The Environmental Working Group (EWG) tests produce every year for pesticides which results in a list of those with the most pesticide make the dirty dozen list. (Those with the least pesticide make the clean dozen list). Choose organic for those on the dirty 12 to reduce your intake of pesticides. Here’s a copy of the 2021 list:
Do you know the Dirty Dozen? (guide to pesticides in produce)
Moyers Nutrition (formerly DietitianPro®) 