Iowa farmers face a crisis. Crop prices have fallen by more than 50 percent since 2013, with no end in sight. At the same time, farmers hold more debt and possess fewer capital reserves to fall back on. In fact, farmers’ debt levels are almost as high as they were prior to the farm crisis of the mid-1980s.

Meanwhile, a wave of mergers among the world’s agricultural giants is upending the markets for seeds, fertilizers and pesticides. If approved, the proposed merger would result in just two companies — Monsanto-Bayer and Dow-DuPont — controlling about three-quarters of the U.S. corn seed market. The power that these corporations would hold in the seed market is unprecedented.

Farmers are already being squeezed. The price of corn seed has more than doubled in the past 10 years — from $51 per acre in 2006 to $102 in 2015 — as a result of similar consolidation, including Monsanto’s purchases of DeKalb and Cargill's international seed business. If the Monsanto-Bayer merger is permitted, this problem will only intensify, further limiting farmers’ choices and making the products they need even more expensive.