Vastatrix sentence example
- The vine has been attacked by the Oidium Tuckeri, the Phylloxera vastatrix and the Peronospora viticola, which in rapid succession wrought great havoc in Italian vineyards.
- 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 following full description of the only species which attacks the vine, the Phylloxera vastatrix, or grape-louse, is reprinted from the article Vine in the 9th edition of this encyclopaedia.
- In 1868 Planchon proved that the disease was due to a new species of phylloxera, which was invariably found on the roots of the affected vines, and to which he accordingly gave the prophetic name of Phylloxera vastatrix.
- During the next ten years a series of students, of whom only Riley and Balbiani need be mentioned here, worked out the natural history of Phylloxera vastatrix, and proved its identity with the American grape-louse.Advertisement
- As regards their geographical distribution, fungi, like flowering plants, have no doubt their centres of origin and of dispersal; but we must not forget that every exchange of wood, wheat, fruits, plants, animals, or other commodities involves transmission of fungi from one country to another; while the migrations of birds and other animals, currents of air and water, and so forth, are particularly efficacious in transmitting these minute organisms. Against this, of course, it may be argued that parasitic forms can only go where their hosts grow, as is proved to be the case by records concerning the introduction of Puccinia malvacearum, Peronospora viticola, Hemileia vastatrix, &c. Some fungi - e.g.
- The Phylloxera vastatrix is an insect belonging to the green fly tribe, which destroys the roots and leaves of the growing plant by forming galls and nodosities.
- The bush vines of this region are more exposed to the attacks of Oidium Tuckeri, which invaded the country in 1851, and of Phylloxera vastatrix, which followed in 1863, than the more deeply-rooted vines trained on trellises or trees.
- Closely related to the typical aphides is Phylloxera vastatrix, the insect which causes enormous loss by attacking the leaves and roots of vines.