Studies on fungous organisms associated with wilted jute plants

Abstract

An investigation of wilting disease of jute (Corchorus olitorius L.) was conducted in the year 1956. Random samples were collected from different experimental plots of the Pakistan Central Jute Research Institute, Dacca, East Pakistan. Some of the wilted plants were also affected with common stem-rot and black-band diseases. Fungal organisms were isolated from these samples by standard cultural methods. Isolations made five times from these diseased plants showed the presence ofBotryodiplodia theobromae Patouill Griff. &Maubl.,Fusarium solani (Mart.)App. &Woll.,Glomerella cingulata (Stonem.)Spauld &v. Schr. C.,Macrophomina phaseoli (Maubl.)Ashby andRhizoctonia solani Kuhn in association.Glomerella cingulata was the most predominant organism in the wilted jute plants. All the five fungal organisms were found to be pathogenic to seedlings ofCorchorus olitorius causing pre-emergence killing and post-emergence damping off. With respect to pathogenicityGlomerella cingulata was followed byBotryodiplodia theobromae, Macrophomina phaseoli, Rhizoctonia solani andFusarium solani, causing average mortality of 90, 57, 50, 49, and 28 % respectively.