Phylloxeridae का जीनस टाइप करें: प्लांट जूँ

phylloxera's Usage Examples:

The diseased roots have been confounded with those attacked by Phylloxera.

Like the Phylloxera (q.v.; also Wine), the mildew is in its origin probably American.

Some of the American varieties have been introduced into France and other countries infested with Phylloxera, to serve as stocks on which to graft the better kinds of European vines, because their roots, though perhaps equally subject to the attacks of the insects, do not suffer so much injury from them as the European species.

The root of the French vine is attacked by the Phylloxera, but that of the American vine, whose epidermis is thicker, is protected from it.

The vineyards of Hungary, which have suffered greatly by the phylloxera since 1881, show since 1900 a tendency to recover ground, and their area is again slowly increasing.

Their food consists mainly of the sap obtained from the leaves and blossom of plants, but some also live on the roots of plants (Phylloxera vastatrix and Schizoneura lanigera).

The estimated loss by the vine Phylloxera in the Gironde alone was £32,000,000; for all the French wine districts £IOO,000,000 would not cover the damage.

White or grey spots may be due to Peronospora, Erysiphe, Cystopus, Entyloma and other Fungi, the mycelium of which will be detected in the discoloured area; or they may be scale insects, or the results of punctures by Red-spider, 'c. Yellow spots, and especially bright orange spots, commonly indicate Rust Fungi or other Uredineae; but Phyllosticta, Exoascus, Clasterosporium, Synchytrium, 'c., also induce similar symptoms. Certain Aphides, Red-spider, Phylloxera and other insects also betray their presence by such spots.

They may occur on all parts, buds, leaves, stems or roots, as shown by the numerous species of Cynips on oak, Phylloxera on vines, 'c. The local damage is small, - but the general injury to assimilation, absorption and other functions, may be important if the numbers increase.

The closing of the French market to Sicilian produce, the devastation wrought by the phylloxera and the decrease of the sulphur trade had combined to produce in Sicily a discontent of which Socialist agitators took advantage to organize the workmen of the towns and the peasants of the country into groups known as fasci.

phylloxera's Meaning':

type genus of the Phylloxeridae: plant lice