14-14-14 Controlled-Release Fertilizer
NPK 14-14-14 Controlled-Release Fertilizer
14-14-14 Controlled-Release Fertilizer
| Product Name: | NPK 14-14-14 Slow-release fertilizer |
| Category: | Controlled-Release Fertilizer – Products |
| Nutrient Composition: | Total N – 14%, P₂O₅ – 14%, K₂O – 14% |
| Coating Technology: | Polymer-coated granules (single or multi-layer) |
| Release Duration: | 90–180 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. |
14% Nitrogen
Total nitrogen 14% (N) of which 4% nitrate nitrogen and 10% ammonium nitrogen (optional)
14% Phosphorus
Total Phosphorus 14% (P) Diammonium phosphate 8%, monoammonium phosphate 4%, calcium superphosphate 2% (optional)
14% Potassium
Total Potassium 14% (K) Potassium Sulfate / Potassium Chloride (optional, prices vary)
Other Elements
Sulfur (5–9%), Micronutrients (Fe, Mn, Zn, Cu, B) available on request ...
14-14-14 Controlled-Release Fertilizer Description
Risso® 14-14-14 Controlled-Release Fertilizer delivers balanced NPK nutrition through advanced polymer-coating technology. Engineered for efficient and sustained nutrient release, it supports steady plant growth over multiple months while reducing environmental losses. Suitable for open-field crops, horticulture, turfgrass, greenhouse production, and landscape applications, Risso CRF 14-14-14 is the optimal choice for precision farming.
Key Technical Advantages
Balanced Macronutrient Supply:
Equal 14% N-P₂O₅-K₂O ensures uniform vegetative and reproductive growth for a wide range of crops.Controlled Nutrient Release:
Nutrient release is regulated by soil temperature (not moisture), ensuring precise, predictable supply over 3–6 months.High Nutrient Utilization Efficiency:
Polymer encapsulation reduces nutrient losses from leaching, volatilization, and fixation—boosting nutrient use efficiency (NUE) by up to 70%.Environmental Sustainability:
Minimizes nitrate leaching and phosphorus runoff, supporting cleaner water systems and sustainable agriculture practices.Compatible with Mechanized Application:
Uniform granule size enables compatibility with common spreaders, planters, and fertigation systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Total Nutrients (N+P₂O₅+K₂O) | ≥ 42% |
| Nitrogen (N) | 14% (Ammoniacal / Urea / Nitrate forms) |
| Phosphorus (P₂O₅) | 14% (≥ 90% water-soluble) |
| Potassium (K₂O) | 14% (K₂SO₄ or KCl based, on request) |
| Sulfur (S) | 4–8% (elemental or sulfate form) |
| Granule Size | 2.0–4.0 mm |
| Coating Release Period | 90, 120, or 180 days at 25 °C |
| Coating Material | Polymer resin, optionally sulfur+polymer double coating |
| Water Insoluble Content | ≤ 5% |
| Heavy Metals / Chlorine | Compliant with EU and FAO standards |
Recommended Applications
Target Crops:
Field crops: maize, wheat, rice, soybeans, cotton, sugarcane
Fruits: grapes, citrus, bananas, apples, berries
Vegetables: tomato, cucumber, pepper, lettuce, cabbage
Horticulture: turfgrass, flowers, ornamental plants, nursery stock
Forestry and plantation crops
Application Methods:
Basal application: Broadcast, banded, or incorporated into soil before sowing or transplanting
Top-dressing: Mid-season nutrition when additional demand occurs
Blending: Suitable for blends with other granular fertilizers or micronutrient additives
Application Rate (Indicative):
Field crops: 50–250 kg/ha, depending on soil fertility and crop requirement
Container plants: 2–7 g per liter of substrate
Turfgrass: 3–6 kg per 100 m²
Exact dosage should be determined via soil testing and agronomic guidance.
Release Curve (Temperature-Dependent)
| Soil Temperature (°C) | Release Duration |
|---|---|
| 15°C | ~180 days |
| 20°C | ~150 days |
| 25°C | ~120 days |
| 30°C | ~90 days |
Controlled by diffusion through the polymer membrane, ensuring gradual and synchronized nutrient availability.
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® 14-14-14 CRF?
Risso® 14-14-14 Controlled-Release Fertilizer is formulated with advanced polymer coating technology that ensures consistent, temperature-regulated nutrient release over 3–6 months. Backed by extensive field trials across Asia, Europe, and Latin America, it delivers higher yields, improved nutrient efficiency, and reduced environmental impact. Designed by agronomy experts, it supports sustainable farming and simplifies fertilization with fewer applications. Trusted globally, Risso® CRF is ideal for crops, turf, and horticultural systems requiring reliable, long-lasting nutrition.
