Fig. 3. Collage depicting apparatus for investigating the water requirement of plants (Briggs and Shantz, 1914, Plate II). (1) Lysimeters planted with sugar beets emerging through circular wax seals. (2) The weighing device and its crew of three, who could weigh lysimeters at the rate of 120 per hour. (3) Lysimeters used to study Colorado native plants, gumweed (left), and mountain sage.

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