Papaya Mealybug in Kenya: Identification, Management, and Future Outlook

Abstract

Abstract Papaya mealybug, Paracoccus marginatus is the most important and damaging insect pest species attacking papaya in Kenya. In addition, it feeds on various crops, fruits, and ornamental plants, most of which are of high economic value in Kenya’s agricultural sector such as chilli pepper, mango, citrus, cassava, avocado, and coffee. The mealybugs cause damage by inserting their stylets into fruits, leaves, and stems, directly feeding on the plant’s vascular system and depleting the sap. Consequently, this leads to chlorosis, plant stunting, leaf deformation, and, if left uncontrolled, leads to eventual plant death. The control of papaya mealybug on Kenyan farms has primarily depended on the application of chemical pesticides and the implementation of cultural practices, but the effectiveness of these methods has been widely reported as inadequate and burdensome. Biological control using a parasitoid Acerophagus papayae offers an alternative and sustainable option for the management of papaya mealybug and simultaneously safeguards the native biodiversity threatened by excessive pesticide use. This case study provides insights into the identification, distribution, impacts, and existing management strategies of papaya mealybug in Kenya. Additionally, it emphasizes ongoing and future research endeavours aimed at enhancing papaya mealybug management techniques. Information © The Authors 2023