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"As usual, the dose makes the poison"

Yes, but it seems there is still the credo of "much helps much" applied (together with "toughen up you pussy"). Meaning they spray way more than what is needed. And usually there are lots of regulation when you can spray, like no strong wind etc. to prevent it from going anywhere else. You think the average farmer cares? As far as I know, the regulation authorities do not care either.

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Yes the average American farmer cares because inputs are expensive. Really expensive. That's why spot spraying on a massive scale has been invented. If you want to see one in action look up Welker Farms in YouTube. There are some videos and anecdotal evidence in a single field on input savings.

Ok, I think the average american farmer has way bigger field, but here in germany, there are often small patches of fields, so it might be expensive, but not soo expensive that quite some farmers would care to not spray on a windy day, as long as they can cover their fields (and their organic neibhor then cannot sell his products as organic).

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