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downy mildew of maize

Peronosclerospora maydis


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Zea mays (maize)

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Leaves - abnormal colours


P. maydis causes a major disease in Indonesia, where losses were estimated at 80 to 90% in some locations in 1964 and 1968 (Purakusumah, 1965; Mikoshiba, 1983). Recently it has been detected in Australia (Bonde, 1982), but it has not been found in other countries. Early reports from Africa are probably erroneous (Semangoen, 1970; Kenneth, 1976).