Top Definition
Scab is the most important disease of cowpea (Vigna unguiculata L.) in the northern part of Nigeria. Is provocated by a fungal Sphaceloma (Elsinoe phaseoli) An ascomycete whose products principale are Gibberellins, especially gibberellin A4.
Cowpea suffers by scab disease
by Andres Castillo May 27, 2006
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