Which factor affects the buildup of thatch in a lawn?

Which factor affects the buildup of thatch in a lawn?

• A. The species of turf grass
• B. Over-fertilization of the grass
• C. Improper pH
• D. All of the above

Answer: (D)

Thatch buildup depends on how much organic matter the grass produces and how quickly that matter decomposes. The grass species you choose influences this because different grasses have different growth habits and organ material that can accumulate as thatch. If you fertilize too heavily, especially with nitrogen, the plant shoots up with more leaves and stems, producing more organic debris faster than it can break down, which builds thatch. Soil pH matters because the microbes that break down thatch work best within a certain pH range; if the pH is off, microbial activity slows and thatch accumulates. Since each of these factors can contribute to thicker thatch, they all play a role in its buildup. To prevent it, balance fertilizer, select an appropriate turf species, and maintain proper soil pH.

Thatch buildup depends on how much organic matter the grass produces and how quickly that matter decomposes. The grass species you choose influences this because different grasses have different growth habits and organ material that can accumulate as thatch. If you fertilize too heavily, especially with nitrogen, the plant shoots up with more leaves and stems, producing more organic debris faster than it can break down, which builds thatch. Soil pH matters because the microbes that break down thatch work best within a certain pH range; if the pH is off, microbial activity slows and thatch accumulates. Since each of these factors can contribute to thicker thatch, they all play a role in its buildup. To prevent it, balance fertilizer, select an appropriate turf species, and maintain proper soil pH.