The practical fruit grower . Fig. 66. and leg of the same; e,f, g, matured lice. In Fig 67, a, is ahealthy root; b, a root on which the lice are working; c, a root. Fig. 67. DISEASES OF THE GRAPE. 83 which they have ravaged and deserted, and which is decaying;d, d, d, lice on large roots; e,-the female pupa, seen from above;/, female pupa, seen from below; g, winged female, dorsal view;h, the same, ventral view; i, antenna of the winged insect. While the insect is almost always found upon our native vinesin large numbers, especially the root form, their vigor of growthseems to overcome its att
The practical fruit grower . Fig. 66. and leg of the same; e,f, g, matured lice. In Fig 67, a, is ahealthy root; b, a root on which the lice are working; c, a root. Fig. 67. DISEASES OF THE GRAPE. 83 which they have ravaged and deserted, and which is decaying;d, d, d, lice on large roots; e,-the female pupa, seen from above;/, female pupa, seen from below; g, winged female, dorsal view;h, the same, ventral view; i, antenna of the winged insect. While the insect is almost always found upon our native vinesin large numbers, especially the root form, their vigor of growthseems to overcome its attack, and no permanent injury remedy has been successfully applied. Diseases.—Varieties that have originated from the Europeangrape, wholly or in part, are often subject to the mildew, as arealso native varieties under certain conditions. It is a fungusparasite that grows in the tissue of the leaf, destroying it bypenetrating the cell wall and feeding upon the food prepared forthe nourishment of the vine. When mature, the fruit of themildew fungi is borne upon stalks that come out of the breathingpores of the leaves, and appear in such numbers as
Size: 1690px × 1479px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidp, booksubjectfruitculture
