. Canadian forestry journal. Forests and forestry -- Canada Periodicals. Shall We Have Another Outbreak?—Damage May Be Prevented by Allov^ing No Solid Stands of We are frequently asked what effect will the present outbreak of the Spruce Budworm have upon the status of the tree more particularly affected, namely the Balsam Fir. The outbreak in question is practically confined to part of the New Brunswick forest and it is to this area that the following remarks will apply. First of all, however, what is the Spruce Bud- worm? Many readers who have visited the New Brunswick woods during the
. Canadian forestry journal. Forests and forestry -- Canada Periodicals. Shall We Have Another Outbreak?—Damage May Be Prevented by Allov^ing No Solid Stands of We are frequently asked what effect will the present outbreak of the Spruce Budworm have upon the status of the tree more particularly affected, namely the Balsam Fir. The outbreak in question is practically confined to part of the New Brunswick forest and it is to this area that the following remarks will apply. First of all, however, what is the Spruce Bud- worm? Many readers who have visited the New Brunswick woods during the past few years will know that most of the fir boughs cut in June and early July have not been fit for making up a bough bed. They have been filled with cater- pillars which are those of the Spruce Budworm. Again some have seen in July areas of our for- est having the appearance of being scorched as if by a light fire; this appearance has been caused by the budworm caterpillars eating away the new needles, the remnants of which have turned brown. Some again will remember the clouds of little moths that accumulated around the arc lights of Fredericton and other cities toward the latter part of July in 1913 and 1914. The caterpillars of the boughs had become full fed and had turned into chrysalids and from the chrysalids had emerged the winged moths. The winter stage is less conspicuous. After pairing the female moth lays batches of green colored eggs on the needles of fir and spruce; the eggs hatch in August and the resulting caterpillars seek out a sheltered crevice in the bark; here they spin a silken case and spend the winter. In the following May the tiny caterpillars come out of their shelter and climb to the opening buds where they feed upon the new foliage. These tiny insects soon grow mto the cater- pillars of the boughs that we have already re- ferred to. The Degrees of Injury. So much then for the nature of the insect. As to what it does we have already noted that its
Size: 1379px × 1812px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcanadianforestryassociation, bookleafnumber312, booksp
