Which of the following is an example of a non-chemical pest management strategy?

The selection of crop rotation as a non-chemical pest management strategy is an important practice in agriculture that helps manage pest populations and improve soil health. Crop rotation involves alternating the types of crops grown in a particular field from season to season. This method disrupts the life cycles of pests and diseases that may be specific to certain crops, reducing their habitat and food sources.

By changing crops, farmers can decrease the chances of pest populations building up and can enhance biodiversity, which contributes to a more resilient agroecosystem. Additionally, different crops have varying nutrient requirements and growth habits, which can improve soil fertility and structure over time.

Other strategies mentioned, such as the use of insect growth regulators, spraying herbicides, and soil fumigation, involve chemical interventions that directly target pests or diseases and are considered chemical pest management methods.