Table 3.

Coefficients for slopes of linear regression equations relating mean soil temperature and residue coverage (n = 12).

Year	Residue type
	Maize	Soybean
2004	−0.0230 (0.0007)*	−0.0177 (0.0074)*
2005	−0.0101 (0.0103)	0.0208 (0.0109)
2006	−0.0293 (0.0075)*	−0.0057 (0.0081)
2007	−0.0220 (0.0036)*	−0.0112 (0.0044)*

Soil temperature in this analysis refers to the average soil temperature over the measurement period in each year of each plot.

Units of the slopes are degrees C per percent residue coverage

Slopes are followed by the standard error of the estimate

Slopes followed by an asterisk indicate that they are significant (P < 0.05).