. Plant propagation : greenhouse and nursery practice . Plant propagation. 2l6 PLANT PROPAGATION recently, all attempts to grow European grapes in America during more than 200 years resulted in failure. When American vines were taken to Europe, the insect practically ruined the grape industry, as it has since threatened to do in California. American grape stocks seem to be the only salvation. 281. Root-grafted, vs. budded trees.—For many j'ears fruit growers and nurserymen have discussed the relative advantages and disadvantages of whole root, vs. piece root vs. budded trees, largely without e
. Plant propagation : greenhouse and nursery practice . Plant propagation. 2l6 PLANT PROPAGATION recently, all attempts to grow European grapes in America during more than 200 years resulted in failure. When American vines were taken to Europe, the insect practically ruined the grape industry, as it has since threatened to do in California. American grape stocks seem to be the only salvation. 281. Root-grafted, vs. budded trees.—For many j'ears fruit growers and nurserymen have discussed the relative advantages and disadvantages of whole root, vs. piece root vs. budded trees, largely without experi- mental evidence. Arguments have mostly been generalized statements, only too often warped by individual preju- dice or pockctbook. Before summarizing the experiments recently published, some lead- ing o|)inions should be cited and n:etliO(ls outlined so the reader may cTioose what ap- peals to him. The following points must be borne in mind. Nursery budding upon spring-set stocks is dene during summer, but no grouth occurs till the follow- ing season (341). The stocks before being planted in the nursery are trimmed for obvious reasons. In whole-root grafting the cions are crown set and roots similarly trimmed. In piece-root graft- ing several bits of root are used, the top piece with a crown, the other pieces without any. These latter are, of course, smaller. Thus piece- root grafting creates a problem of its own because of the varying sizes and vigor of the pieces. Piece-root grafting may therefore be said to be unfairly pitted against both bucUling and whole-root graft- ing, which under equal conditions are equally valuable methods of propagation. Differences of growth characteristic of each method result from differences of stock trimming, not methods of propagation. Even casual observation will show differences in root development between budded and root-grafted trees, the latter being more hori- zontal, prolonged and shallower on one side of the tree than the. FIG
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectplantpropagation
