Eli5: How do farmers keep poisonous plants from growing in crops and being harvested and packaged with edible plants?

Question

Eli5: How do farmers keep poisonous plants from growing in crops and being harvested and packaged with edible plants?

In: Other

Answer 1

The combine harvester machine actually helps take care of this. You can set the head height to be above where a lot of those are if present, and the internals of the machine are already designed to pick out the useful parts like corn kernels or grains and throw away the rest.

For stuff like strawberries etc thats usually handpicked.