Factor | 5 days after heading | 10 days after heading | 15 days after heading | 20 days after heading |
Maximum temperature | 0.620** | 0.448* | 0.493* | 0.379 |
Minimum temperature | 0.526* | 0.420 | 0.406 | 0.378 |
Average temperature | 0.524* | 0.366 | 0.496* | 0.408 |
Daily temperature difference | 0.616** | 0.428 | 0.448* | 0.439* |
Rainfall capacity | −0.079 | −0.340 | −0.425 | −0.390 |
Air humidity | −0.362 | −0.365 | −0.420 | −0.302 |
Solar radiation | 0.301 | −0.006 | 0.213 | 0.107 |