Which of the following is a cultural method of pest management?

Soil tillage is considered a cultural method of pest management because it involves altering the environment to prevent or control pest populations. This practice can disrupt the life cycles of soil-borne pests and diseases, reduce the prevalence of weeds, and improve soil conditions which contribute to healthier crops. By turning the soil, this method also exposes pests and their eggs to natural enemies and environmental factors that can reduce their numbers.

Cultural methods focus on changing farming practices and techniques rather than relying solely on chemical interventions or physical removal. This approach promotes sustainability by minimizing chemical usage and enhancing the ecological balance within agricultural systems. The other options, while effective in managing pests, involve chemical applications or specific physical actions that do not incorporate the broader cultural practices associated with environmental modification.