Ultra-pure, rapid-dissolution fertilizers designed specifically to optimize hydroponics, drip lines, and micro-sprinkler systems.
In contemporary commercial horticulture and high-efficiency precision agriculture, micro-irrigation systems—specifically low-pressure surface and subsurface drip networks—have transitioned from simple water-saving alternatives to vital conduits for automated crop nutrition. At the core of this technological shift lies the critical demand for specialized mineral inputs that possess 100% water solubility, instantaneous dissolving velocity, and zero chemical precipitate formation. Fully Water Soluble Monopotassium Phosphate (MKP, KH₂PO₄, 0-52-34) stands out globally as the premier, highly concentrated source of orthophosphate phosphorus ($52\%\ \mathrm{P_2O_5}$) and soluble potassium ($34\%\ \mathrm{K_2O}$), free of nitrogen, chloride, sodium, and heavy metal contaminants.
The global precision fertigation sector is experiencing exponential growth driven by climate volatility, water scarcity, and strict environmental regulations on nutrient runoff. Commercial greenhouse operators, open-field berry farms, orchards, and high-value crop growers are rapidly phasing out traditional granular fertilizers in favor of continuous, low-concentration fertigation formulas. Fully water-soluble MKP has emerged as the global industry standard for vegetative-to-reproductive switching, flower induction, and fruit maturation stages. With the rise of IoT-driven fertigation dosing units, variable-rate nutrient injection relies heavily on predictable electrical conductivity (EC) profiles and clean solubility curves—qualities where crystal and spray-dried MKP outperform traditional alternatives like monoammonium phosphate (MAP) or potassium sulfate (SOP).
Total dissolution rate of 100% with no insoluble matter ($
Features an exceptionally low salt index (8.4) and low electrical conductivity, eliminating root osmotic shock and leaf scorching in saline or arid soils.
Natural buffering capacity stabilizes the irrigation water solution around pH 4.2–4.8, keeping secondary micronutrients (Fe, Zn, Mn, Cu) in bioavailable forms.
The foremost operational challenge in drip irrigation management is the physical, chemical, and biological clogging of drip emitters. Chemical clogging predominantly occurs when orthophosphate ions precipitate with hard water cations like calcium ($\mathrm{Ca^{2+}}$) and magnesium ($\mathrm{Mg^{2+}}$), forming insoluble dicalcium phosphate ($\mathrm{CaHPO_4}$) or tricalcium phosphate ($\mathrm{Ca_3(PO_4)_2}$).
Our ultra-pure MKP is formulated via high-grade thermal/purified phosphoric acid neutralization with high-purity potassium hydroxide. It provides an inherent acidic reaction in solution ($\mathrm{pH}\ 4.5 \pm 0.3$), preventing localized pH spikes that cause precipitation. When managed through smart dual-tank (Tank A: Calcium Nitrate; Tank B: MKP + Sulfates + Micronutrients) injection setups, fully soluble MKP eliminates pipeline sedimentation and extends the working lifespan of modern pressure-compensating drip tapes by up to 300%.
| Nutrient Property / Parameter | Standard Agricultural MKP | Luobu High-Purity Drip-Grade MKP | Agronomic Benefit in Drip Systems |
|---|---|---|---|
| Phosphorus Content ($\mathrm{P_2O_5}$) | 51.0% - 51.5% | ≥ 52.0% (High-Energy Ortho-P) | Stimulates rapid root elongation and ATP synthesis |
| Potassium Content ($\mathrm{K_2O}$) | 33.5% - 33.8% | ≥ 34.0% (Pure Potassium) | Regulates stomatal conductance and sugar transport |
| Water Insoluble Matter | ≤ 0.2% | ≤ 0.02% (Ultra Clean) | Zero nozzle/emitter clogging in 0.15–0.5 mm drip orifices |
| pH Value (1% aqueous solution) | 4.2 – 5.0 | 4.3 – 4.7 (Stable Acidic Buffer) | Optimizes nutrient rhizosphere pH and unblocks bicarbonate scaling |
| Chloride ($\mathrm{Cl^-}$) & Sodium ($\mathrm{Na^+}$) | ≤ 0.5% | ≤ 0.05% (Virtually Zero) | Safe for sensitive crops (berries, tobacco, avocado, stone fruits) |
Fully water-soluble MKP provides growers with precise, uncoupled nutrient control. Because it delivers zero nitrogen, agronomists can apply high dosages of phosphorus and potassium during reproductive and fruit-finishing periods without provoking unwanted vegetative flushes, tender shoot overgrowth, or delayed ripening.
Early Root Establishment: Delivering soluble orthophosphate directly through drip lines during transplanting promotes lateral root branching and mycorrhizal association. Phosphates migrate efficiently into the active absorption rhizosphere without becoming locked in alkaline topsoil strata.
Floral Initiation & Anthesis: High phosphorus availability triggers floral bud differentiation, strengthens pollen tube vigor, and minimizes premature flower drop in fruiting vegetables and perennial tree crops.
Fruit Bulking, Coloration & BRIX Elevation: The balanced $P:K$ ratio ($0:52:34$) accelerates sucrose loading from photosynthetic source leaves into sinks (fruits/grains), boosting overall sweetness (BRIX), enhancing rind thickness, improving firmness, and extending commercial post-harvest shelf life.

Years Experience
Sichuan Luobu New Material Technology Co., Ltd., founded in 2019, is located in Shifang City, Sichuan Province—one of China’s key phosphate production regions. The area is known for its strong phosphate resource base and well-developed industrial infrastructure, providing a solid foundation for fertilizer manufacturing and technical innovation.
The company focuses on the research, production, and supply of high-performance phosphate-based fertilizers for modern agriculture, pioneering ultra-fine spray drying and crystallization technologies for precision micro-irrigation and UAV aerial distribution.
Proven agronomic efficiency across diverse crop categories under automated drip and sprinkler systems.

Wheat and corn during grain filling

Rice reproductive stages

Citrus, grapes and apples during flowering and fruit setting

Vegetables and horticultural crops
Rigorous multi-regional trials demonstrating substantial yield improvements and nutrient use efficiency (NUE).





As a specialized manufacturer of drone-grade MKP and water-soluble fertilizers, we actively participate in industry development as a council member of the China Agricultural Technology Extension and Service Association and the China Phosphate & Compound Fertilizer Industry Association.
Discover our comprehensive collection of pure Monopotassium Phosphate and high-performance NPK water-soluble formulas engineered for global commercial growers and distributors.