In our last discussion on Chemical Agriculture we learned that plants on chemical nutrients like Miracle Grow in the garden or corn in the field, look really lush and nice to our narrow vision of the spectrum.
To the insect pests this rapid uptake of highly soluble nutrients makes the plants look out of balance and sick. The insects both good and bad have antenna arrays in their bodies that are sensitive far outside the visual spectrum into the infrared.
To these pests the large corn field mono-culture screams, I'm sick, I'm unhealthy, I'm out of balance.