Potassium is one of the four essential elements required by plants, playing a vital role in physiological and morphological processes. It contributes to protein synthesis, sap movement within the vascular system, osmotic regulation, and stomatal function. These mechanisms enhance fruit color, aroma, flavor, storability, and overall resistance against environmental stresses such as cold, heat, salinity, and drought. Ultimately, potassium is a major factor in improving both the yield and quality of agricultural products.

Among various potassium sources, potassium sulfate is recognized as one of the best fertilizers due to its high solubility and additional sulfur content, which is also an essential nutrient for plants.

The key quality indicators of potassium sulfate include a chlorine content below 0.2%, solubility above 120 g/L at 25°C, acidity between 2.5 and 3.2, and the absence of impurities caused by production methods. Moreover, its pure white color, uniform granulation, and consistent texture are visual signs of superior quality.

Sobhan Nahadeh Sabz Zarrin Company, with advanced technical expertise, skilled specialists, and upgraded production processes, has succeeded in producing potassium sulfate of competitive quality. In certain aspects, this product even surpasses leading imported brands, offering farmers and the domestic market a reliable and world-class source of potassium.