. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 509. Pig. 1. The Fruit Tree Barl? Borer, a, caterpillar or borer from above : c, same from below ; b, adult motli—all enlarged. Delaware Experiment Station. The moths fly at night and are rarely seen. The wing expanse is about an inch. The head and body are dusky gray while the fore wings are a dusky gray with brownish-red and black m
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 509. Pig. 1. The Fruit Tree Barl? Borer, a, caterpillar or borer from above : c, same from below ; b, adult motli—all enlarged. Delaware Experiment Station. The moths fly at night and are rarely seen. The wing expanse is about an inch. The head and body are dusky gray while the fore wings are a dusky gray with brownish-red and black mark- ings. The hind wings are smoky. Eemedies The borers are most commonly found boring into wounds, cracks of the bark, cut ends of branches, etc. Such abrasions should, therefore, be cut as smooth as possible and then be well painted. Infested trees with loose and cracking bark should be well scraped during the winter, thus destroying many of the hibernating borers, as well as many other insects with similar habits (such as the codling moth). Trees with smooth bark are also less likely to be again attacked. The borers will not all be caught by scraping, however, and the trees should be carefully gone over and all borers cut out before May 1. Washing the trunks and lower branches of the trees with whale-oil soap or thick caustic soft soap, to which ha& been added one pint of crude carbolic acid to every ten gallons, which is used as a repellent against the apple tree borer beetle, may also prevent the moths from depositing their eggs on trees so treated. Such washes should be applied before the middle of May and will be of value in repelling other boring insects. Subsequently during the summer the borers should be cut out as often as ob- served, which can be easily and quickly done, as they never penetrate the sap- wood and their presence is usually no- ticeable by the borings thrown out at the surface of the bark. Bound-Headed Apple Tree Borer Saperda Candida Fabr. This
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