Urea Fertilizer 46-0-0

Regular Price: $ 18.99

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Regular Price: $ 18.99

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Urea Fertilizer 46-0-0

The most concentrated solid nitrogen fertilizer available, delivering 46% pure nitrogen for explosive vegetative growth and deep green color. This fast-acting, professional-grade formula is perfect for lawns, field crops, vegetables, and orchards. Manufactured in the USA with low biuret content (<1%) for safe soil application.

🇺🇸Made in USA

💪46% Nitrogen

✓Low Biuret <1%

🛡️90-Day Guarantee

Nitrogen Uptake Timeline

Day 1 💧 Dissolves in soil

Days 2-4 🔬 Converts to ammonium

Days 5-7 🌱 Green-up begins

Week 2+ 🌿 Full growth response

Perfect For These Applications

🌾

Lawns & Turf

1 lb / 1,000 sq ft

🌽

Field Crops

200-400 lbs / acre

🥬

Vegetables

1-3 lbs / 1,000 sq ft

🌳

Fruit Trees

0.2-6.5 lbs / tree

💪 46% Nitrogen Power

Highest nitrogen content available — less product needed per application.

⚡ Fast-Acting Formula

Converts to plant-available nitrogen within 2-4 days.

🎯 Versatile Soil Application

Broadcasting, side dressing, fertigation, or soil incorporation.

Quick Application Guide

Select an application type above

🔬 The Science of Urea — Why Proper Application Matters

Understanding how urea works helps you get maximum results and avoid common mistakes that waste fertilizer.

The Nitrogen Conversion Process

Urea doesn't feed plants directly — it must convert through a natural process:

💡 Did you know? Some plants prefer nitrogen in the ammonium (NH₄⁺) form — including rice, blueberries, and azaleas — while most vegetables prefer nitrate (NO₃⁻). Urea provides both forms over time, making it versatile for diverse plantings!

Key Insight: The 2-4 day delay before visible results is normal — that's the conversion process at work!

⚠️ Volatilization: Why You Must Water In

Urea left on the soil surface can lose up to 40% of its nitrogen to the atmosphere as ammonia gas.

❌

Surface Application (No Water)

NH₃ gas escapes to atmosphere
Up to 40% nitrogen lost
Worse on hot, windy days
Worse on high pH soils (>7.5)

✓

Incorporated (Watered In)

Urea moves into soil
95%+ nitrogen delivered
Apply 0.5" water within 24-48 hrs
Or incorporate mechanically

💡 Pro-Tip — Long-Term Soil pH: Urea is an acid-forming fertilizer. Frequent use may lower soil pH over time. We recommend a soil test every 2-3 years and balancing with agricultural lime to maintain pH 6.0–7.0 for most crops.

⚠️ Safety & Application Guidelines

🚫 NOT FOR FOLIAR USE: This product contains biuret (<1%) which causes leaf burn when applied as a foliar spray. Use ONLY as a soil application. For foliar nitrogen, use a specialty low-biuret urea (<0.25%).

Important Application Guidelines

Soil application only — Do not use as foliar spray (biuret causes leaf damage)
Incorporate within 24-48 hours — Water in with 0.5" irrigation or till into soil
Optimal soil temperature: 50-85°F — Below 50°F conversion is slow; above 85°F volatilization increases
Keep 2" away from seeds/transplants — High salt index can burn tender roots
Never apply to drought-stressed lawns — Salt can dehydrate grass, causing "brown-out"
Avoid frozen or very cold soil — Nitrogen sits idle and is prone to runoff
Store in cool, dry place — Moisture causes caking

Features & Quality Guarantee

Maximum Nitrogen Content: 46% nitrogen — highest concentration in dry fertilizers
Low Biuret Content: Less than 1% biuret — safe for soil application on all crops
Fast-Acting Formula: Converts to plant-available forms within 2-4 days
Versatile Soil Application: Broadcasting, side dressing, fertigation, incorporation
Wide Crop Compatibility: Cereals, vegetables, fruits, lawns, ornamentals
Uniform Granular Form: Even distribution and consistent nutrient delivery
Cost-Effective: High nitrogen content = less product per application
Professional Grade: Manufactured to highest industry standards

⚠️ Not Recommended for Foliar Application: Standard agricultural urea contains biuret (a manufacturing byproduct) that can cause leaf burn and phytotoxicity when applied to foliage. For foliar feeding, use a low-biuret urea specifically labeled for foliar use (<0.25% biuret).

Derived From

Synthetic Urea (CO(NH₂)₂) — High-purity prilled urea manufactured through the reaction of ammonia and carbon dioxide.

Guaranteed Analysis

Total Nitrogen (N)	46%
Biuret Content	<1.0%
Moisture	<0.5%

Application Rates & Timing

Incorporate urea into soil within 24-48 hours or apply before irrigation/rainfall.

