Table 1.
Grain yield at 15 WAG and N2O Cumulative (3 WAG and 5 WAG) of maize cultivars under different N-supply conditions.
| Variety |
Grain yield (kg per m2) |
N₂O cumulative (μg N m−2h−1) |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N1 | N3 | N1 | N3 | |||||||||||||
| Bisma | 2.120 | ± | 0.040 | 2.240 | ± | 0.073 | 3.488 | ± | 2.602 | 9.682 | ± | 4.028 | ||||
| Sukmaraga | 1.560 | ± | 0.000 | *** | 1.680 | ± | 0.000 | *** | 8.448 | ± | 1.411 | ** | 19.798 | ± | 3.496 | ** |
| Anoman | 0.880 | ± | 0.000 | ** | 0.720 | ± | 0.000 | ** | 21.430 | ± | 5.243 | 16.470 | ± | 0.406 | ||
| Pulut URI | 0.680 | ± | 0.000 | 0.640 | ± | 0.040 | 5.177 | ± | 0.260 | *** | 8.515 | ± | 0.056 | *** | ||
| Lamuru | 0.680 | ± | 0.000 | * | 0.940 | ± | 0.100 | * | 4.819 | ± | 1.710 | ** | 15.150 | ± | 1.792 | ** |
| Provit A1 | 0.440 | ± | 0.000 | *** | 1.440 | ± | 0.000 | *** | 3.986 | ± | 1.053 | *** | 13.004 | ± | 0.237 | *** |
| Srikandi Putih | 0.520 | ± | 0.000 | *** | 0.400 | ± | 0.000 | *** | 0.080 | ± | 0.001 | * | 3.491 | ± | 1.360 | * |
| Arjuna | 0.760 | ± | 0.016 | ** | 0.520 | ± | 0.040 | ** | 17.464 | ± | 0.688 | *** | 11.623 | ± | 0.409 | *** |
| Bima 10 | 3.067 | ± | 0.463 | 2.360 | ± | 0.069 | 20.674 | ± | 0.594 | ** | 14.336 | ± | 0.547 | ** | ||
| Dale Lei | 0.400 | ± | 0.000 | *** | 1.600 | ± | 0.000 | *** | 15.399 | ± | 3.298 | * | 6.925 | ± | 1.197 | * |
| Guluk-guluk | 1.020 | ± | 0.060 | 0.960 | ± | 0.000 | 14.953 | ± | 3.896 | 15.769 | ± | 1.975 | ||||
| Manding | 0.960 | ± | 0.000 | *** | 0.360 | ± | 0.000 | *** | 14.202 | ± | 4.769 | 14.195 | ± | 0.720 | ||
| Talango | 0.000 | ± | 0.000 | 0.000 | ± | 0.000 | 4.559 | ± | 0.000 | 1.653 | ± | 1.039 | ||||
| Lokal Poso | 1.040 | ± | 0.000 | ** | 0.000 | ± | 0.000 | ** | 9.095 | ± | 7.434 | 1.713 | ± | 1.230 | ||
| Pioneer 35 | 2.272 | ± | 0.153 | 2.453 | ± | 0.027 | 4.935 | ± | 2.526 | ** | 13.460 | ± | 1.269 | ** | ||
| Pioneer 36 | 2.060 | ± | 0.151 | 2.080 | ± | 0.000 | 13.849 | ± | 0.777 | * | 11.301 | ± | 0.000 | * | ||
| Pioneer 21 | 1.013 | ± | 0.035 | 1.180 | ± | 0.020 | 6.509 | ± | 0.409 | * | 12.584 | ± | 2.165 | * | ||
| Pioneer 27 | 1.080 | ± | 0.061 | 1.010 | ± | 0.122 | 7.798 | ± | 0.803 | *** | 0.209 | ± | 0.006 | *** | ||
| Bisi 2 | 2.240 | ± | 0.080 | 1.880 | ± | 0.052 | 5.723 | ± | 0.097 | *** | 0.519 | ± | 0.086 | *** | ||
| Bisi 220 | 2.027 | ± | 0.071 | 2.128 | ± | 0.219 | 6.548 | ± | 0.229 | 10.846 | ± | 2.744 | ||||
| Bisi 228 | 2.256 | ± | 0.117 | 2.613 | ± | 0.301 | 3.387 | ± | 0.529 | 2.182 | ± | 0.529 | ||||
| Bisi 226 | 1.160 | ± | 0.040 | * | 1.747 | ± | 0.093 | * | 0.000 | ± | 0.000 | * | 4.399 | ± | 2.309 | * |
| Bisi 18 | 1.888 | ± | 0.163 | 2.620 | ± | 0.038 | 4.447 | ± | 3.415 | 6.833 | ± | 1.566 | ||||
| Bisi 99 | 2.896 | ± | 0.230 | 2.260 | ± | 0.280 | 3.791 | ± | 3.584 | 3.245 | ± | 2.231 | ||||
| Bisi 79 | 2.187 | ± | 0.792 | 3.547 | ± | 0.334 | 16.913 | ± | 5.167 | 15.063 | ± | 2.804 | ||||
| NK 33 | 2.853 | ± | 0.116 | * | 1.360 | ± | 0.076 | * | 24.108 | ± | 1.968 | ** | 9.501 | ± | 2.347 | ** |
| NK 6172 | 1.020 | ± | 0.140 | ** | 0.947 | ± | 0.013 | ** | 8.492 | ± | 0.409 | * | 6.672 | ± | 0.854 | * |
| NK 7202 | 2.040 | ± | 0.106 | 1.787 | ± | 0.301 | 0.000 | ± | 0.000 | ** | 2.870 | ± | 0.859 | ** | ||
| NK 007 | 1.387 | ± | 0.035 | 0.960 | ± | 0.186 | 16.172 | ± | 4.397 | 15.865 | ± | 1.401 | ||||
| Pertiwi 3 | 1.390 | ± | 0.104 | * | 1.320 | ± | 0.037 | * | 21.017 | ± | 11.54 | 15.195 | ± | 1.523 | ||
N1 and N3 indicate 57.5 kg N/ha of soil (normal-N) and 173 kg N/ha of soil (high-N), respectively.
Data are means ± SE (n = 3). *, **, and *** means significant differences at P < 0.5, P < 0.01, and P < 0.001, respectively, according to Student t-Test between N1 and N3.