Details are given of the occurrence, symptoms, aetiology, pathogenicity and control of diseases occurring on Tectona grandis, Bombax ceiba [B. malabaricum], Ailanthus triphysa, Gmelina arborea, Dalbergia latifolia, Ochroma pyramidale and Eucalyptus spp. The results of the survey are discussed and appendices provide lists of fungicides evaluated against various pathogens, cultural and morphological characters of fungal and bacterial pathogens and a list of pathogens and their hosts. There is a subject index.