T: +86-400-0987187
E: info@sdjinmai.com
E: info@sdjinmai.com
No. 6888 Jiankang East Street, High-tech Zone, Weifang, Shandong, China
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JINMAI-Defender® High Potassium Phosphite Fertilizer is designed to rapidly supply phosphite phosphorus (P₂O₅) and potassium (K₂O) to crops.
The unique +3-valent phosphorus form is absorbed faster than traditional +5-valent phosphorus, ensuring quick nutrient uptake through both xylem and phloem. It stimulates root development, improves nutrient mobility, strengthens disease resistance, enhances fruit coloration, and extends post-harvest shelf life.
Its systemic properties and strong permeability make it an ideal solution for both nutritional supplementation and disease prevention, particularly against fungal pathogens.
| Formula | P2O5 (+3 valence) 520g/L, K2O 340g/L, Zn 1g/L, B 1g/L |
| Appearance | Blue Liquid |
Release Type | Quick |
Model Number | 200ml/1L |
Density | 1.45 g/ml |
pH (1:250) | 6.5±0.5 |
Characteristic | 100% Water Soluble |
Function | Root Growth, Disease Resistance, and Quality Improvement |
Application | Fruit Trees, Vegetables, Field Crops, Berries & Specialty Crops |
| Origin | Shandong, China |
| OEM&ODM | Logo, Label, Formula, Package Customized |
JINMAI-Defender® enhances root growth, improving nutrient and water uptake, which supports vigorous plant development from early stages.
The fertilizer stimulates flowering and fruit formation, leading to higher fruit set rates and improved crop yields.
By promoting nutrient mobility and cell wall strengthening, it enhances fruit coloration, firmness, and overall commercial value.
The +3-valent phosphorus stimulates production of disease-related proteins and lignin, thickening cell walls and activating plant immune responses to effectively prevent fungal diseases.
Improved nutrient supply and disease resistance help prolong the storage period, maintaining fruit freshness and reducing losses after harvest.
The combined effects of nutrient supplementation and immune activation lead to healthier crops with increased yield and superior quality.
 | Fruit Trees⦁ Suitable Crops: Apples, pears, citrus, peaches, cherries, mangoes, grapes ⦁ Function: 1. Boosts fruit coloration and sweetness 2. Reduces fruit drop and cracking 3. Extends storage life and marketability |
 | Vegetables⦁ Suitable Crops: Tomatoes, peppers, cucumbers, eggplants, leafy greens ⦁ Function: 1. Promotes early root growth for strong seedlings 2. Improves flowering and fruit set 3. Enhances disease resistance against downy mildew and blight |
 | Field Crops⦁ Suitable Crops: Maize, cotton, peanuts, sugarcane ⦁ Function: 1. Improves root architecture and nutrient uptake 2. Enhances tolerance to stress and diseases |
 | Berries & Specialty Crops⦁ Suitable Crops: Strawberries, blueberries, tea, coffee ⦁ Function: 1. Improves fruit firmness and post-harvest life 2. Strengthens plant immunity to fungal diseases |
Method | Phenological Period | Dosage | Frequency |
Drip Irrigation | Vegetative growth and fruiting periods | 1-2 L/ha | Every 10–15 days |
Foliar Spray | Pre-flowering, flowering, and fruit development stages | 0.5– 1 L/ha (Dilute 1000-1500 times) | Every 10–14 days (Use 2-3 times continuously) |
Note: The specific usage and dosage can be adjusted according to the differences in regions, crop types, yields, etc, under the advice of technical personnel.
Early Growth Stage: Stimulate root development and seedling establishment
Pre-Flowering: Enhance flower initiation and improve fruit set
Fruit Development Stage: Increase nutrient supply, improve fruit quality, and prevent diseases
Stress Periods: Apply before expected disease outbreaks or adverse weather to boost resistance
1. Mixing Order: When combining with other products, follow this sequence: water → this product → other products.
2. Compatibility: Compatible with most pesticides. Always conduct a compatibility test before first use.
3. Storage: Store in a cool, well-ventilated place, away from direct sunlight.
4. Safety: Keep out of reach of children; Not for human or animal consumption; In case of eye contact, rinse thoroughly with water and seek medical attention immediately.
High Potassium Phosphite Fertilizer is a liquid fertilizer containing highly available potassium and phosphite phosphorus (P₂O₅ +3 valence). It helps improve nutrient mobility, promote root development, enhance plant defense, and support fruit quality improvement.
Potassium phosphite fertilizer improves nutrient transportation within plants, stimulates root growth, enhances plant stress tolerance, and supports better fruit coloring, quality, and shelf life.
Phosphate fertilizers mainly provide phosphorus nutrition, while phosphite fertilizers contain phosphite phosphorus, which is highly mobile within plants and can help activate plant defense responses and improve stress resistance.
Potassium phosphite can stimulate natural plant defense mechanisms, strengthen plant immunity, and help crops better tolerate environmental stresses and pathogen pressure.
High Potassium Phosphite Fertilizer can be applied to a wide range of crops, including fruit trees, vegetables, field crops, and cash crops, especially during root development, flowering, fruit expansion, and fruit coloring stages.
It is recommended to apply potassium phosphite fertilizer during key growth stages such as early root development, flowering, fruit setting, fruit enlargement, and pre-harvest periods to improve crop growth and fruit quality.
Yes. The high potassium content promotes sugar accumulation and fruit coloring, while phosphite supports plant vitality and stress tolerance, helping improve fruit quality and storage performance.
Yes. High Potassium Phosphite Fertilizer is suitable for fertigation systems, including drip irrigation and other efficient irrigation methods, allowing nutrients to be delivered directly to the root zone.
Potassium phosphite fertilizer is compatible with many agricultural inputs. A compatibility test is recommended before mixing with calcium products, strong alkaline materials, or other concentrated fertilizers.
Application rates depend on crop type, growth stage, and cultivation conditions. For optimal results, follow the recommended dosage provided by the manufacturer or consult local agricultural professionals.
No. Potassium phosphite and potassium phosphate are different compounds. Potassium phosphite contains phosphite phosphorus (+3 valence), while potassium phosphate contains phosphate phosphorus (+5 valence). Potassium phosphite is widely used as a plant nutrition enhancer and biostimulant fertilizer.
