Breeding for insect-resistant cotton across imperial networks, 1924–1950

This paper investigates the elevated expectations and dramatic downturns of the Empire Cotton Growing Corporation’s African experimentation program. It follows the trials of U.4, an insect-resistant variety bred to withstand continental growing conditions, whose expansion through east and southern Africa was filled with promise but ended in disappointment. My argument has two strands. First, U.4 was a product of imperial connections. It was an amalgam of breeding knowledge accumulated in India, specialized training received in Trinidad, and specimens imported from across the empire. Transnational scientific networks were crucial to the Corporation’s initial breeding successes. Second, the story that follows suggests that imperial scientific experts did not impose the Corporation’s research goals monolithically across a wide range of African environments. Rather, Corporation scientists recognized the diversity of African environments and adapted their breeding programs to match local agro-ecological realities. I suggest that the ECGC breeding program is a story of expert knowledge that incorporated rather than undermined ecological specificity.