Research Article
Response of Soybean to Early-Season Planting Dates along the Upper Texas Gulf Coast
Table 5
Soil temperature (°C) at the 2.5 cm depth at planting in Calhoun County.
| | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | | Date | Temp. | Date | Temp. | Date | Temp. | Date | Temp. | Date | Temp. | Date | Temp. |
| | Feb. 22 | 22.4 | Feb 22 | 19.5 | Feb 21 | 19.3 | Feb 20 | 17.8 | Mar 17 | 19.2 | — | — | | March 14 | 19.0 | March 14 | 21.3 | March 26 | 22.7 | March 12 | 22.9 | Mar 25 | 23.0 | Mar 15 | 21.0 | | April 5 | 22.7 | April 5 | 25.8 | April 16 | 20.4 | April 2 | 24.7 | Apr 6 | 20.5 | Mar 29 | 19.9 | | April 26 | 23.4 | April 26 | 26.6 | April 30 | 24.4 | April 23 | 26.5 | Apr 21 | 24.5 | — | — |
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