. The water-relation between plant and soil. Plants; Soil moisture. 42 [water-relation between plant and soil. transpiring power {t-i-e). The February graph of this feature shows its maximum () with hour 14, the same hour as occurs the maximum of absolute transpiration. The period of low night values extends from hour 17 to hour 6, its aver-. Fio. 3.—Graphs for Pelargonium. age value being and the ratio of the maximum to this being| The March graph exhibits its maximum () with hour 12, also at the same hour as occurs the maximum for absolute transpiration. The March night peri
. The water-relation between plant and soil. Plants; Soil moisture. 42 [water-relation between plant and soil. transpiring power {t-i-e). The February graph of this feature shows its maximum () with hour 14, the same hour as occurs the maximum of absolute transpiration. The period of low night values extends from hour 17 to hour 6, its aver-. Fio. 3.—Graphs for Pelargonium. age value being and the ratio of the maximum to this being| The March graph exhibits its maximum () with hour 12, also at the same hour as occurs the maximum for absolute transpiration. The March night period extends from hour 16 to hour 6, with an average value of The maximum is times this average. This March graph bears evidence of some incipient drying of the leaves about noon, thus agreeing with the corresponding graph of absolute 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 Livingston, Burton Edward, 1875-; Hawkins, Lon Adrian, 1880-; Pulling, Howard Edward. Washington, D. C. , Carnegie Institution of Washington
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1915
