Why are these banned for commercial use? 

 Why is this banned?

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 If it causes issues on your commercial farm then don’t grow them. 

https://image.nostr.build/fdf8f7eeef41f10c2047d8b5fdcda30663c9dd54ea85bef2aa62601ffb625549.jpg 

 That's a fine reason for a farmer to avoid them, but not a good reason for it to be banned.  

 The article reports the ‘outlawed potato’ is suitable for small farming, but was decertified for commercial production by the Canadian Government in 1976- hinting that the decertification was for corporate commercial interests.  

If they can outlaw a potato for corporate interests, it should be no surprise what else might be proscribed for the sake of corporate interests.