. A textbook of botany for colleges and universities ... Botany. S02 ECOLOGY root is removed. The change in the general form of the root system is equally noteworthy, since the large tap root is replaced by a complex of much-branched roots of about equal size (figs. 708, 709). Such a change in form usually occurs when plants { celery or cab- bage) are transplanted, since the growing tip of the tap root commonly is destroyed in the process. Apart from the prevention of overcrowding, transplanting may be of economic advantage, since the shallow and compact root system thus produced is better
. A textbook of botany for colleges and universities ... Botany. S02 ECOLOGY root is removed. The change in the general form of the root system is equally noteworthy, since the large tap root is replaced by a complex of much-branched roots of about equal size (figs. 708, 709). Such a change in form usually occurs when plants { celery or cab- bage) are transplanted, since the growing tip of the tap root commonly is destroyed in the process. Apart from the prevention of overcrowding, transplanting may be of economic advantage, since the shallow and compact root system thus produced is better. Figs. 713, 714. — A branch of the India-rubber tree (Picus elaslica), illustrating a method of inducing the development of adventitious roots to facilitate artificial propa- gation; an incision is made in the stem, which then is wrapped in wet moss (713): shortly, roots develop at the cut surface (714); note the fall of the sheathing stipule (j) in 714. fitted to utilize commercial fertilizers, which, for the most part, remain in the super- ficial soil layers; furthermore, the removal of roots from the soil is facilitated. Nursery trees thrive better than native trees when transplanted, chiefly because a compact root system is developed by frequent transplanting ; if a tap root is allowed to grow to a considerable depth, successful transplanting becomes difficult. Such plants as are used for their roots { parsnips and carrots) rarely are transplanted, since the process usually destroys the very parts desired ; however, when care is exercised in removing seedlings from the ground, the tap root in some cases con-. 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
