Impact of Continuous Cropping on the Diurnal Range of Dew Point Temperature during the Foliar Expansion Period of Annual Crops on the Canadian Prairies

Table 3

Summary of the relationships between the annual summerfallow area (% of total ecodistrict area) and the seasonal average of range of dew point temperatures (°C) from the early morning minimum to the late morning maximum from 1961 to 2006. Bold faced values show the significant relationships, at the 0.05 level of significance.

Climatic zone	Precipitation regime	Slope		value	Degrees of freedom
Subhumid	Normal	−0.069	0.27	0.000	157
	Wet	−0.082	0.43	0.000	40
	Dry	−0.062	0.22	0.009	28
Semiarid	Normal	−0.008	0.02	0.042	180
	Wet	−0.016	0.04	0.111	60
	Dry	+0.010	0.04	0.260	34