🌾 Lawn Application

Urea rates for lawns and turf
Grass Type	Rate	Annual Total	Frequency
Cool Season	1 lb/1000 sq ft	2-4 lbs N/1000 sq ft	3-4 applications
Warm Season	0.5-1 lb/1000 sq ft	2-3 lbs N/1000 sq ft	2-3 applications

⚠️ Never apply to drought-stressed turf — high salt index can cause "brown-out"

🌱 Field Crops

Urea rates for field crops
Crop	N Needed	Urea Rate	Timing
Corn	120-180 lbs N/acre	260-390 lbs/acre	Pre-plant + side dress
Wheat	60-120 lbs N/acre	130-260 lbs/acre	Fall + spring split
Cotton	60-100 lbs N/acre	130-220 lbs/acre	Pre-plant + side dress

🥬 Vegetables

Urea rates for vegetables
Type	Rate/1000 sq ft	Per Plant	Method
Leafy Greens	1-2 lbs	1 tsp	Side dress 2 weeks after planting
Tomatoes/Peppers	2-3 lbs	1 tbsp	At planting + when fruiting
Sweet Corn	3-4 lbs	2 tbsp	At knee-high stage

🌳 Fruit Trees

Urea rates for fruit trees
Tree Age	N per Tree	Urea per Tree	Timing
Young (1-3 yrs)	0.1-0.3 lbs	0.2-0.65 lbs	Split spring/summer
Mature (4+ yrs)	1-3 lbs	2.2-6.5 lbs	Early spring
Citrus	1-1.5 lbs/year age	2.2-3.3 lbs/year	3-4 split applications

Urea Calculator

Documents & Certifications

📄 Safety Data Sheet (SDS)
📋 Product Label / Spec Sheet (Coming Soon)

Frequently Asked Questions

What is urea and how does it work?

Urea (46-0-0) is the most concentrated solid nitrogen fertilizer, containing 46% nitrogen. When applied to soil, the enzyme urease converts it to ammonium and then nitrate — forms plants can absorb. This takes 2-4 days under optimal conditions (50-85°F soil temperature, adequate moisture).

How do I prevent nitrogen loss?

Incorporate quickly: Water in or till within 24-48 hours
Apply before rain: 0.5 inches moves urea into soil
Avoid hot/windy days: Volatilization increases above 85°F
Consider urease inhibitors: Reduce losses by 40-50%
Split applications: Multiple smaller doses are more efficient

When is the best time to apply?

Cool-season grasses: Early spring (soil 55°F+) and fall
Warm-season grasses: Late spring through summer
Vegetables: At planting and during rapid growth
Trees: Early spring before bud break

Temperature matters: Below 50°F conversion is very slow. Above 85°F volatilization accelerates. The sweet spot is 50-85°F soil temperature.

Can urea burn plants?

Yes, if misapplied. Urea has a high salt index. Prevention:

Never exceed recommended rates
Keep 2" away from seeds and transplants
Water immediately after application
Never apply to drought-stressed plants
Split large applications into 2-3 smaller ones

Does urea affect soil pH over time?

Yes. Urea is acid-forming. While initial conversion temporarily raises pH, the subsequent nitrification process lowers it over time.

Recommendation: Test soil every 2-3 years. Balance with agricultural lime to maintain pH 6.0-7.0 for most crops.

Is urea organic?

No. Synthetic urea is not approved for organic production. Organic alternatives include blood meal (12-0-0), feather meal (12-0-0), fish emulsion (5-1-1), composted manure, and alfalfa meal (2.5-0.5-2.5).

Can I use this urea for foliar feeding?

No — this product is not recommended for foliar application.

Standard agricultural urea contains biuret — a byproduct of the manufacturing process. Our urea contains less than 1% biuret, which is normal for agricultural-grade urea and perfectly safe for soil application.

However, when applied to foliage, biuret causes leaf burn and phytotoxicity, especially on sensitive crops like citrus, pineapple, and ornamentals.

For foliar nitrogen: Use a specialty "low-biuret urea" with less than 0.25% biuret content, specifically labeled for foliar use.

Why is my urea clumping or turning into a brick?

Urea is hygroscopic — it actively pulls moisture from the air, causing granules to fuse together.

The fix: Place the bag inside a heavy-duty bag and drop it on a hard surface, or use a rubber mallet. The granules will break apart.

Good news: Clumping does NOT change the nutrient value — only the ease of spreading.

Prevention: Store in a cool, dry location in sealed containers. Keep bags off concrete floors.

Can I mix urea with other fertilizers?

Some mixtures work, others cause problems:

✅ Safe to mix: Potassium Sulfate (0-0-53), MKP (0-52-34), Potassium Chloride
🚫 Avoid: Superphosphate (releases moisture, turns soupy), Ammonium Nitrate (extreme clumping), Calcium Nitrate (forms precipitate)

Important: Never mix urea with superphosphate — the chemical reaction creates an unusable mess in your spreader.

Is urea safe for pets and children?

Once properly watered in, treated areas are generally safe.

During application: Keep pets and children away
After watering (0.5" water): Once granules dissolve and lawn dries, safe to return
Storage: Keep bags secured away from children and pets

Concentrated nitrogen salts can be harmful if ingested directly. If accidental ingestion occurs, contact Poison Control: 1-800-222-1222.

View All Urea FAQs →

Pairs Well With

K Source

🧪

Potassium Sulfate 0-0-53

Complete NPK when combined

P+K Source

🌸

MKP 0-52-34

Bloom & root development

Mg Source