Preliminary report on investigating major sugarcane fungal diseases in Guangxi

[Objective]The purpose of the present study was to determine the species and the occurrence status of major sugarcane fugal diseases in sugarcane plantation areas of Guangxi in order to provide scientific references for controlling sugarcane diseases.[Method]In 2009-2011,species and occurrence degrees of major sugarcane fugal diseases in sugarcane plantation areas of Guangxi were investigated through randomized surveys,farmer interviews,literature references,and location investigations;diseased sugarcane samples were collected and their species were identified through pathogen isolated culture and other relevant methods.[Result]Thirteen species of fungal diseases were identified,which were Thielaviopsis paradoxa(de Seynes) V.Hohnel,Ustilago scitaminea Sydow,Fusarium moniliforme Sheldon,Puccinia melanocephala H.P.Syd.,Stagonospora sacchari Lo et Ling,Colletotrichum falcatum Went,Phyllosticta saccharicola P.Henn.,Pellicularia sasakii(Shirai) Ito,Elsinoe sacchari L.,Helminthosporium sacchari(Breda de Haan) Butler,Mycovellosiella koepkei(kruger) Deighton,Bipolaris stenospilum(Drechs.) Shoem.,and Cercospora longipes Butler.Out of all of the fungal disease characteristics,smut,rust,tip rot,and pineapple disease were the most rampantly detrimental to sugarcane quality and yield.[Conclusion]Ustilago scitaminea Sydow turned out to be the most serious sugarcane disease;it is urgent to begin breeding highly-disease-resistant sugarcane varieties with elite field and environment adaptations to replace the current susceptible-to-diseases sugarcane varieties in order to increase production.