Abstract

Abstract A description is provided for Mycosphaerella cruenta . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Phaseolus, Vigna ; also Calopogonium, Lablab niger, Mucuna and Stizolobium deeringianum [Mucuna pruriens] . DISEASE: Leaf spot of cowpeas. GEOGRAPHICAL DISTRIBUTION: Africa: Egypt, Ghana, Liberia, Malawi, Niger, Nigeria, Sierra Leone, Sudan, Rwanda, Togo, Uganda, Zambia. Asia: Bangladesh, Brunei, Burma, China, Hong Kong, India Indonesia, Iran, Malaysia, Pakistan, Saudi Arabia, Taiwan. Australasia & Oceania: Fiji, Papua New Guinea. Central America & West Indies: Barbados, Cuba, Grenada, Guatemala, Haiti, Jamaica, Puerto Rico, St Lucia, St Vincent, Trinidad. North America: Canada, USA. South America: Bolivia, Brazil, Guyana, Venezuela. TRANSMISSION: Presumably by windborne ascospores and conidia, and by mycelium in soil on infected plant debris.

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