. The book of the garden. Gardening. SULPHURATOR. contrived sulphurating machines—fig. 173, for example—affords a complete remedy, their ef- fects are less to be dreaded. The evaporating effects of long-continued easterly winds during spring are exceedingly injurious to the young expanding leaves of the apple; frequent syringing, to keep up the neces- sary humidity, has been resorted to with good effect; as has also protecting the opening buds by covering them with semi-transparent can- vass made in form of balloons, enclosing the whole tree, and secured round the stem to pre- vent the wind te
. The book of the garden. Gardening. SULPHURATOR. contrived sulphurating machines—fig. 173, for example—affords a complete remedy, their ef- fects are less to be dreaded. The evaporating effects of long-continued easterly winds during spring are exceedingly injurious to the young expanding leaves of the apple; frequent syringing, to keep up the neces- sary humidity, has been resorted to with good effect; as has also protecting the opening buds by covering them with semi-transparent can- vass made in form of balloons, enclosing the whole tree, and secured round the stem to pre- vent the wind tearing them to pieces. The dried haulm of asparagus, the dried fronds of fern, or similar dry and light material, tied to the branches in small handfuls, break the force of the wind, ward off late spring-frosts, and tend greatly to the preservation of the opening leaves and expanding blossom. Insects injurious to the apple.—Of these the American blight, woolly aphis, or apple bug (Aphis lanigera Linn., the Eriosoma mali of Leach, E. lanigera of others), fig. 174, is amongst the most serious. This insect appears to be in- digenous rather to France and the north of § AMERICAN BLIGHT INSECT. Winged male and wingless female. it was imported there along with trees from Europe. This insect frequently perforates the stem and branches of the apple, and causes those excrescences which are often seen on branches even of considerable age and size. Externally its existence is readily discovered by the appearance of a fine white down in the crevices of the older branches, and in some nurseries abounding on the wood of one or two years' growth, within which downy covering |lj a great number of minute woolly insects will be found, yielding, when bruised, a reddish matter somewhat similar to cochineal, which is the produce of another species of the same family. During summer this pest may be easily got rid of by washing the parts affected with a solution of sulphuric acid, in the proport
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
