• Choose a colour
  • Report of Superintendent of Gypsy and Brown-tail Moth work.

    Author(s) : COLTON, W. W.

    Book : Ann. Rept. Park Commissioners. 1913 pp.25-36 pp.

    Abstract : The decrease by one-third in the number of gipsy moth nests found during 1913 is partly due to the spring and summer cleaning of all badly infested places, and the removal of old trees and other hiding places. Increased spraying and the introduction of parasites are additional reasons for the reduction. These measures seem to have produced a solution of the gipsy moth problem in the residential sections of towns and cities, but the woodland problem is yet to be solved. By the removal of trees most suitable for the moths, leaving only the most resistant species, much can be done. The following list applies only to forests and not to orchards or shade trees; in both lists preference should be given to the first-named, the later ones being interchangeable according to circumstances. To be removed: old fruit trees, red and choke cherries, white oaks, thorn apples, grey birch, willows, witch hazel, alder, hackberry, shadbush, hornbeam, hop hornbeam, black cherry, poplar, elm, mountain maple, and striped maple. To be retained: pine, spruce, hemlock, fir, cedar, juniper, larch, ash, hickory, basswood, sugar-maple, red maple, black and yellow birch, tupelo, sassafras, beech, white birch, black oak, chestnut and locust. This does not mean that trees in the second list will not be attacked at all, as practically all are eaten by the full-grown caterpillars. Experiments have proved, however, that the young caterpillar may be starved in the absence of the foliage of the trees in the first list.
    For combating the brown-tail moth, Euproctis chrysorrhoea, a new method was tried. During the winter the nests were removed from the trees as usual. This practice will probably have to be resorted to for years to come, but for the past two years experiments have been conducted with an autumn spraying, and during the summer of 1913 all street and roadside trees were sprayed. By December 1913, it was clear these operations were successful and would save much expense in the following season.

    Record Number : 19140501110

    Publisher : Fitchbury, Mass.

    Language of text : not specified

    Language of summary : not specified