Table 2 Properties of TWW used for continuous sub-irrigation during the crop season.
Parameter | Unit | May | June | July | August | September | Mean |
|---|---|---|---|---|---|---|---|
pH | Â | 7.2 | 7.1 | 6.5 | 7.3 | 6.5 | 6.9 |
EC | dS m−1 | 0.7 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
DO | mg L−1 | 1.4 | 1.5 | 2.5 | 2.2 | 2.2 | 1.9 |
TOC | mg L−1 | 6.9 | 4.3 | 6.1 | 6.1 | 5.8 | 5.8 |
N | mg L−1 | 32 | 28 | 25 | 27 | 28 | 28 |
P | mg L−1 | 0.2 | 0.1 | 0.1 | 0.3 | 0.3 | 0.2 |
K | mg L−1 | 17.1 | 17.1 | 18.2 | 18.6 | 18.5 | 17.9 |