How can I effectively put potassium in soil to improve plant growth and health?

To effectively add potassium to soil for better plant growth and health, you can use potassium-rich fertilizers like potassium sulfate or potassium chloride. These can be applied directly to the soil according to the recommended dosage on the product label. Additionally, incorporating organic matter like compost can also help improve potassium levels in the soil naturally. Regular soil testing can help monitor potassium levels and adjust fertilization as needed.