Case Background: Growing Demand for High-Quality Water-Soluble Fertilizers in Vietnam’s Greenhouse Agriculture

The Central Highlands of Vietnam (Gia Lai & Lam Dong) represent one of the nation’s largest greenhouse vegetable production zones.

However, many local tomato growers face the following challenges:

• Severe fruit deformation and cracking (due to calcium deficiency)
• Frequent clogging of greenhouse drip irrigation systems caused by residues and insoluble particles
• Unstable quality of imported fertilizers, with recurring issues of moisture absorption and caking
• Inconsistent crop quality negatively impacting wholesale prices

In 2024, a leading Vietnamese greenhouse operator partnered with Hansol Chemical to seek a cleaner, residue-free nutritional solution compatible with drip irrigation systems.

Solution: Full-Season Tomato Nutrition Program Featuring High-Purity Calcium Nitrate (CN) + Chloride-Free NPK

Hansol Chemical provided the client with a customized fertigation program, including:

1. High-Purity Calcium Nitrate (CN)

• CaO ≥ 26%
• 100% nitrate nitrogen as the nitrogen source
• Chloride-free (0% Cl⁻)
• Fully water-soluble with zero residue

Used to prevent:

✔ Blossom end rot in tomatoes

✔ Fruit cracking

✔ Leaf curling caused by calcium deficiency

2. Magnesium Nitrate (MN)

• Enhances photosynthesis and chlorophyll stability
• Improves overall plant vigor and flowering quality

3. Chloride-Free Water-Soluble NPK (WSF NPK)

Formulations include:

• 13-40-13 (fruit setting stage)
• 20-20-20 (vegetative growth stage)
• 15-5-30 (fruit enlargement stage)

Ensuring precise nutrient delivery to tomato crops at every growth stage.

4. Drip Irrigation Compatibility Assessment (Anti-Clogging Test)

Hansol’s technical team conducted on-site evaluations of the irrigation system to ensure:

✔ No precipitation occurs

✔ No emitter clogging

✔ 100% water solubility

Implementation Results: Significant Improvements in Yield, Quality, and System Reliability

Four months after implementation, the client achieved the following quantifiable outcomes:

① 22% Yield Increase (Compared to Previous Season)

• Higher fruit count per plant
• More uniform fruit size
• Reduced incidence of fruit shape defects

② 18% Increase in Marketable Fruit Ratio

Improved fruit firmness and post-harvest durability raised the proportion of Grade-A marketable fruit from:
52% → 70%

③ Drip Irrigation Clogging Rate Reduced to 0%

Throughout the entire 108-day growing season:

• No single clogging incident occurred
• No filter screen deposits were observed
• No nutrient precipitation was detected

Client testimonial:

“Hansol’s CN and NPK formulations are the first we’ve ever used that delivered a truly clog-free season from start to finish.”

④ Enhanced Crop Health (More Uniform Leaf Color)

The combination of calcium nitrate and magnesium nitrate boosted overall plant vitality:

• Consistently deep green foliage
• Higher-quality flowering
• Improved fruit set on secondary inflorescences

⑤ Improved Packaging and Storage Stability

Hansol’s multi-layer moisture-shield packaging resolved:

• Fertilizer caking caused by tropical humidity
• Moisture absorption during storage in mixing rooms
• Shortened shelf life

This represents a critical advantage in Vietnam’s tropical climate.

Client Feedback

“The main reason we chose Hansol Chemical is that their CN and NPK never leave residues or cause blockages. The resulting improvements in yield and quality exceeded our expectations.” — Greenhouse Manager, Vietnam (2024)

Why Is Hansol Chemical Gaining Increasing Trust Across Southeast Asia?

Hansol’s competitive edge stems from:

✔ High Purity

Low impurities, minimal heavy metals, and complete solubility.

✔ Chloride-Free Formulations

Ideal for tomatoes, strawberries, leafy greens, and other high-value crops.

✔ Complete Regulatory Documentation

Full compliance documentation including COA, MSDS, SGS reports, and UN-certified packaging.

✔ Advanced Packaging for Hot & Humid Climates

Optimized for tropical transport and storage conditions in Southeast and South Asia.

✔ Technical Team Support for Customized Nutrition Programs

We don’t just sell products—we deliver comprehensive agronomic support.