Average Corn Yields 1866-2025

This graph illustrates the long-term transformation of U.S. corn production, with each of the three segments representing a distinct era in agricultural history. From 1866 to 1950, yields rose slowly because farming relied heavily on manual labor, animal power, and open‑pollinated seed varieties. The modest upward trend during this period reflects incremental improvements, including the introduction of basic mechanization and early fertilizer use.

The sharp jump beginning around 1950 corresponds to the Green Revolution—a period marked by the widespread adoption of hybrid seeds, synthetic fertilizers, pesticides, and more powerful machinery. This era fundamentally changed how farmers managed crops, and the trend line’s steep slope shows how quickly yields responded.

The final segment, 1995–2025, aligns with the rise of biotechnology, precision agriculture, and data‑driven management. Genetically engineered traits, GPS‑guided equipment, variable‑rate inputs, and improved soil and crop monitoring all contributed to even faster yield gains. The steepest trend line in the graph illustrates how modern technology has accelerated productivity to an unprecedented level, surpassing anything seen in earlier periods.