Table 14 Initial physico-chemical properties of experimental soils.
Properties | Value | Method |
|---|---|---|
I. Physical properties | ||
1. Particle size analysis | 6.5 | |
Coarse sand (%) | 15.7 | International pipette method91 |
Fine sand (%) | 18.1 | |
Silt (%) | 59.3 | |
Clay (%) | 1.32 | |
2. Bulk density (Mg/m3) | 6.5 | Core sampler method92 |
3. Soil moisture holding capacity (0–30 cm depth) | 4.2 cm | Gravimetric method |
II. Chemical properties | ||
Electrical conductivity (dS/m) | 0.31 | EC bridge93 |
pH | 7.95 | 1: 2.5 soil: water suspension93 |
Organic carbon (%) | 0.43 | Walkley and Black's wet oxidation method93 |
Available N (kg/ha) | 161.50 | Alkaline permanganate method94 |
Available P2O5 (kg/ha) | 16.90 | 0.5 M NaHCO3 extractant, Olsen's method74 |
Available K2O (kg/ha) | 317.5 | Extraction with neutral normal NH40AC92. Flame photometer method95 |
DTP A extractible micronutrients (ppm) | ||
Cu | 1.18 | Extraction with DTPA reagent76 |
Fe | 4.06 | |
Mn | 12.20 | |
Zn | 0.23 | |
