NPK 15-5-10 Water Soluble Fertilizer 6% Nitrate-Nitrogen No3-N Compound Fertilizer for Economical Crops

• Customization: Available
• Application: Vegetables, Flowers, Fruit, Rice, Wheat, Corn Ect.
• Appearance: Granular
• Model NO.: Golden Cloak
• Infection on Soil: Eco-Restorative & pH Neutral
• Chemical Character: Chemical Neutral
• Release Type: Quick
• Manufacturing Method: Organic Inorganic Compound Fertilizer
• Type: Potassium Fulvic Acid Fertilizer
• NPK: 15-5-10
• Organic Matter: 20%
• Fulvic Acid: 18%
• Nitrate-Nitrogen(No3-N): 6%
• Water Solubility: 100%
• pH: 5.5~7.2
• Transport Package: Woven Bags or Neutral Kraft Bags Available
• Specification: 40kg or Customizable
• Trademark: HAOSHENGBAO
• Origin: Liuzhou, Guangxi, China
• HS Code: 310590

Product Description

Product Information

The potassium fulvic acid fertilizer is an advanced fertilizer combining the strengths of organic and inorganic nutrients. With 30% total nutrients (N-P-K = 15-5-10), including 6% nitrate nitrogen, and 20% organic matter, this fertilizer delivers both immediate nutrient supply and long-term soil health benefits. Enriched with 18% fulvic acid, mannan oligosaccharides and β-glucan 3%, it excels in enhancing soil microbial activity, root development, and crop quality. 

Application Methods: drip irrigation, broadcasting, trenching, and mechanized application

Product Name	Potassium Fulvic Acid Fertilizer
Type	Organic-Inorganic Compound Fertilizer
N-P-K Formula	15-5-10
Organic Matter	20%
Nitrate-Nitrogen(NO3-N)	6%
Other Ingredients	Fulvic Acid, Mannan Oligosaccharide, β-Glucan
Water solubility	100%
Duration of Effect	≥ 8 months
Suitable Crops	Fruit Trees, Maize, Sugarcane, Mulberry, Grapevine, Passion Fruit, Cotton, Melons & Gourds, Tuber Crops, Legumes, Medicinal Herbs, Leafy Vegetables ect.

Key Features & Benefits

Controlled Release & Long Lasting — Fertilizer effect lasts 8 months or more, reducing reapplication frequency and labor.

Organic Matter Boost (20%) — Improves soil structure, water holding capacity, and soil biology.
Superior to High-Content Water-Soluble Fertilizers — At same usage, outperforms many 50% content fertilizers in efficacy.
Enhances Crop Quality & Yield — Increased sugar content, improved color, better storage & shelf life; especially beneficial for fruit, leafy vegetables, medicinal herbs, etc.
Soil Restoration — Breaks up compaction, ameliorates acid, salt, or alkali stress; helps poor or sandy soils recover.

Fully Water-Soluble & Drip-Irrigable — Compatible with modern irrigation systems; especially suitable in arid or drought-prone areas to maximize water use.

Potassium Fulvic Acid Controlled/Slow-Release Standard Granules

Exclusive Innovation

 

√ Anti-Caking – Stable physical structure resists moisture absorption.
√ Dust-Free – Reduce airborne loss and improve operator safety.
√ Precision Application – Uniform granule size ensures application rate.
√ Longer Shelf Life – Longer storage time than powder.

 
 

Usage & Application

Crop Type	Base Fertilizer Rate (kg/acre)	Base Application Method	Top-Dressing Rate (kg/acre)	Top-Dressing Application Method
Leafy Vegetables	20-25	Broadcasting	20-25	Broadcasting
Melons & Gourds	50	Banding	50-75	Broadcasting
Fruit Trees	100	Banding	200-250	Broadcasting
Corn	25	Banding	15	Broadcasting
Rice	25	Broadcasting	15	Broadcasting
Wheat	25	Broadcasting	15	Broadcasting
Peanuts	30	Banding	10	Broadcasting
Potatoes (Tubers)	25-50	Banding	25	Broadcasting
Cotton	-	-	50	Broadcasting

NOTE: These rates are for reference. For the best results, adjust according to local soil fertility, crop growth stage, climate, and moisture conditions. 

