Page 30 - World Reference Base for Soil Resources of Thailand
P. 30

Land Development Department Library




             Analytical data




              Horizon      pH          Clay (%)     Silt (%)     OC (%)      CEC       CEC       BSP (%)
                              water                                              s         c
                  A          5.0          8.6         5.8         0.45        6.3       73.4        84

                 BA          5.0          6.6         7.5         0.17        6.6      100.3        58

                Bw1          4.9         12.6         2.8         0.15        7.0       55.6        47

                Bw2          4.9         16.6         3.1         0.13        8.4      50.7         55

                 Bt          4.9         23.6         8.3         0.04        9.6      40.6         35







             Soil fertility





                                                                                                 Fertility
              Depth (cm)        OM           CEC            BS          Avai. P      Avai. K
                                                                                                  level


                  0-25          low          low         medium          low          low          low


                 25-50          low          low         medium          low          low          low

                50-100          low          low         medium          low          low          low



































                                                                                                      26
   25   26   27   28   29   30   31   32   33   34   35