Farmers, antitrust activists are worried that Big Ag is only getting bigger

Low commodity prices are rippling up and down the farm-economy food chain — from the farm to the boardroom — and it has many of the huge companies that control farm inputs looking to a new future.  Most of the seeds and chemicals used to grow the world's crops come from just a handful of big companies, and the largest of those multinational companies — Monsanto, Bayer, Dow, DuPont, and Syngenta — are trying to get even bigger.  The prospect of fewer, larger companies controlling so much of the basic food supply is giving some farmers and antitrust advocates heartburn.  With massive supplies of the world's most important crops, like corn and soybeans, prices have plummeted. Seed industry consultant Bud Hughes says that doesn't just affect farmers. The massive companies that supply farmers are hurting, too.