Performing a plant biosecurity emergency: The generation of disease absence and presence in Northern Australia banana plantations

This paper explores the generation of presences and absences of objects in plant biosecurity practices. We use praxiography to trace how multiple versions of disease were generated on a quarantined banana plantation during an emergency response to a suspected outbreak of feared Panama disease. Attending to the practices, techniques and materials that established different versions of disease presence and absence, we ask if the momentarily certain absence of disease on a particular farm necessarily indicated a favourable biosecurity outcome, thus informing enhanced policy strategies for plant health. There were, in fact, multiple objects. Not only diseases, but multiple presences of health, stress, disease and disorder were involved in confirming the absence of Panama.