Research Article
Response of Soybean to Early-Season Planting Dates along the Upper Texas Gulf Coast
Table 7
Yield response of soybean cultivars to different planting dates.
| Plant date | 2005 | 2006 | 2007 | 2008 | Maturity group | 4.6 | 5.1 | 5.1 | 5.4 | 4.8 | 5.1 | 5.9 | 4.9 | 5.0 | 5.1 | 5.4 |
| | Kg/ha | Feb. 20 | 1628 | 1197 | 464 | 706 | 1600 | 1971 | 2374 | 861 | 962 | 665 | 894 | Mar. 15 | 955 | 1789 | 894 | 901 | 1015 | 2501 | 2064 | 464 | 424 | 256 | 296 | Apr. 5 | 1137 | 1137 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Apr. 25 | 565 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | LSD (0.05) | 289 | 154 | 665 | 87 |
| Plant date | 2009 | 2010 | Maturity group | 4.9 | 5.0 | 5.1 | 5.4 | 5.9 | 4.8 | 4.9 | 5.0 | 5.1 | 5.4 | 5.9 |
| | Kg/ha | Feb. 20 | 1621 | 2186 | 1782 | 1930 | 1843 | — | — | — | — | — | — | Mar. 15 | 1406 | 1547 | 1204 | 1439 | 1311 | 2492 | 1897 | 3524 | 2145 | 2643 | 3605 | Apr. 5 | 773 | 232 | 410 | 336 | 491 | 2314 | 2885 | 3840 | 2603 | 3148 | 4008 | Apr. 25 | 27 | 0 | 0 | 0 | 0 | — | — | — | — | — | — | LSD (0.05) | 81 | 504 |
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