This is an incredible lecture. It's titled "why insects avoid healthy plants." Fair warning, it is 2 hrs long. It's worth it to stick around for the Q&A afterwards. While the whole thing is applicable to gardening, the best part for me was his segment on the basedbean aphid.
https://youtu.be/w7BMVlCjQQE?si=HKWKdiftCkJLYGVZ