Marchelo-d’Raga, Philip, Yousif Mohamed, & Gasim Dafallah. " Studies on smut disease (Ustilago scitaminea Syd.) of sugarcane: Effect of some substrates on the germination of teliospores*." Gezira Journal of Agricultural Science [Online], 9.2 (2011): n. pag. Web. 26 Aug. 2019