Potassium Phosphite Solution
Potassium Phosphite Solution: Our Product Information
Risso® Potassium Phosphite Solution (0-35-55) is a high-purity, fully water-soluble PK liquid fertilizer supplying readily available phosphite phosphorus (P³⁺) and potassium (K). It ensures fast absorption, efficient nutrient utilization, and stable crop performance. With no export restrictions, it is ideal for global agricultural supply.
- ✅ Rapid Uptake & Enhanced Plant Resistance
Supports quick absorption through leaves and roots, improves nutrient use efficiency (NUE), and enhances plant tolerance to stress and disease. - ✅ Concentrated Liquid for Precision Application
High-content liquid formulation (P₂O₅ 500–525 g/L, K₂O 270–340 g/L), optimized for fertigation and foliar use, ensuring easy application and consistent results.
Product Overview
Potassium Phosphite Liquid (K₂HPO₃) is a high-purity liquid phosphorus–potassium fertilizer formulated for rapid plant uptake and advanced crop nutrition. As a fully water-soluble liquid, it is specifically designed for fertigation systems, foliar application, and precision agriculture, ensuring uniform distribution and immediate availability of nutrients.
Unlike conventional phosphate fertilizers, potassium phosphite contains phosphorus in the phosphite form (P³⁺), enabling faster absorption, superior mobility, and enhanced physiological activity within plants.
Product Specifications
| Nutrient | Content |
|---|---|
| Nitrogen (N) | 0% |
| Phosphorus (P₂O₅) | 34% – 39% |
| Potassium (K₂O) | 52% – 58% |
Core Technical Advantages
1. Liquid Formulation for Maximum Efficiency
- Ready-to-use liquid fertilizer for easy handling and application
- Ideal for drip irrigation, sprinkler systems, and foliar spraying
- Ensures uniform nutrient distribution and precise dosage control
2. Advanced Phosphite Technology (P³⁺)
- Faster plant absorption compared to phosphate (P⁵⁺)
- Low soil fixation, high internal mobility
- Immediate nutrient availability during critical growth stages
3. Systemic Translocation
- Moves through both xylem and phloem
- Provides full-plant nutrient coverage
- Effective under diverse environmental conditions
4. Dual Function: Nutrition + Plant Defense Activation
- Supplies essential phosphorus (P) and potassium (K)
- Functions as a plant resistance inducer (PRI)
- Helps reduce incidence of:
- Downy mildew
- Phytophthora
- Root rot and other soil-borne diseases
5. Enhances Crop Yield & Quality
- Promotes root growth and nutrient uptake
- Improves flowering, fruit set, and crop uniformity
- Enhances fruit size, color, sugar content, and shelf life
Application & Usage
Foliar Application
- Dilution: 1:800 – 1:1500
- Interval: 7–14 days
Fertigation / Drip Irrigation
- Application Rate: 5 – 10 L/ha
Soil Application
- Suitable for root stimulation and disease suppression
Applicable Crops
- Fruits: Citrus, grapes, apples, berries
- Vegetables: Tomato, cucumber, pepper, leafy greens
- Field Crops: Corn, wheat, rice
- Cash Crops: Coffee, cocoa, cotton
- Horticulture & Turf

Foliar Application

Root Development & Soil Health

Fertigation Drip Irrigation

Sprinkler Irrigation
🌍 Export & Regulatory Advantages
✅ No Export Restrictions
- Not included in restricted phosphate fertilizer categories
- Unaffected by seasonal phosphatic fertilizer export controls
- Ideal for global distributors and long-term supply contracts
✅ Flexible HS Classification
- Industrial Use: HS Code 2835100000 (Phosphites)
- Fertilizer Use: HS Code 3105600000 (PK Fertilizer)
📦 Packaging & Storage
- Packaging: 20L / 200L / IBC / OEM
- Storage: Cool, dry, well-ventilated environment
- Shelf Life: 24 months

Frequently Asked Questions
A highly soluble liquid fertilizer with phosphite phosphorus (P³⁺) and potassium (K). Unlike traditional phosphate fertilizers, it is quickly absorbed, transported within the plant, and highly efficient.
Supports root growth, flowering, and fruit development. Enhances nutrient uptake and improves crop yield and quality. Strengthens resistance against pathogens like Phytophthora, Pythium, and downy mildew.
Activates systemic acquired resistance (SAR) in plants, enhancing natural defenses. Provides dual benefits: nutrition and disease protection.
- Foliar spray: Early growth, flowering, or high disease risk.
- Drip/fertigation: Precise nutrient delivery via irrigation.
- Soil application: Stimulates roots and reduces soil-borne diseases.
Follow label dilution rates and adjust by crop and environment.
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IBC Potassium Phosphite

200L Potassium Phosphite

20L Potassium Phosphite

5L Potassium Phosphite
Product Catalog
- Product InformationProduct Information
- Product SpecificationsProduct Specifications
- Core Technical AdvantagesCore Technical Advantages
- Application & UsageApplication & Usage
- Packaging & StoragePackaging & Storage
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Need a custom formula?
Contact our technical sales team for soil-specific recommendations and bulk pricing.
Why Choose Our Potassium Phosphite Solution?
- High-Purity & Stable – Fully water-soluble, consistent nutrient delivery.
- Fast Absorption – Systemic action for quick plant uptake.
- Dual Function – Provides nutrients and enhances plant disease resistance.
- Irrigation Compatible – Suitable for drip and sprinkler systems.
- Global Supply – No export restrictions, reliable delivery.
- OEM & Bulk Options – Supports private label and large-volume orders.


