Well in the western world, we're going to have a pretty marked decrease in population pretty soon. That also means fewer people to work the land (among other serious challenges), but it appears overpopulation will not be one of those problems to the same degree.

And the state of industrial AG isn't static, robotic micro pesticides are interesting for example. Not that I'm a fan of them, but it would be great to see us move away from showering everything in loads of agent orange and have more targeted application.