Scenario of fungal leaf spot and leaf blight diseases in coconut and arecanut

Abstract

Coconut and arecanut are two important plantation crops (palms) of the tropical region. Throughout the growth period, the palms are affected by different diseases from root to fruit. Among which Leaf spot and Leaf blight diseases are observed in all palm cultivated areas. The severity of the diseases depends on favourable conditions and nutritional status of the garden. However, the drastic change in climate caused serious impact on the distribution of the leaf spot diseases. Previously minor diseases like Leaf spot of arecanut (Colletotrichum species and Phyllosticta species) and Lasiodiplodia leaf blight of coconut are becoming lethal in different locations. Regular monitoring and integrated disease management approach is the key to keep the disease in check. An attempt is being made in the present review paper to summarize the different leaf blight and spot diseases affecting coconut and arecanut.