Mango is susceptible to various diseases throughout its growth stages, from seedling to storage. Notably, mango dieback, caused by Lasiodiplodia theobromae (Pat.) Griffon & Maubl., also known as Botryosphaeria rhodina in its anamorphic stage, is particularly destructive. This disease, often referred to as tree decline disease, results in substantial yield reduction and compromised fruit quality.Given the seriousness of the disease and the need to address it at the seedling stage, this research aims to: isolate, identify, and conduct pathogenicity tests on the pathogen responsible for mango...