A.W. Mwang`Ombe, G. Thiong`O, F.M. Olubayo and E.K. Kiprop
Plant Pathology Journal 6 ( 1 ): 66 - 71 , 2007
A.W. Mwang`ombe, G. Thiong`o, F.M. Olubayo and E.K. Kiprop
Plant Pathology Journal 6 ( 2 ): 141 - 146 , 2007