Plus the chemicals sprayed on spuds to control late blight towards the end of the season. About to be banned by the EU as they are considered so bad for the environment. Not much is known about how bad they are for human health.
As said above organic doesn’t mean chemical free. Quite a few organic control measures are assumed to be safe as they are natural chemicals. But the reality is that often they just haven’t been tested as much.
From the environmental standpoint “organic” control measures are frequently less effective or long lasting so need more regular application (increased diesel use and land compaction) or be applied in greater doses. While they may not affect human health they may have greater effects on the environment, for example organic farming approved copper used to control fungi and oomycetes can accumulate in the soil and be toxic to plants, beneficial fungi and drastically alter the soil microbiome. At high enough levels it is harmful to us, although admittedly unlikely to be concentrated through the food chain route.
So a mixed bag really. Don’t assume that organic is healthy or industrial farming is bad, there are arguments each way and it is best to pick and choose based on the available evidence. Until someone does studies on the long term exposure risks of any type of control agent it is futile to claim that one farming method is safer. Probably best not to eat glyphosate though…..