A better way for you to understand organic farming is to hear from the farmers themselves. I think that all these people know that there is a difference. If you get on a chemical system , the only way you can keep going is to keep adding more and more powerful chemicals, if you get on an organic system it will perpetuate itself. You don't need to keep adding more and more fertilizer because it is a natural system. They are short term solutions, but they don't solve any long term problems.
Corn is grown organically on some farms.
Info 300,000 farmworkers a year suffer from pesticide related illness in the United States according to the United Farmworkers of America.