21-7-14 Controlled-Release Fertilizer
NPK 21-7-14 Controlled-Release Fertilizer
21-7-14 Controlled-Release Fertilizer
| Product Name: | NPK 21-7-14 Slow-release fertilizer |
| Category: | Controlled-Release Fertilizer – Products |
| Nutrient Composition: | Total N – 21%, P₂O₅ – 7%, K₂O – 14% |
| Coating Technology: | Polymer-coated granules (single or multi-layer) |
| Release Duration: | 90–120 days (temperature-dependent) |
| Granule Size: | 2.0–4.0 mm (customizable) |
| Secondary Nutrients: | Sulfur (3–6%), 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. |
21% Nitrogen
Total nitrogen 21% (N) of which 6% nitrate nitrogen and 15% ammonium nitrogen (optional)
7% Phosphorus
Total Phosphorus 7% (P) Diammonium phosphate 6%, monoammonium phosphate 1%, (optional)
14% Potassium
Total Potassium 14% (K) Potassium Sulfate / Potassium Chloride (optional, prices vary)
Other Elements
Sulfur (3–6%), Micronutrients (Fe, Mn, Zn, Cu, B) available on request ...
21-7-14 Controlled-Release Fertilizer Description
Precision Nutrition for Turf, Ornamentals, and Agricultural Crops
Guaranteed Analysis (NPK 21-7-14)
Total Nitrogen (N): 21%
A proprietary blend of quick-acting nitrate, ammoniacal nitrogen, and advanced polymer-coated urea ensures immediate response and extended nutrient availability.Available Phosphate (P₂O₅): 7%
Promotes early-season vigor and root mass development; fully water-soluble and citrate-soluble for rapid uptake.Soluble Potash (K₂O): 14%
Enhances drought resistance, cell wall strength, and fruit quality—ideal for stress periods and yield formation.
Controlled-Release Technology
Risso® 21-7-14 uses next-generation coating systems—including polymer-coated urea (PCU) and sulfur-coated urea (SCU)—to deliver nutrients gradually in sync with plant demand. Nutrient release is regulated by soil temperature and microbial activity, minimizing leaching and volatilization losses.
Release Duration: Up to 90–120 days, depending on soil temperature and environmental conditions.
Technology Used: Risso® PolyMatrix™ or SCU-X™ (based on product version).
Key Applications
Turfgrass Management – Perfect for golf courses, sports fields, and landscape professionals seeking uniform color and consistent growth.
Ornamentals & Horticulture – Enhances flowering, foliage development, and root establishment in containerized and bedding plants.
Nursery Production – Promotes stable nutrition in container-grown trees and shrubs over extended production cycles.
Agricultural Crops – Suitable for row crops, fruits, and vegetables where precision nutrient release is critical for yield efficiency.
Product Benefits
✅ Balanced NPK Ratio (3:1:2) – Supports photosynthesis, robust root growth, and structural strength.
✅ Extended Nutrient Release – Reduces frequency of application, saving on labor and input costs.
✅ Environmentally Sustainable – Low leaching risk; supports regenerative and climate-smart agriculture.
✅ Enhanced Nutrient Use Efficiency (NUE) – Maximizes return on fertilizer investment through synchronized uptake.
✅ Dust-Free Granules – Homogeneous size for even spread and clean handling during application.
Typical Application Rates (General Guidance)
| Application Area | Rate (kg/ha) | Frequency |
|---|---|---|
| Turfgrass (Fairways) | 250–400 kg/ha | Every 10–12 weeks |
| Ornamentals | 3–6 g per liter soil | At planting or topdress |
| Field Crops | 200–350 kg/ha | Once per season |
- Note: Always follow soil test recommendations and local agronomic guidelines.
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® 21-7-14 CRF?
Risso® 21-7-14 Controlled-Release Fertilizer delivers balanced, long-lasting nutrition through advanced polymer and sulfur coating technologies. Its 3:1:2 NPK ratio supports strong root development, lush green growth, and improved stress resistance. Ideal for turf, ornamentals, and crops, it reduces nutrient loss and minimizes application frequency—saving time and costs. Trusted by professionals worldwide, Risso® ensures efficient nutrient uptake, consistent performance, and environmental sustainability in every application.
