Which of the following is NOT a preventive measure for reducing weed infestations?

Allowing livestock access to the pond is not a preventive measure for reducing weed infestations. In fact, it can lead to an increase in weed problems. When livestock frequently access a water body, they can disturb the shorelines, compact the soil, and contribute to sedimentation, all of which can promote the growth of aquatic weeds. Additionally, livestock can also directly consume native vegetation, further reducing competition against invasive and unwanted plant species.

The other measures listed are all effective in preventing weed infestations. Maintaining good sod and grass cover can help stabilize the soil, reduce nutrient runoff, and limit the establishment of weeds. Checking for leaks in septic tanks is important because nutrient-rich wastewater can contribute to the growth of aquatic weeds. Avoiding runoff from chicken coops and feedlots is vital in preventing excess nutrients from entering water bodies, as these nutrients can fuel weed growth.