What can worsen turfgrass health in relation to nematodes?

Maintaining poor soil health can significantly worsen turfgrass health, particularly in relation to nematode infestations. Healthy soil is vital for the overall growth and resilience of turfgrass. Poor soil health can include issues such as compaction, imbalanced pH levels, low organic matter content, and inadequate microbial activity. These factors can create an environment that is conducive to nematode populations, as stressed turfgrass is more vulnerable to pests and diseases.

In contrast, healthy soil can improve the root system's strength, enhance nutrient availability, and support beneficial organisms that can outcompete or directly combat nematodes. This means that maintaining good soil health through practices such as proper aeration, organic amendments, and balanced fertilization can help reduce the impact of nematodes on turfgrass.

The other factors mentioned, like over-fertilization and excessive watering, can certainly create stress conditions that may aggravate pest issues, but maintaining poor soil health is a more direct and fundamental issue that compromises the turfgrass's ability to thrive and resist pest pressures, including nematodes. Planting diverse species can actually help in promoting a stronger ecosystem that can resist pests better, making it a beneficial practice rather than a detrimental one.