Archive image from page 126 of Cyclopedia of American horticulture, comprising. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches cyclopediaofam01bail Year: 1900 ARIZONA sentative localities of southern Arizona, having the greatest horticultural possibilities, the average yearly rainfall is only 7 inches for the former and 3 for the latter. In general, the precipitation i
Archive image from page 126 of Cyclopedia of American horticulture, comprising. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches cyclopediaofam01bail Year: 1900 ARIZONA sentative localities of southern Arizona, having the greatest horticultural possibilities, the average yearly rainfall is only 7 inches for the former and 3 for the latter. In general, the precipitation is during two dis- tinct seasons. The heaviest, or summer rains, begin about the first of July and increase in frequency until August, the month of greatest precipitation during the year. The winter rains are at their maximum in Decem- ber. With the exception of infrequent intervals during the rainy season, dews are unknown and fogs are of rare occurrence. On the other hand, from experiments con- ducted at Tucson, the evaporation is about 78 inches per year, reaching the maximum of II to nearly 13 inches during the month of June. At Phoenix the mean temperature may range from ° to 66°F. in Jan. It steadily increases till July,when it may range from 72° to 107°. It then steadily declines until the next Jan. The corresponding ranges at Yuma are 42°-65° for Jan., and 77° to 106° for July. The variation ARIZONA 97 •- I- 142. Arizi The shaded parts show horticultural sections. There is also a horticultural seetiou about Yuma. in temperature from day to night is frequently, in sum- mer, from 25° to40° while in winter it is even greater. The annual range, however, is not so great as it is in the northern states. The intense heat and dryness of the atmosphere, with continuous sunshine and frequent scorching winds, not only draw the moisture in wonderful rapidity from irri- gated fields, but the foliae-e of cultivated plants, save those with firm leaves, protected b
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