. Climate and plant growth in certain vegetative associations. Growth (Plants); Crops and climate; Plant ecology. CLIMATE AND PLANT GROWTH. 19 the mountings were self-contained as devised by Distilled water was used, but in order further to insure accurate and compar- able readings, the spheres, after a month of exposure, were replaced by restandardized spheres. ^ In measuring the evaporation from a free water surface a gal- vanized-iron evaporating pan, 10 by 36 inches, of the Weather Bureau pattern, was used. The evaporation from this free water surface. AUGUST 191S White sphere Free
. Climate and plant growth in certain vegetative associations. Growth (Plants); Crops and climate; Plant ecology. CLIMATE AND PLANT GROWTH. 19 the mountings were self-contained as devised by Distilled water was used, but in order further to insure accurate and compar- able readings, the spheres, after a month of exposure, were replaced by restandardized spheres. ^ In measuring the evaporation from a free water surface a gal- vanized-iron evaporating pan, 10 by 36 inches, of the Weather Bureau pattern, was used. The evaporation from this free water surface. AUGUST 191S White sphere Free water surface *-•--Average daily wind t/e/oc/ty Fig. 7.—Evaporation from white sphere and from free water surface compared with average daily wind velocity. was recorded by means of a hook gauge, reading in hundredths of an inch. In order that the evaporation records obtained from the two types of instruments used might be compared directly, the porous spheres and the free water surface were placed at the same height, namely, 2J feet above the ground. 1 Shive, John W., An improved nonabsorbing porous cup atmometer. Plant World, Vol. 18, No. 2: 7-10. 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 Sampson, Arthur W. (Arthur William), 1884-1967. Washington, D. C. : U. S. Dept. of Agriculture
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectcropsandclimate
