. The care of trees in lawn, street and park, with a list of trees and shrubs for decorative use. Trees; Trees. Growth and Form Development 15. tips of the roots to the tips of the crown with all its ramification of branches, consists of very loose, thin-walled cell tissues; hence it affords an easy pathway for the growth of the mycelium of wood-destroying fungi. It is along this line of least resistance that the most rapid progress of rot is made, and hence there is need for particular attention to the branch wounds where the fungus enters. The root system develops in a manner somewhat simila
. The care of trees in lawn, street and park, with a list of trees and shrubs for decorative use. Trees; Trees. Growth and Form Development 15. tips of the roots to the tips of the crown with all its ramification of branches, consists of very loose, thin-walled cell tissues; hence it affords an easy pathway for the growth of the mycelium of wood-destroying fungi. It is along this line of least resistance that the most rapid progress of rot is made, and hence there is need for particular attention to the branch wounds where the fungus enters. The root system develops in a manner somewhat similar to the crown, lengthening and ramifying by annual additions and increas- ing in diameter by division and growth of cambium cells. There are, however, differences in devel- opment, due, no doubt, to the difference of the medium in which the roots live. The soil offering more resistance than the air, the ramifications are less regular. Instead of having more or less systematically arranged buds from which new roots may form, irregular growing points may arise on any part of the root where the bark is not too resistant, thus pro- ducing the new growth- The root system is therefore less regular, less symmetrical than the crown system. Never- theless, as we recognize typical forms of crowns like that of the conical conifer, the spreading oak, the vase-shaped elm, so there are typical root systems, which fact has more bearing upon the form of ornamental and shade trees, than is usually recognized. Although the root systems of most trees are very adaptive, there is a limit to the adaptation, and, as the trees grow older, the difficulty of adaptation grows greater, and shows Fig 7. — Method^of formation of adventitious branches from the growth of dormant 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 Fer
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