If you have any questions or concerns about the usage, rates, or suitability for your crops, we are always ready to provide remote support and expert guidance. Let us be your partner in building sustainable, green agriculture together — we're committed to your success.

Company Profile

The Innovative Fertilizer Factory

Guangxi Haoshengbao Fertilizer Technology Co., Ltd. is a professional fertilizer manufacturer located in Laibin City, Guangxi, China.
We specialize in the research, development, and production of biochemical fulvic acid fertilizers and innovative soil-improvement solutions.
With advanced production technology and stable raw material resources, we have become one of the leading manufacturers of fulvic acid standard granules and corn bran puffed water-retaining granules in China.
Our products are designed to improve soil health, enhance nutrient efficiency, and support sustainable crop production for modern agriculture.
Through continuous innovation in plant nutrition technology, we provide reliable fertilizer solutions that help growers achieve higher yields, stronger crop resilience, and healthier soils.

FAQ

Q: What's your MOQ?
A: The MOQ is 1*20GP container, it's about 15-20 tons.
 
Q:Do you accept sample order?
A:Yes, We accept sample order from 50g to 1 kg, ship via DHL express. The express fee is on consignee.

Q:What is the payment method?
A: We accept 100% T/T before shipment. Paypal, credit card and L/C are not available at the moment.  
 
Q:How long is your lead time?
Sample order: 3-5days. 
Bulky order: Around 20-45 days. 
We will update you lead time before start production.
 
Q:Can you provide customized package?
A:Yes, if you have your own design of package, we'd love to help you apply it to the final products. Please share the Print-ready files or Native design source files, we will communicate with the printing house.

 

Organic-Inorganic VS Inorganic,Which Compound Fertilizer Is Better?

Organic-Inorganic Compound Fertilizer: A fertilizer that combines inorganic nutrient sources (minerals or synthetic chemical nutrients) with organic matter (such as fulvic acid, molasses, biological or plant/animal derived matter). This type of fertilizer delivers both rapid-available nutrients and slower-release, soil-improving components, enhancing soil structure, microbial activity, and overall nutrient use efficiency.

Inorganic Fertilizer: Fertilizer derived from mineral or synthetic sources, where nutrients (such as nitrogen, phosphorus, potassium) are present in mineral/chemical forms that are immediately available for plant uptake. These fertilizers are often called "synthetic" or "mineral" fertilizers. 

Key Differences & Data-Backed Advantages

Above-Ground Biomass Increase: In a global meta-analysis, inorganic fertilization increased above-ground biomass by ≈ 42%, while organic fertilization increased it by ≈ 56%. 
Soil Organic Carbon (SOC): Inorganic fertilizers yield only modest SOC gains (~2%), whereas organic fertilization boosts SOC by ~19% relative to untreated soil and ~15% over inorganic treatments. 
Plant Diversity: Inorganic fertilization is linked to a decline in species richness (approx. -18%) in grasslands. In contrast, organic fertilization maintains or increases species richness and evenness.
Nutrient Use Efficiency & Loss Reduction: Pure inorganic fertilizers may suffer greater leaching, runoff, or volatilization. Organic-inorganic compounds help improve nutrient uptake efficiency and reduce such losses, especially in weak or degraded soils.
Soil Health & Microbial Activity: Inorganic-only regimes often fail to sustain microbial biomass, enzyme activities, or soil structure. Organic-inorganic fertilizers enhance aggregate stability, microbial biomass, and activities of key soil enzymes (e.g. urease, β-glucosidase), leading to better root growth, water retention, and resilience.

 What This Means for You
If you want fast initial growth, inorganic fertilizers give quick results. But their effects taper off, and soil health often suffers if used exclusively.
If you want higher yield over a season or multiple seasons + improved fruit/vegetable quality, sugar content, soil structure, drought resistance, then mixed organic-inorganic fertilizers are often superior.
The organic-inorganic compound fertilizers deliver both rapid nutrient supply (from inorganic part) and long-term benefits (from organic content): slower release, better soil moisture retention, more stable structure, richer microbial life.
 
Organic-inorganic compound fertilizers are generally "better" than pure inorganic ones when you consider longevity, soil health, nutrient efficiency, and sustainability. They may cost a bit more or require more planning, but the return in crop yield, quality, and soil resilience tends to outweigh those extra inputs.