Phomopsis azadirachtae - The Die-Back of Neem Pathogen

Abstract

Neem (Azadirachta indica) commonly known as ‘Indian lilac’ or ‘Margosa’, is a native tree to India. Neem finds very wide application and both wood as well as non-wood products are utilized in many ways. Neem products have antibacterial, antifungal, insecticidal and other versatile biological activities. However, neem is not free from microbial diseases though having biological activity against various microorganisms. Many bacteria and fungi are known to infect neem. A new fungus Phomopsis azadirachtae was reported on neem causing die-back. The fungus infects the neem trees of all age and size. The symptoms of the disease are twig blight, inflorescence blight and fruit rot. The disease results in almost 100% loss of fruit production.