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A water supply deemed adequate in quality and quantity is a critical factor in the maintenance and development of agriculture. Rainfall occurrence has influenced the distribution of native vegetation and regional selection of crops on the Western Prairies. Annual precipitation de creases in a westerly direction be ginning at Winnipeg, Manitoba, with an average of 19.8 inches to an aver age of 12.8 inches at Medicine Hat, Alberta. An important and fortunate feature of Prairie climate is that most of the annual precipitation is received during the summer months and at a time when it is in greatest demand for crop growth. Drought cycles frequently experienced in these areas result in serious economic reversals to agriculture and thus water conservation measures are of general concern. The demand for water has given rise to the well known Prairie Farm Rehabilitation Administration programs to store water in dams and dugouts for irrigation, livestock watering and other domestic uses.
an evaluation of five application methods for applying evaporation suppressants to the surface of small water storages
Lapp, H. M. 1968. AN EVALUATION OF FIVE APPLICATION METHODS FOR APPLYING EVAPORATION SUPPRESSANTS TO THE SURFACE OF SMALL WATER STORAGES. Canadian Agricultural Engineering 10(1):17-22.
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