Table 4 Mean and Standard Error (SE) of physicochemical conditions of water samples taken from paddies with different rice stage
Rice stage | Land preparation | Transplanting | Tillering |
|---|---|---|---|
Temperature | 22.8 ± 0.87 | 24.25 ± 1.07 | 24.22 ± 0.70 |
Conductivity (ms/cm) | 301.5 ± 45.11 | 317.20 ± 60.30 | 178.72 ± 15.45 |
Salinity (ppta) | 319.54 ± 23.01 | 240.44 ± 45.07 | 159.52 ± 18.32 |
DOb (%) | 0.2 ± 0.01 | 64.92 ± 14.04 | 91.89 ± 13.71 |
pH | 7.86 ± 0.15 | 7.85 ± 0.10 | 7.61 ± 0.06 |
Nitrate (mg/l) | 13.6 ± 3.44 | 25.9 ± 4.99 | 12.64 ± 5.09 |
Sulphate (mg/l) | 80 ± 5.25 | 54.4 ± 11.00 | 68.22 ± 28.59 |
Nitrogen Ammonia (mg/l) | 0.01 ± 0.001 | 4.1 ± 0.080 | 0.14 ± 0.02 |