. The principles of fruit-growing. Fruit-culture. Boot Troubles 351 he does not discover them in season. The various protec- tive washes which are ad- vised for keeping borers out of trees are of very doubtful efficiency. The roots of fruit trees and brambles are very likely to be affected with large tuber- like swellings or galls, which have been the subject of a good deal of uneasiness in various parts of the country. One of these is shown in Fig. 64. So far as known, these galls are not conta- gious, and the amount of harm which they do has probably been overstated. The root- knot of the so
. The principles of fruit-growing. Fruit-culture. Boot Troubles 351 he does not discover them in season. The various protec- tive washes which are ad- vised for keeping borers out of trees are of very doubtful efficiency. The roots of fruit trees and brambles are very likely to be affected with large tuber- like swellings or galls, which have been the subject of a good deal of uneasiness in various parts of the country. One of these is shown in Fig. 64. So far as known, these galls are not conta- gious, and the amount of harm which they do has probably been overstated. The root- knot of the southern states and of greenhouses is a wholly different trouble, and is the work of a nematode worm. There is also a root swelling or gall on raspber- ries, due to the work of an insect. The nematode galls are commonly smaller and softer swellings, and occur on the younger or smaller roots, Fif- M- Eo°' gal1 °" ""if'"*- b , ' (Prom Bull. 100, Cornell Exp. and appear not to occur in sta.). 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, Macmillan
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Keywords: ., bookaut, bookcentury1800, bookdecade1890, booksubjectfruitculture
