. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE GENUS DENDROCTONUS. 67 forest management, as also where there are regulations governing the time of year when the timber shall be cut, in both regular and irregu- lar operations, as well as the time when lightning-struck and other- wise injured trees shall be removed I HE? '"' i+ Mi J or barked. â¢'/â _â¢' fa ffw /mM METHODS OF CONTROL. In order effectually to destroy the insect, it is only necessary to remove the infested bark from the trunks and burn it. It is entirely unnecessary to burn or otherwise
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE GENUS DENDROCTONUS. 67 forest management, as also where there are regulations governing the time of year when the timber shall be cut, in both regular and irregu- lar operations, as well as the time when lightning-struck and other- wise injured trees shall be removed I HE? '"' i+ Mi J or barked. â¢'/â _â¢' fa ffw /mM METHODS OF CONTROL. In order effectually to destroy the insect, it is only necessary to remove the infested bark from the trunks and burn it. It is entirely unnecessary to burn or otherwise destroy any part of the wood from which the bark has been removed, because the destructive beetle does not enter the wood and rarely breeds in the bark of the tops and branches. With this particular species, however, it is necessary to burn the bark after or before it is removed, because the ma- tured larvae, pupse, and adults pass the winter in the outer dry bark, where they would otherwise survive and emerge in the spring, to attack other trees. In localities or areas of greater or less extent where it has been positively determined that the timber is attacked and killed by this beetle, the principal groups of trees which are actually in- fested with the broods should be located in the period from November to March, and the standing trees, including all of the larger ones, so infested should have the bark removed from the main trunks or be felled and barked, or the entire trunk scorched, burned, placed in water, or converted into lumber and the slabs burned, as in each case is more practicable or advisable. In the northern section this work should be begun not earlier than the 1st. Fig. 29.âThe southern pine beetle: Section of pine trunk, bark removed, showing the galleries marked on surface of wood and the dark patches caused by the blue- ing fungus. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
