. Development and activities of roots of crop plants; a study in crop ecology. Roots (Botany); Plant ecology; Crops and climate. 12 Development and Activities of Roots of Crop Plants. height of about 3 feet. The mature root system bore a strong resemblance in form to that found at the last examination. It was characterized by the large number of deeply penetrating roots. Some of these ran almost verti- cally downward from the base of the plant, while others went out obliquely to a distance as great as 12 inches and then turned downward with a gradual. Fig. 2. -A. University No. 21 oats at matu
. Development and activities of roots of crop plants; a study in crop ecology. Roots (Botany); Plant ecology; Crops and climate. 12 Development and Activities of Roots of Crop Plants. height of about 3 feet. The mature root system bore a strong resemblance in form to that found at the last examination. It was characterized by the large number of deeply penetrating roots. Some of these ran almost verti- cally downward from the base of the plant, while others went out obliquely to a distance as great as 12 inches and then turned downward with a gradual. Fig. 2. -A. University No. 21 oats at maturity. B. Swedish Select oats at maturity. curve. Other roots took positions intermediate to these extremes (fig. 2 b). The number of these deeper roots varied from 7 to 11. They pursued a rather tortuous course. The usual depth of penetration ranged from 2 to. 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 Weaver, John E. (John Ernest), 1884-1966; Jean, Frank Covert, 1880- joint author; Crist, John W. , joint author. Washington, Carnegie Institution of Washington
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectcropsan, bookyear1922
