The superelongation disease of cassava

A new disease of cassava has been found inducing epidemics in several cassava-growing areas of Colombia during the rainy season. The disease can be recognized by a characteristic exaggerated elongation of the internodes of young stems of infected plants and by the distortion and deformation of the youngest stems, petioles and leaf midribs. The epidermis commonly bears cankers, and frequently leaflets do not develop completely or leaf lamina do not expand fully. The causal agent is Tapharina sp. (AS)