Facility

Pioneer Hybrid Corn Seed Production Region (Iowa / Illinois / Indiana)

Pioneer (Corteva) primary hybrid corn seed production zone across the US Corn Belt — Iowa, Illinois, and Indiana. Hybrid corn seed is produced by planting male (pollen donor) and female (detasseled mother) inbred parent lines in adjacent rows in isolation fields, typically 6-10 miles from any commercial corn to prevent genetic contamination. The female rows are detasseled (male flowers removed) by crews of seasonal workers to prevent self-pollination; pollen from the male rows then fertilizes the female rows, producing hybrid seed. Iowa, Illinois, and Indiana are the dominant seed production states because: (1) commercial corn grows well in these states, providing the production infrastructure; (2) isolation distances can be maintained in the fragmented field geography; (3) Corteva's Johnston IA headquarters enables logistics management. Pioneer contracts approximately 3,500 farmer-growers across the Corn Belt to produce hybrid seed each season. The same Iowa fields that produce Pioneer commercial seed contain some of the world's highest-value agricultural IP — rows of proprietary inbred parent lines worth far more per plant than any commodity crop. Source: USDA NASS Crop Production Survey 2024; Corteva Agriscience grower relations