A meeting next month will decide officially on the proposed merger between Dow Chemical and DuPont. Stockholders will hold separate shareholder meetings on July 20th in Delaware and Michigan.
The companies announced a merger worth $120 billion.
After it's completed, Dow and DuPont would split into three separate, publicly-traded companies. One will be specifically agriculture.
Senate Judicatory Committee Chair and Iowa Senator Chuck Grassley is opposed to agribusiness consolidation.
He wants a thorough probe of the merger, with careful analysis on of it would limit seed choices and raise farmer costs.
He says if all the proposed mergers go through, there will be only four major seed companies.
DowDuPont would control 76 percent of the corn market and 66 percent of beans.
Grassley says while the Department of Justice has not halted a merger in decades, they have other options, "We do have [the Department of Justice] forcing Tyson to sell off combine units as part of their effort to take over Hillshire Farms as one example of where they didn't stop the merger but they adjusted it to a considerable extent."