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Fig. 1 | SpringerPlus

Fig. 1

From: Characterisation of soils under long-term crop cultivation without fertilisers: a case study in Japan

Fig. 1

Soil thin sections and monochrome images of the soil microstructure on Eniwa farms. Bar 3.0 mm. a Well-developed granular structure in the A2 horizon of E-UF. Granules include pumice stone and large amounts of excrements. b Subangular blocky structure in the Ap3 horizon of E-CF. c Spongy structure with channels in the 3AB horizon of E-UF. d Subangular blocky structure with strongly weathered pumice stone in the 4Bw horizon of E-CF

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