Peter Jason wrote:

Reported in the news recently was the long-overdue intention of the USA to
start aerial spraying the opium poppies of Afghanistan with weed killer.

Grrreeaat! Evidence suggests that the constant spraying of coca in
South America has selected for a Roundup-resistant coca plant, which
is being enthusiastically propagated and cultivated. Guess we'll have
herbicide resistant poppies next.

M. Reed