Fig. 4From: Structural diversity of bacterial communities in two divergent sunflower rhizosphere soilsPrincipal Component Analysis (PCA) plot of the bacterial phyla distribution and soil environmental variables of both rhizosphere and bulk soils from Lichtenburg and Krayburg. (OM = Organic matter, N-NH4 = Ammonium-N, N-NO3 = Nitrate, Total C = Total carbon, Total N = Total nitrogen)Back to article page