Table 1.
Physical and chemical attributes of soil fertility in the depth of 0-0.40 m in the experimental area before passion fruit cultivation.
| Physical Attributes | Chemical Attributes | ||
|---|---|---|---|
| Coarse Sand (g kg−1) | 602 | pH in water (1:2.5) | 5.37 |
| Fine Sand (g kg−1) | 194 | SOM (g dm−3) | 4 |
| Silt (g kg−1) | 132 | P–Rem (mg dm−3) | 45.6 |
| Clay (g kg−1) | 72 | P (mg dm−3) | 5.5 |
| Dispersed clay (g kg−1) | 10.5 | S (mg dm−3) | 6.55 |
| Bulk density (kg dm−3) | 1.54 | K+ (cmolc dm−3) | 0.13 |
| Particle density (kg dm−3) | 2.77 | Ca2+ (cmolc dm−3) | 1.18 |
| Total porosity (%) | 44.5 | Mg2+(cmolc dm−3) | 0.37 |
| Degree of flocculation (%) | 86 | Na+ (cmolc dm−3) | Dash |
| Dispersion index (%) | 14 | SB (cmolc dm−3) | 1.68 |
| Flocculation/dispersion ratio | 7.75 | H+ + Al3+ (cmolc dm−3) | 1.8 |
| Field capacity (%-v) * | 8 | Al3+ (cmolc dm−3) | 0.18 |
| Wilting point (%-v) ** | 3.75 | CEC (cmolc dm−3) | 3.48 |
| Available water (%-v) | 4.25 | V (%) | 47.85 |
| Textural class | Sandy loam | Fertility class | Eutrophic |
* Water retention at 0.01 MPa; ** water retention at 1.50 MPa; SOM = soil organic matter; SB = sum of exchangeable soil bases (SB = K+ + Ca2+ + Mg2+); CEC = cation exchange capacity of soil (SB + (H+ + Al3+); V(%) = saturation by exchangeable soil bases [(SB/CEC) × 100]. Extractors: SOM—Walkley-Black; P-Rem = Remaining phosphorus—CaCl2—0.01 mol L−1; P, K+, Na+—Mehlich 1; Ca2+, Mg2+, e Al3+—KCl—1 mol L−1; S = Sulfur—Acetic Acid—2 mol L−1; H+ + Al3+= potential acidity—calcium acetate 0.5 mol L−1—pH 7.0.