. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FARM ORGANIZATION IN SOUTHERN ARIZONA. 3 7 When the alfalfa fields have ceased to he profitable they arc plowed up and seeded to wheat or barley during the fall or winter months. The grain is harvested during the following May or early June. If the field is to be seeded to grain a second time, the land is irrigated and the stubble and volunteer young grain pastured during the re- mainder of the summer, or the field may be seeded to one of the grain sorghums, the lister being used for this purpose and only one or two cu
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FARM ORGANIZATION IN SOUTHERN ARIZONA. 3 7 When the alfalfa fields have ceased to he profitable they arc plowed up and seeded to wheat or barley during the fall or winter months. The grain is harvested during the following May or early June. If the field is to be seeded to grain a second time, the land is irrigated and the stubble and volunteer young grain pastured during the re- mainder of the summer, or the field may be seeded to one of the grain sorghums, the lister being used for this purpose and only one or two cultivations being given to the growing crop. When the second crop of barley or wheat is sown the land is at the same time reseeded to alfalfa. This is the nearest approach to a system of rotation in vogue in Arizona, and it is by no means a general practice. Opinions differ as to the value of the practice of seeding a grain sorghum crop during the summer upon the fields to be later seeded to. Fig. 11.—A thrifty grain field in Salt River Valley. wheat or barley. Some claim that the grain sorghum crop injures the land and reduces the yield of the succeeding crop of wheat or barley. Some landlords stipulate in their rental contracts that grain sorghums shall not be seeded during the summer months upon wheat or barley lands. Results obtained by the two systems of cropping are shown in Table XV. Table XV.—Effect of double cropping on success in grain farming in the irrigated valleys of southern Arizona, 1913-1915. Num- ber of farms. Aver- age area. Yield per acre. Receipts. Farm income. System of cropping. Wheat. Barley. Grain sor- ghums. Labor income. 18 27 Acres. 246 159 Pounds. 1,667 2,082 Pounds. 1,828 1,863 Pounds. 2,236 2,034 S6,239 4,316 S3,097 2,389 S839 Not double-cropped 280. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resem
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