. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 238 INSECTS INJURIOUS TO THE GRAPE. ates are also recommended; these are gradually decomposed in the soil and give off sulphuretted hydrogen and bisulphide of carbon. Carbolic acid mixed with water, in the propor- tion of one part of the acid to fifty or one hundred parts of water, has also been used with advantage, poured into two or three holes made around the base of each vine with an iron bar to the depth of a foot or more. Soot is also recommended to be strewed around the vines. It is stated th
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 238 INSECTS INJURIOUS TO THE GRAPE. ates are also recommended; these are gradually decomposed in the soil and give off sulphuretted hydrogen and bisulphide of carbon. Carbolic acid mixed with water, in the propor- tion of one part of the acid to fifty or one hundred parts of water, has also been used with advantage, poured into two or three holes made around the base of each vine with an iron bar to the depth of a foot or more. Soot is also recommended to be strewed around the vines. It is stated that the insect is less injurious to vines grown on sandy soil, also to those grown on lands impregnated with salt. Since large numbers of these insects, both winged and wingless, are known to crawl over the surface of the ground in August and September*, it has been suggested to sprinkle the ground about the vines at this period with quicklime, ashes, sulphur, salt, or other substances destructive to insect life. The application of fertilizers rich in potash and ammo- nia, such as ashes mixed with stable-manure or sal ammo- niac, has been found useful. A simple remedy for the gall- inhabiting type is to pluck the leaves as soon as the galls appear and destroy them. Several species of predaceous insects prey on this louse; A black species of Thrips with white-fringed wings (Thrips phylloxerse Riley, see Fig. 244) deposits its eggs within the gall, which when hatched produce larvae of a blood- i'M/lM^^^^ red color, which play sad havoc among the lice. The larva of a Syrphus fly, Pipiza radicurrij which feeds on the root-louse of the apple (see Fig. 2), has also been found attacking the Phylloxera. Another useful friend is a small mite {Tyroglyph\is phylloxerse P. & R., see Fig. 245), which devours the lice; and associated with Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and a
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
