Influence of grain growing on the nitrogen and organic matter content of the Western Prairie soils of Canada
Canada's western prairies, lying within the confines of the provinces of Manitoba, Saskatchewan and Alberta, are generally recognized as comprising one of the largest and most important agricultural areas on the American continent. The immense acreage of their arable lands, the great depth and high fertility of their soils and the unexcelled quality of their wheat, have made them widely and favourably known throughout the civilized world. As yet but sparsely settled, they will for many years offer a large and attractive field for agricultural occupation and development. Though as a grain-growing region the beginning of settlement does not date further back than the early eighties, so marked has been the development, more especially within the past twenty-five years, that last year, 1923, the three provinces produced over 450,000,000 bushels of wheat, nearly 392,000,000 bushels of oats, about 60,000,000 bushels of barley, nearly 21,000,000 bushels of rye and 7,000,000 bushels of flaxseed. When it is stated that of the estimated 167,000,000 acres1 of arable and productive land within their limits less than 40,000,000 acres as yet are under field crops, it will be unnecessary to emphasize further the wonderful heritage, the almost invaluable asset, that Canada possesses in her northwestern prairies.