Which practice is most beneficial for preventing weed germination in turf?

Mowing at the correct height and avoiding over-fertilization is the most beneficial practice for preventing weed germination in turf. Proper mowing height ensures that the grass is healthy and vigorous, which helps it outcompete weeds for nutrients, light, and water. Grass mowed too short can become stressed and more susceptible to weed invasion. Maintaining the lawn at the proper height allows the grass to develop a stronger root system and canopy, thus limiting the opportunities for weeds to germinate and thrive.

In addition, over-fertilization can lead to lush growth that may attract weeds, as high nutrient levels can create an imbalance that favors undesirable plants. By managing fertilization correctly, the turf remains healthy while reducing the chance for weeds to establish themselves.

The other options do not effectively target the prevention of weed germination. Frequent fertilization without regard to the growth cycle can contribute to nutrient overload, resulting in increased weed pressure. Regular shallow watering may lead to shallow root systems, making grass more susceptible to drought stress and allowing weeds to establish more easily. Finally, planting without considering soil type could result in poor turf performance, encouraging weed growth as the grass struggles to thrive.