Economic Tidbits

Concentrating on Market Concentration

Market concentration in agricultural input and processing sectors is an ongoing concern for many producers. They worry large suppliers or processors can leverage market power to manipulate prices. A paper released in June by James M. MacDonald, XIAO Dong, and Keith O. Fuglie of the USDA Economic Research Service (ERS) entitled Concentration and Competition in U.S. Agribusiness explores concentration and competition trends in agriculture. The paper examines three agribusiness sectors—seeds, meatpacking, and food retailing—and highlights the complexity of examining economic impacts, both pro and con, of concentration and market power. 

MacDonald et al. write that concentration has increased markedly over the last four decades in the seed industry. During 2018-20, two seed companies accounted for 72 percent of planted corn acres and 66 percent of the planted soybean acres in the United States. The four-firm concentration ratio, the proportion of sales accounted for by the four largest firms, was 80 percent for corn and 75 percent for soybeans in 2016–17. And this does not account for the mergers which have occurred between Dow Chemical–Dupont and Bayer–Monsanto since then.

At the same time seed prices paid by farmers rose notably too. Between 1990 and 2020, the average price paid for seed rose 270 percent with prices for genetically modified (GM) seed rising a remarkable 463 percent. But, while there is a correlation between concentration and seed prices, it does not mean there is causation. According to MacDonald et al., higher development costs for GM seed and increased productivity for farmers from using GM seed could account for the higher prices. The authors write that research has shown “productivity gains more than paid for the higher cost of seed” and comment “the rise in seed prices for GM crops is not unlike what happened to seed prices when hybrid corn was introduced in the 1940s and 1950s. Both innovations significantly raised farm productivity and profitability, and despite the higher seed cost, farmers quickly adopted them.”

The meat processing sector is also very concentrated. Table 1 shows four-firm concentration ratios for segments of the sector over time. In 2019, the largest four firms were responsible for 85 percent of steer and heifer processing and 67 percent of hog processing. Much of the concentration in the sector stems from the construction of new facilities or expansion of existing facilities to achieve economies of scale. The economies of scale led to lower processing costs. The authors write “studies of cattle market pricing prior to 2010 found limited evidence of packer market power. Lower processing costs appeared to be largely passed to consumers, and the resulting increased demand for beef in turn led to higher cattle demand and prices.” But they go on to say, “developments since 2010, which show rising spreads between processor prices paid for livestock and received for meat, as well as new entrants to the industry, suggest that meatpackers now have been able to exercise greater market power over livestock prices than in earlier decades. New entry, and plant expansion among incumbent producers, will determine whether such market power can be maintained.”


Source: James M. MacDonald, XIAO Dong, and Keith O. Fuglie, Concentration and Competition in U.S. Agribusiness, USDA Economic Research Service, Economic Information Bulletin Number 256, June 2023.

MacDonald et al. provides a thorough history and background on the growth of concentration in agricultural input and processing sectors. The paper highlights the complexity surrounding concentration and market power and the difficulty of accounting for all the factors which influence prices in a market. Concentration can result from technology, innovation, or scale economies which reduce costs and prices benefitting the economy. Concentration can also bring about the abusive use of market power. To be sure, the level of concentration in agriculture necessitates vigilance to assure abuses do not occur. The paper can be found at:

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