Diplodia macrospora: a threat to corn production in the Philippines
1987
Dalmacio, S.C. | Lozano, G.P. (Pioneer Overseas Corp., Cabuyao, Laguna (Philippines))
In 1985, Diplodia macrospora was found associated with ear rot and leaf blight on corn. Ear rotting in one corn-growing area in South Cotabato [Philippines] was about 20 percent. Since then both the ear rot and leaf blight have been consistently observed in almost all corn-growing areas in South Cotabato. Field observations and inoculation experiments indicated that the fungus causes three phases of infection, namely: the leaf blight phase appears to be initiated first, followed by the ear rot and stalk rot phases. Infection of the ear either proceeds or occurs simultaneously with the stalk rot phase. Symptoms of the leaf blight, ear rot and stalk rot are described.
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