. Circular. Agriculture; Agriculture -- United States. 6 CROPPING SYSTEMS FOR THE BLACK LANDS OF TEXAS. Isolated areas, varying from a few acres to many sections in extent, are found west of the Fort Worth prairie in Somervell, Erath, Bosque, Comanche, Brown, Hamilton, Mills, Coryell, Lampasas, Bell, Burnet, Llano, and other western counties. CLIMATE. The cHmate is typically southern. The summers are long and hot, wliile the winters are mild, with the exception of a few ''northers," which, because of their sudden appearance, are rather severe. The. Fig. 3.—Location of the black lands, sho
. Circular. Agriculture; Agriculture -- United States. 6 CROPPING SYSTEMS FOR THE BLACK LANDS OF TEXAS. Isolated areas, varying from a few acres to many sections in extent, are found west of the Fort Worth prairie in Somervell, Erath, Bosque, Comanche, Brown, Hamilton, Mills, Coryell, Lampasas, Bell, Burnet, Llano, and other western counties. CLIMATE. The cHmate is typically southern. The summers are long and hot, wliile the winters are mild, with the exception of a few ''northers," which, because of their sudden appearance, are rather severe. The. Fig. 3.—Location of the black lands, showing the precipitation during the crop-growing season (based upon records of the United States Weather Bureau covering the period from 1871 to 1908, inclusive). belt extends from the humid region of northeastern Texas to the arid region in old Mexico. Wind velocities increase from an annual hourly velocity of 7 or 8 miles in the northeastern to 10 or 12 miles per hour at the southwestern end of the belt. The mean annual temperature at Paris, in the northeast, is 64° F.; at San Antonio, in the southwest, 69° F. The usual crop-growing season extends fi'om about February 1 to October 31, depending upon the latitude. A close study of figures 2, 3, and 4 wall greatly facihtate an under- standing of farm problems in various parts of the black-land belt. It must be kept in mind, however, that a given amount of rainfall [Cir. 84]. 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 resemble the original United States. Bureau of Plant Industry. Washington, D. C. : U. S. Dept. of Agriculture, Bureau of Plant Industry
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