Astonishing changes have occurred to agricultural production systems since WWII. As such, many people tend to date the origins of industrial chemical agricultural to the early 1940s. The origins of industrial chemical agriculture, however, both on and off the field, have a much longer history. Indeed, industrial agriculture’s much discussed chemical dependency—in particular its need for toxic chemicals—and the development of the industries that feed this fix, have a long and diverse past that extend well back into the nineteenth century. (...) In this paper, through the narrative of a late nineteenth century creation story, I go in search of a crucial linchpin in that longer history. I argue that industrial pest control has been imbued with the practices, discourse, materials, and ethics of modern chemical warfare since its inception. Faced with pest-induced collapse, Los Angeles citrus growers and scientists of the USDA and UC Agricultural Extension chemically fixed the citrus pest problem by developing and utilizing the cyanide gas chamber. Cyanide fumigation quickly became the toxic cornerstone of the citrus industry, enabling its intensification and expansion as the pest infection became systemic. By the turn the century, furnished with an economic poison made cheap and weapons-grade due to changes in the world gold mining industry, growers transformed cyanide fumigation into a necessary agricultural input. In chemically overriding an agro-ecological contradiction of capitalist agriculture, growers, scientists, and government officials amalgamated industrially organized agriculture to accelerating and endless chemical warfare. These suddenly necessary agricultural practices signaled a state change in world-ecology and agroindustrial organization, thus, the discovery of effective industrial control for citrus pests was not only a pivotal moment in the history of Southern California but it was also an event that has had world-historical implications. (shrink)