Corn, cotton, and soy are all heavily subsidized crops.  If they actually had to pay for their own poisons, then maybe they would give it a second thought, but not so much when it's on Joe Taxpayer's dime.

And vastly lower costs at the same time.  Furthermore all the huge GHG releasse related to chemical ag would be eliominated (over half of human GHG is ag related).

A vast manufacturing base would be created, replacing the chemical, oil, and agribizz industries and huge, costly  subsidy programs that are now involved in monopolizing the food supply.  Healthcare costs would drop as dangerous substances are removed from the food chain, like antibiotics, hormones, pesticides, non-nutritive additives that boost obesity, and herbicides.

http://amazngdrx.blogharbor.com/blog

The good jobs produced by the robotic farming industries and farms could replace those lost in conventional ag, chemical, and oil industries.  Huge energy sources would be opened up from organic waste stream biodigesation and fertilizer and energy production.  There is a whole new industry in itself, backing up renewable energy with waste stream biomass recycling.

Ask a college engineering team to work with their ag students on this, start a contest among  schools as in other engineering challenges.  simply managing a small garden with simple robotics at first, then on to  planting..all the way to harvesting.  Why not?  or should we let chinese students pioneer this alone?  Why shouldn't ours be onboard this re-evolution?

One day we will wake up and all the fields will be dead from mono-cropping and over saturation of chemicals. Monsanto will toss these farmers aside and move on to other lands to destroy. And god forbid the farmers actually try and stand up for themselves. monsanto's battery of lawyers will convert these farmers into the new poor to shut them up (it's already happening).

When you dance with the devil, don't be surprised if you don't only get burned but also flayed open for all the vultures to pick at your bones.