The roots of why:
I was a new mom when the Alar scare happened.
This is a pretty concise description of it. Both sides of my family were primarily fruit farmers at that time. Not apples, so the effect wasn't direct but it hit pretty close to home anyway. The article says the apple industry was saved from collapsing. Maybe so, but a lot of apple farmers went bankrupt. For an error in one study. Despite solid published evidence from several sources over many years prior to the errorous study.
And it didn't end with acknowledging the error. It ended with the makers of Alar going bankrupt and federal regulation of the term "Organic."
This source has a sketchy name but it describes the history of organic certification pretty close to how I remember it (as an interested observer) from Rodale's Organic Gardening Magazines from the sixties and seventies (which included some history) on. So I used it to save a lot of typing here. I haven't read what else it says about anything and I don't necessarily agree with all of the author's goals.