What is the primary source of potassium fertilizer?

Potassium chloride is considered the primary source of potassium fertilizer due to several factors, including its high potassium content, cost-effectiveness, and availability. This compound contains approximately 60% potassium, making it one of the most concentrated sources of this essential nutrient for plants. It is widely used in agriculture because it effectively supplies potassium, which plays a vital role in various plant physiological processes, including water regulation, enzyme activation, and photosynthesis.

Potassium chloride is also favored because it is readily soluble in water, allowing for easy application and uptake by plants. Its relatively low production cost compared to other potassium sources makes it accessible for many farmers and agricultural producers, thus contributing to its status as a primary fertilizer option. In diverse cropping systems, potassium chloride can help enhance crop yields and overall plant health, aligning with nutrient management practices focusing on efficient nutrient use.