9Thakur R P, leonard K J, Leath S. Efeets of temperature and light on virulence ofExserohilum turcicum on corn[J]. Phytopathology, 1989(79) 631-635.
10Chemeda F, Jonathan Y. Association of maize rust and leaf blight epidemics with cropping systems in Hararghe highlands, eastern Ethiopia [J]. Crop Protection, 2001 (20): 669-678.