. Botany for agricultural students . Botany. GRAFTING 227. his sorrow, the farmer helps bad weeds, such as Quack Grass and Marsh Smartweed {Polygonum Muhlenbergii), to spread by scat- tering portions of their underground stems while putting in and cultivating crops. Cuttings, known as hard-wood cuttings, are commonly employed in propagating such woody plants as the Grape, Currant, Goose- berry, Willows, Poplars, and many ornamental shrubs. They may be made in different ways as shown in Figure 211, but in each case they must have at least one bud. Layering. — A layer is a branch which is put in
. Botany for agricultural students . Botany. GRAFTING 227. his sorrow, the farmer helps bad weeds, such as Quack Grass and Marsh Smartweed {Polygonum Muhlenbergii), to spread by scat- tering portions of their underground stems while putting in and cultivating crops. Cuttings, known as hard-wood cuttings, are commonly employed in propagating such woody plants as the Grape, Currant, Goose- berry, Willows, Poplars, and many ornamental shrubs. They may be made in different ways as shown in Figure 211, but in each case they must have at least one bud. Layering. — A layer is a branch which is put in contact with the soil and induced to develop roots and branches while still in contact with the parent plant. After a layer has developed roots and Fig. 208. — The Life Plant {BryophyUum branches, it is separated calydnum) developmg young plants on the . , ^ , , margins of the leaves. About one-half natu- from the parent and be- ^.^^ gj^g comes an independent plant. There are different methods of layering, but usually the branches are bent to the ground and covered with dirt. In layering Grapes, a vine is stretched along in a shallow trench and buried throughout its entire length as shown in Figure 212. Raspberries and many shrubs are propagated by layering. Grafting. — Grafting is the common method used in propa- gating fruit trees, and consists in so joining parts of different plants that they unite their tissues and live together as one plant. In grafting there are two members involved, the stock and don or scion. The stock, which may be a root, stump, or almost the entire shoot, is the member which remains in contact with the soil, while the cion is the portion of a shoot, usually a twig or branch, which is to be made to grow on the stock. Since only growing tissues, such as the cambiums, are able to unite and heal wounds, it is necessary in grafting to have the cambiums of the stock and cion so adjusted that they can become grown together and thus. Please note that
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
