Which element is second most needed in order to sustain turfgrasses?

Which element is second most needed in order to sustain turfgrasses?

• A. Calcium
• B. Potassium
• C. Phosphorus
• D. Nitrogen

Answer: (B)

Potassium plays a crucial role in keeping turfgrasses healthy over time. While nitrogen drives growth and vibrant color, potassium enhances stress tolerance, water regulation, and overall vigor, all of which are essential for sustained performance under heat, drought, and wear. It supports strong root development, helps maintain cell stability, and improves disease resistance, aiding quick recovery after mowing and traffic. Phosphorus matters mainly during establishment for root formation, and calcium is less frequently limiting in typical soils, so potassium inevitably becomes the next most important nutrient for ongoing turf sustainability.