Research Article

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

Figure 4

Proportion of area covered by annual crops and summerfallow in Ecodistrict 849 (subhumid climatic zone) and Ecodistrict 794 (semiarid climatic zone) from 1961 to 2006.