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Multi-MKP is a fully water-soluble mono-potassium phosphate fertilizer, a highly efficient source of phosphorus and potassium for plants. As a nitrogen-free fertilizer, Multi-MKP is the preferred source of phosphorus and potassium when nitrogen fertilization should be limited. A common case is at early growing season, when phosphorus and potassium are needed at high rates for the establishment of root system. Application of Multi-MKP at the productive stages of sugar-rich fruit crops helps to increase sugar content and to improve the quality of these. Multi-MKP can be applied in combination with other fertilizers to meet crop nutritional needs throughout the growth cycle. Its high purity and water-solubility make Multi-MKP an ideal fertilizer for fertigation and for foliar application. Additionally, Multi-MKP is suitable for preparation of fertilizer blends and production of liquid fertilizers. When applied as foliar spray, Multi-MKP acts as a suppressor of powdery mildew. Product analysis Nutrient Content (%) P2O5 52% P 22.7% K2O 34% K 28.7% Water solubility The solubility of Multi-MKP is enhanced by increase in water temperature, as shown in the following table. Water temperature (oC) 0 10 20 30 40 Solubility (g/100g water) 14.8 18.3 22.6 28.0 33.5 pH and EC Multi-MKP has a moderately low pH that remains almost constant at different concentrations. Concentration (%) 0.1 0.2 0.3 1.0 5.0 pH 4.8 4.7 4.7 4.6 4.4 The electrical conductivity (EC) increases substantially when high concentrations of Multi-MKP are used, and yet, its low salt index assures safe use. Concentration (%) 0.1 0.2 0.3 1.0 5.0 EC (mS/cm) 0.72 1.42 2.13 6.5 33.5