Institution: | 1.Department of Biological Sciences, University of Embu, P.O. Box 6-60100, Embu, Kenya ;2.Department of Plant Science and Crop Protection, University of Nairobi, P.O. Box, Nairobi, 29053-00625, Kenya ;3.Department of Soil and Environment, Precision Agriculture and Pedometrics Unit, Swedish University of Agricultural Sciences (SLU), Box 234, 53223, Skara, Sweden ; |