What nutrient in fertilizers is represented by the letter 'K'?

The letter 'K' in fertilizers represents potassium, which is a vital nutrient for plant health. Potassium plays several crucial roles in plant growth and development, including regulating water uptake, enzyme activation, and photosynthesis. It helps strengthen plants, making them more resistant to drought and diseases. Furthermore, potassium aids in the synthesis of proteins and starches, contributing to overall plant vigor and productivity.

Understanding the significance of potassium is essential for effective fertilization practices, as it ensures that plants receive adequate amounts of this nutrient for optimal growth and yield.