Coconut in Sri Lanka is affected  by several diseases of known aetiology. They are: But Rot disease caused by Phytophthora palmivora, stem bleeding disease caused by Ceratocystis paradoxa, leaf blight disease and Ganoderma bole rot caused by fungi of polyporaceae. These diseases do not cause much concern and can be managed easily, primarily through adoption of proper cultural practices. Leaf Scorch Decline is a disorder prevalent in certain areas of Sri Lanka with incidence of less than 1%. Although extensive investigations have been carried  out on bacteriological, mycological and other related  microbial aspects of its aetiology, no causal agent has been found. Investigations indicate  that physical factors of the soil such as hard pan and water logging are related  to this disorder. Tapering  is an other condition brought about by neglect and poor management. Timely and proper management often  bring about alleviation of these disorders.