming and landscaping.Wide Applicability
Ideal for open-field crops, orchards, greenhouses, nurseries, and turfgrass. Compatible with mechanical or manual spreading systems.
Application Guidelines
| Crop Type | Recommended Dosage | Method |
|---|---|---|
| Vegetables & Field Crops | 100–200 kg/ha base or side dressing | Broadcast or banded |
| Fruit Trees | 500 g – 2 kg/tree depending on age | Ring application or drip |
| Ornamental Plants | 10–30 g per pot (depending on size) | Top dressing or mixing |
| Turf & Golf Courses | 30–50 g/m² every 2–3 months | Spread evenly + irrigation |
Packaging & Customization
Standard Pack Sizes: 9.5kg, 25 kg PE-lined woven bags, 500 kg jumbo bags
Custom Services: OEM/ODM labeling, tailored NPK ratios, coating duration, micronutrient enrichment, and color coding for granules
Certifications: ISO 9001, ISO 14001, REACH compliance; RoHS and heavy metal limits upon request
Shelf Life: 2 years under dry, ambient storage conditions
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Why Choose Risso 15-5-20 Controlled-Release Fertilizer
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Crop-Specific Solutions – Tailored formulations for various growth stages.
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Reduced Environmental Impact – Clean farming with fewer emissions and leachate losses.
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Higher ROI – Better nutrient recovery, fewer applications, superior yield response.
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Reliable Quality – Backed by stringent QC protocols and ISO-certified production facilities.
