How does trap cropping function in pest management?

Trap cropping is a strategic pest management technique that involves planting a specific crop to attract pests away from the main crop. By establishing a crop that is more appealing to the targeted pests, farmers can effectively reduce the pest population on their primary crops. This method not only helps to protect valuable plants but also minimizes the need for chemical pesticides, promoting a more eco-friendly approach to agriculture.

For example, if a farmer is growing cabbage and is concerned about aphids, they might plant a type of mustard or rapeseed nearby, which attracts the aphids. When the pests congregate on the trap crop, they can be more easily managed, either through physical removal or targeted treatments, allowing the main crop to thrive with less competition and damage.

The other choices reflect strategies or outcomes that do not align with the primary purpose of trap cropping. Introducing disease to the main crop does not support pest management, nor does relying on additional pesticides enhance the effectiveness of the trap crop strategy. Attracting beneficial insects for pollination, while beneficial for overall crop health, does not directly relate to the main function of trap cropping in pest management.