What is the effect of excessive nitrogen application on turf?

Excessive nitrogen application to turf can lead to lawn burn, a condition that occurs as a result of an over-concentration of nitrogen in the soil. When too much nitrogen is applied, it can create an imbalance in the soil's nutrient levels, resulting in high salt concentrations. These salts can pull moisture away from the grass roots, leading to dehydration and tissue damage, which manifests as brown, scorched patches on the lawn.

Understanding this phenomenon highlights the importance of following soil nutrient guidelines and performing soil testing before the application of fertilizers. Achieving a balanced nutrient level is crucial for maintaining healthy turf and preventing damage from excessive inputs.