What is one way to improve turfgrass resilience against diseases?

Employing proper mowing techniques is a key factor in enhancing turfgrass resilience against diseases for several reasons. First, correct mowing height helps maintain the appropriate leaf area for optimum photosynthesis and overall plant health. Taller grass blades can shade the soil, reducing the temperature and moisture levels that a pathogen might thrive in. Additionally, regular mowing prevents the development of thatch, a layer of decomposing organic material that can harbor pathogens.

Moreover, adjusting the mowing frequency and ensuring that blades are sharp can help produce clean cuts, minimizing the stress on the grass and creating an environment less conducive to disease development. This practice not only promotes healthier turf but also encourages deeper root growth, which can further enhance resilience.

In contrast, the other options present practices that either do not effectively bolster turfgrass health or could potentially be detrimental. Heavy watering can lead to waterlogged conditions, which may encourage root rot and other diseases. Using only synthetic fertilizers may not provide the balanced nutrients needed for healthy growth, and reducing sunlight exposure can hinder photosynthesis, weakening the grass and making it more susceptible to diseases.