Table 4: The effects of reclaimed wastewater on rice paddy filed management and crop growth.
| Property |
Unit |
FW |
WW |
t |
P value†
|
Difference |
| Farm area |
ha |
2.11 |
2.03 |
0.42 |
0.677 |
+0.08 |
| Used seed for planting |
Kg.ha-1
|
123.75 |
122.25 |
0.48 |
0.634 |
+1.50 |
| Planting date (from May) |
day |
3.90 |
2.05 |
0.676 |
0.503 |
+1.85 |
| Harvesting date (from August) |
day |
6.31 |
8.11 |
-1.088 |
0.283 |
-1.80 |
| Season length* |
day |
95.4 |
99.05 |
-1.826 |
0.076 |
-3.65 |
| N fertilizer** |
Kg.ha-1
|
92.50 |
71.25 |
2.239 |
0.031 |
+21.25 |
| P fertilizer** |
Kg.ha-1
|
130.02 |
101.26 |
2.286 |
0.028 |
+28.74 |
| K fertilizer |
Kg.ha-1
|
25.1 |
20.1 |
0.623 |
0.537 |
+5.0 |
| Plant height |
cm |
125.41 |
119.55 |
1.183 |
0.244 |
+5.86 |
| Spike length |
cm |
27.66 |
27.62 |
0.53 |
0.958 |
+0.04 |
| Seed per spike** |
number |
58.10 |
65.30 |
-2.033 |
0.049 |
-7.20 |
| 1000-seed weight |
gr |
25.25 |
24.91 |
0.883 |
0.383 |
+0.34 |
| Seed yield* |
gr per plant |
1.453 |
1.601 |
-1.801 |
0.080 |
-0.148 |
| Biological yield |
gr per plant |
2.919 |
2.883 |
0.222 |
0.825 |
+0.036 |
| Harvested index |
percent |
51.25 |
58.50 |
-1.319 |
0.195 |
-7.25 |
† Significant value for t test based on freedom degree of 38 and statistical levels of 1, 5 and 10 percent are 2.709, 2.025 and 1.687, respectively.
* and ** are significantly affected by water treatment based on t test at 10 and 5%, respectively.