Table 3.
Yield for DT and non-DT corn hybrids, yield advantage in absolute and relative terms averaged across plant densities at different macro-environments based on cropping season ET values.
| Macro-environments |
||||||||
|---|---|---|---|---|---|---|---|---|
| High ET | Medium ET | Low ET | ||||||
| Topeka, 2012; Tribune, 2013 | Hutchinson, 2013 | Scandia, 2012 | Scandia, 2013; Topeka, 2013 | |||||
| Irrigation regime (ET%) | 100 | 50 | 100 | 50 | 100 | 50 | 100 | 50 |
|
Grain yields, expressed in Mg ha-1 |
||||||||
| DT | 13.0 | 9.2 | 10.9a† | 10.6a | 11.0 | 9.7 | 12.8 | 10.6 |
| Non-DT | 12.6 | 8.6 | 10.0b | 10.3b | 10.8 | 8.7 | 12.9 | 10.4 |
| DT | 11.1a‡ | 10.8a | 10.4a | 11.7a | ||||
| Non-DT | 10.6b | 10.1b | 9.7b | 11.6a | ||||
| Yield Adv. for DT | 0.53 (5.0%) | 0.63 (6.2%) | 0.66 (6.7%) | 0.08 (0.7%) | ||||
†Means within an irrigation regime at Hutchinson, 2013 followed by the same letter are not different (P < 0.05). ‡Means within a column followed by the same letter are not different (P < 0.05).