What is the primary nutrient provided by Potassium Nitrate?

Potassium Nitrate primarily provides water-soluble nitrogen along with potassium, which is essential for plant growth. Nitrogen is a critical nutrient that supports the development of foliage and overall plant vigor, while potassium plays a key role in various physiological processes, including water regulation, enzyme activation, and photosynthesis.

Unlike phosphorus, calcium, or sulfur, which are also important nutrients for plants, Potassium Nitrate is specifically recognized for delivering both nitrogen and potassium in a readily available form, making it particularly beneficial for short-term crop nutrition and improving root development, flowering, and fruiting. The combination of these two nutrients helps plants to thrive and achieve optimal growth, thus highlighting why this answer is correct.