What technique can be employed for effective pest management just before fumigation?

Using low-release chemigation systems is effective for pest management just before fumigation because these systems allow for the targeted application of pesticides through irrigation systems. This approach ensures that the active ingredients are delivered directly to the plant's root zone or to the affected areas, providing better pest control and minimizing the risk of resistance in the pest population. The method enhances the effectiveness of the fumigation process by reducing pest numbers prior to the actual fumigation event, creating a more favorable environment for the fumigant to work effectively.

The other options do not align well with pest management immediately prior to fumigation. Applying large amounts of fertilizers may inadvertently provide more resources for pests, thus exacerbating the problem rather than alleviating it. Cultivating the soil frequently can disrupt the soil structure and may not effectively target specific pest populations that are better managed through chemical means. Using traditional pesticides, while potentially effective, may not be as precise or efficient as the low-release chemigation systems, which offer a more practiced and controlled method of pesticide application.