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Fig. 8 | Chemical and Biological Technologies in Agriculture

Fig. 8

From: Densely rooted rhizosphere hotspots induced around subsurface NH4 +-fertilizer depots: a home for soil PGPMs?

Fig. 8

Change in pH (a), total P concentration (b), acid- (c) and alkaline phosphatase activity (d) in the liquid fraction of media 65 h after onset of incubation. Ca–P, Ca3(PO4)2; RP, rock phosphate; SA, sewage sludge ash; Pro, Pseudomonas sp. DSMZ 13134; Rhiz, Bacillus amyloliquefaciens FZB42; T-22, Trichoderma harzianum T-22. pH was inversely correlated to total P concentration (P = 0.002; r = − 0.47)

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