Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Leaf blight of ponyal in Chittagong University campus.

Abstract

Observations recorded over 3 yr (1976-78) are used to describe the development and symptoms of this disease of seedlings of ponyal (Calophylum enophylum [Calophyllum inophyllum], an important forest species) which was found both in the nursery of the Chittagong University Rural Development Project and in the University Botanical Garden. The disease started with the occurrence of small brown spots, which developed into larger lesions, and led to leaf discoloration, partial death, and sometimes shedding. The dominant fungus isolated from healthy and diseased leaves was Pestalotia sp., which was demonstrated to be pathogenic to healthy leaves, and was re-isolated successfully after artificial inoculation. Data are given on the incidence % and infection index of the disease on naturally infected plants in 1976-78.