. Forest protection and conservation in Maine, 1919. Forests and forestry. â¢â w- ,. SPRUCE BUDWORM AND WHITE PINE WEEVIL 155 ally attack other species of pine such as the jack pine i Pinus banksiana Lamb) and true pitch pine (Pinus ex- c els a Link.) Plantations o f Norway spruce, especially, are often subject to great damageâ second only to white pine in this respect. Young trees from 4 to 20 feet in height, are most subject to attack, al- though less com- monly pines well over thirty feet high may be in- jured by the wee- vil. It also shows a decided prefer- ence for trees growing in plan-
. Forest protection and conservation in Maine, 1919. Forests and forestry. â¢â w- ,. SPRUCE BUDWORM AND WHITE PINE WEEVIL 155 ally attack other species of pine such as the jack pine i Pinus banksiana Lamb) and true pitch pine (Pinus ex- c els a Link.) Plantations o f Norway spruce, especially, are often subject to great damageâ second only to white pine in this respect. Young trees from 4 to 20 feet in height, are most subject to attack, al- though less com- monly pines well over thirty feet high may be in- jured by the wee- vil. It also shows a decided prefer- ence for trees growing in plan- tations or in open stands. Thus it is that the most noticeable dam- age usually occurs in pure plantations of white pine or Norway spruce or in the younger volunteer growth in pastures, along the borders of woodlands or along roadsides. Where white pine occurs under cover in woodlots it is nearly exempt from attack and injury. METHODS OF CONTROL. The white pine weevil is best controlled by removing the infested leaders and so treating them as to destroy the contained grubs and young beetles before they have an opportunity to emerge and escape. This is most easily accom- plished by burning, and should be done before July 1st. By this. Load of Logs and Lumberjacks. Photo by C. W. 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 Maine. Forest Commissioner; Colby, Forrest H. [Lewiston, Me. , Journal Printshop and Bindery]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
