Research Article
Influence of Tropical Climate Parameters on Properties of Acid Sulfate Soils for Sustainable Oil Palm Cultivation
Table 6
Physical properties of acid sulfate soils under oil palm planting areas in Central Plain and Southeast Coast.
| | Physical propertya (Unit) | Central Plain | Southeast Coast | | Topsoilb | Subsoil-1c | Subsoil-2d | Rootzone | Topsoilb | Subsoil-1c | Subsoil-2d | Rootzone | | Median (range) | Median (range) | Median (range) | Median (range) | Median (range) | Median (range) | Median (range) | Median (range) | | n = 10 | n = 10 | n = 10 | n = 30 | n = 10 | n = 10 | n = 10 | n = 30 |
| | Sand (g·kg−1) | 35.50 (15–70) | 25.00 (9–125) | 36.00 (11–112) | 33.00 (9–125) | 346.00 (81–524) | 223.50 (80–564) | 262.00 (66–576) | 292.00 (66–576) | | Silt (g·kg−1) | 304.50 (269–404) | 292.50 (265–423) | 282.50 (253–482) | 296.00 (253–482) | 385.00 (254–464) | 377.50 (251–554) | 387.00 (297–472) | 387.00 (251–554) | | Clay (g·kg−1) | 666.00 (526–704) | 681.00 (553–712) | 666.50 (489–708) | 674.50 (489–712) | 292.50 (76–531) | 288.50 (74–574) | 3560 (79–493) | 313.50 (74–574) | | AWC (mm) | 26.06 (24.32–29.58) | 25.38 (24.12–30.96) | 25.26 (23.05–33.32) | 25.54 (23.05–33.32) | 25.36 (18.20–31.90) | 27.33 (17.08–35.34) | 27.23 (20.23–31.15) | 26.51 (17.08–35.34) |
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aAWC = available water capacity. b,c,dTopsoil = Ap; Subsoil-1 = Ap–60 cm; Subsoil-2 = 60–100 cm; Rootzone = top 100 cm.
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