Which is a favorable condition for preventing weed infestations?

High competition for resources is a favorable condition for preventing weed infestations because when established plants, such as grasses in turf, are healthy and thriving, they can more effectively compete with weeds for sunlight, water, and nutrients. This competition limits the resources available for weed seeds, making it harder for them to germinate and establish. Maintaining a dense and vigorous turf can create a natural barrier against weeds, reducing their chances of survival and proliferation.

Conversely, factors like wet and compacted soil can create ideal conditions for some weed species by providing enough moisture and limited aeration, which can stress desirable plants while benefiting weeds. Low mowing heights may weaken turf grasses, leaving them less competitive and more vulnerable to weed infestation. Frequent disturbance of soil, such as tilling or cultivating, can also disrupt established plants and expose the seed bank, allowing for weed germination.

Thus, fostering high competition among desirable plants is key to effective weed management in turf settings.