Fig. 4From: Densely rooted rhizosphere hotspots induced around subsurface NH4 +-fertilizer depots: a home for soil PGPMs?Effect of NH4 + on growth of Trichoderma harzianum T-50 mycelium (a) and mycelium diameter (b) on malt extract peptone agar after 48 h. Different letters show significant difference between treatments (P < 0.05) (mean ± SE, n = 3, One-Way ANOVA, Tukey test, α = 0.05)Back to article page