Controlled-Release Urea with Nitrification Inhibitor combines precise, regulated nitrogen availability with biological nitrification inhibition. Designed for progressive fertilizer importers, distributors, industrial blenders, and commercial agricultural producers, this dual-action technology delivers maximum nitrogen use efficiency (NUE) while minimizing leaching and volatilization losses.
This granular nitrogen fertilizer pairs a high-purity urea core with two distinct functional technologies:
Controlled-Release System: Regulates the daily diffusion rate of urea nitrogen into the soil solution over a target duration.
Nitrification Inhibitor: Temporarily inhibits Nitrosomonas bacteria in the soil, slowing the conversion of ammoniacal nitrogen into nitrite and nitrate.
Technical Parameters & Buyer Comparison Guide
|
Quality Parameter |
Verification & Specification Standards |
Key Buyer Consideration |
|
Total Nitrogen (N) |
Confirmed via AOAC / ISO standard testing methods |
Verify guaranteed minimum urea nitrogen content |
|
Nitrification Inhibitor |
Active ingredient (e.g., DMPP, DCD) & concentration (mg/kg) |
Avoid products without specified inhibitor identity and analytical validation |
|
Release Profile |
Cumulative release curve under defined conditions (25°C in water/soil) |
Stated duration (e.g., 60 vs. 90 days) requires specific sampling temperature data |
|
Particle Size (PSD) |
SGN (Size Guide Number) & UI (Uniformity Index) |
Vital for mechanical field application and dry-blending compatibility |
|
Physical Strength |
Crushing strength (kg/granule), attrition resistance, dust content |
High strength prevents coating breakdown during transport and bulk handling |
|
Chemical Quality |
Maximum moisture (%) and Biuret content (%) |
Low moisture prevents caking; low biuret prevents phytotoxicity in sensitive crops |
Product Selection & Comparison Matrix
|
Feature / Parameter |
Conventional Urea |
Standard Controlled-Release Urea |
Controlled-Release Urea + Nitrification Inhibitor |
|
Nitrogen Release Mechanism |
Rapid / Immediate |
Regulated physical diffusion |
Regulated physical diffusion |
|
Nitrification Control |
None |
None |
Active enzymatic/bacterial inhibition |
|
Leaching & Volatilization Loss |
High risk |
Medium-Low risk |
Minimal risk |
|
Application Frequency |
Multiple splits required |
Reduced application passes |
Optimized single or reduced application passes |
|
Procurement Documentation |
Standard COA |
COA + Release Curve |
COA + Release Profile + Active Inhibitor Assay |
Application Scenarios
Broad-Acre Field Crops: Maize, wheat, barley, canola, and sugarcane requiring extended nitrogen availability with reduced split-application passes.
Horticulture & Specialty Crops: High-value fruit trees, open-field vegetables, and protected nursery management.
Turf & Landscape: Professional sports turf, golf courses, and commercial landscaping requiring steady color and uniform growth.
Manufacturing Quality Control & Batch Traceability
Raw Material Inspection: Analytical verification of technical-grade urea and active inhibitor purities prior to production.
Dosing Precision: Automated liquid/dry dosing systems ensuring exact inhibitor concentration per metric ton.
Coating Uniformity: Continuous temperature- and spray-controlled application ensuring unbroken surface coverage.
Full Batch Traceability: Every shipped lot is fully traceable back to raw material inputs, processing parameters, and final laboratory Certificate of Analysis (COA) records.
Regulatory & Destination Market Compliance
European Union (EU): Fully aligned with EU Regulation 2019/1009 requirements for EU Fertilising Products, including Component Material Categories (CMC) and Product Function Categories (PFC) documentation.
Global Registrations: REACH-compliant documentation, SDS (Safety Data Sheets) according to GHS standards, and destination-specific heavy metal analysis reports available upon request.
Packaging & Bulk Logistics
|
Logistics Parameter |
Specifications |
|
Standard Packaging |
25 kg PE/PP woven bags, 500 kg jumbo bags, 1,000 kg jumbo bags with moisture-proof PE liners |
|
Bulk Supply |
Bulk vessel loading / containerized flexitank options |
|
Customization |
Private-label printing, multi-language hazard labeling, and custom bag specifications |
|
Storage Conditions |
Store in cool, dry, well-ventilated warehouses. Avoid high-stack compression and humidity |
Before Requesting a Quotation
To receive an exact technical match and commercial proposal, please include the following in your inquiry:
Target Total Nitrogen (%) & preferred Nitrification Inhibitor type/concentration.
Desired Release Duration (e.g., 60, 90, or 120 days at 25°C).
Preferred Granule Size (SGN / Particle size range).
Order Quantity (Trial sample size vs. Full Container Load / Bulk tonnage).
Destination Port & Specific Country Import Compliance Requirements.
FAQ
Q: How does Controlled-Release Urea with Nitrification Inhibitor differ from polymer-coated urea?
A: Polymer-coated urea (PCU) relies solely on a physical barrier to regulate water penetration and nitrogen diffusion.
Q: What parameters are required to accurately evaluate the nitrogen release profile?
A: A release statement (such as "90 days") is only meaningful when accompanied by specific laboratory test conditions. Always request the test methodology, the medium used (water or soil), the test temperature (standardized at 25°C), and a cumulative release curve showing the percentage of nitrogen released at defined intervals.
Q: Can this fertilizer be used in dry-blending formulations with other nutrients?
A: Yes, provided the physical properties align. For blending compatibility, check the Size Guide Number (SGN), Uniformity Index (UI), bulk density, and crushing strength to ensure the granules will not segregate, crumble, or react with other blend components during transit and spreading.
Q: What documentation is provided for regulatory approval in export markets?
A: For commercial shipments, we provide a complete technical dossier including the Technical Data Sheet (TDS), Certificate of Analysis (COA) per batch, GHS-compliant Safety Data Sheet (SDS), active inhibitor assay reports, particle size distribution analysis, and regulatory conformity statements (such as EU 2019/1009 compliance where applicable).
Q: How does temperature affect the release rate and inhibitor stability?
A: Both physical release through the coating and biological inhibition activity accelerate at higher soil temperatures, matching the naturally increased nutrient uptake rates of growing crops.
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