Urea Formaldehyde (Slow-Release)

Methylene urea slow-release nitrogen fertilizer providing controlled nitrogen availability over 8-16 weeks. The condensation polymer of urea and formaldehyde releases nitrogen through microbial decomposition, matching crop uptake patterns and reducing leaching losses by up to 40%. Ideal for turfgrass, ornamentals, and high-value horticultural crops where sustained feeding is critical.

Ships within 3-5 business days

Sample available

ISO 9001 certified quality

24h customer support

Specifications

Total Nitrogen38%

Slow-Release N≥60%

FormGranular

Release Period8-16 weeks

Packaging25kg bags

Categories: Industrial & Technical Grade Chemicals, Urea Products

Description
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ISO 9001:2015

REACH Compliant

EU Fertilizer Reg.

GMP Certified

Product Overview

Urea Formaldehyde (UF) Slow-Release Nitrogen Fertilizer is a controlled-release nitrogen source that delivers consistent feeding over 8-16 weeks through microbial decomposition of methylene urea polymers. Unlike conventional urea which can lose 20-40% of nitrogen through volatilization and leaching, UF fertilizers release nitrogen in synchrony with plant demand, achieving nitrogen use efficiencies of 60-80% compared to 30-50% for conventional sources. Ideal for turfgrass management, ornamental production, and any application where sustained nitrogen feeding without repeated applications is valued.

How Urea Formaldehyde (Slow-Release) Works

Urea formaldehyde is a condensation polymer of urea and formaldehyde, forming methylene urea chains of varying length. Shorter chains (methylene diurea, dimethylene triurea) dissolve more readily and provide early nitrogen. Longer chains require microbial breakdown by soil bacteria and fungi, releasing nitrogen gradually over weeks to months. The ratio of cold-water soluble to cold-water insoluble nitrogen determines the release profile — our product is optimized for 60%+ slow-release fraction.

Key Benefits

8-16 week controlled nitrogen release matching plant uptake

60-80% nitrogen use efficiency vs 30-50% for conventional urea

Reduces leaching losses and groundwater nitrate contamination

Minimal burn risk even at high application rates

No surge growth — reduces mowing frequency on turf

38% total nitrogen content in granular form

Compatible with standard spreading equipment

Ideal for environmental sensitive areas near waterways

Application Guide

Turfgrass: apply 200-400 kg/ha per application, 2-3 times per growing season. Ornamental nursery: incorporate 300-500 kg/ha into potting substrate or field soil before planting. Sports turf: apply 150-250 kg/ha monthly during active growth for consistent color and density without surge growth. Golf greens: apply at 100-150 kg/ha every 6-8 weeks. Can be blended with quick-release N sources for immediate + sustained feeding.

Ideal For

Golf coursesSports turfOrnamental nurseriesLandscape maintenanceContainer productionEnvironmentally sensitive sitesLow-maintenance landscapesGreenhouse crops

Storage & Handling

Store in dry conditions away from moisture. Granular form has excellent storage stability and low caking tendency. Shelf life: 36 months in sealed packaging. No special handling beyond standard fertilizer PPE requirements.