Ornamental and Turf Pesticide Applicators Practice Exam

How does healthy soil drainage affect turfgrass?

1. It can lead to increased pests

2. It helps retain excess water

3. It encourages deep root growth

4. It limits grass varieties

The correct answer is: It encourages deep root growth

Healthy soil drainage plays a crucial role in promoting the overall health and vigor of turfgrass, and one of its most significant benefits is how it encourages deep root growth. When drainage is optimal, excess water does not accumulate in the soil, preventing conditions that could lead to root rot or other fungal diseases. This allows the grass roots to access air and necessary nutrients more effectively, fostering deeper root systems. Deep-rooted turfgrass is better equipped to withstand drought conditions, competition from weeds, and stress from foot traffic or environmental factors. Well-drained soil encourages the grass to grow downward rather than horizontally, which contributes to a more robust lawn overall. The grass can better stabilize itself and access moisture even during dry periods, leading to improved resilience and health. Healthy soil drainage directly enhances the capability of turfgrass to thrive by ensuring that roots have the space and conditions they need to grow deeply, which in turn supports the grass's overall health and durability.