Title: The effect of pruning in the training of young olive trees
Identifier: effectofpruningi568jaco (find matches)
Year: 1934 (1930s)
Authors: Jacob, H. E. (Harry Ernest), 1896-1949
Subjects: Plants; Olive
Publisher: Berkeley, Calif. : Agricultural Experiment Station
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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Bul. 568) Effect of Pruning Young Olive Trees 23 sion, Sevillano, and Ascolano trees under systems B, C, and D was not greatly different at any time during the investigation (fig. 10 and table 4). The Manzanillo trees under system D grew faster after 1927 than did the trees of this variety under any other system. It is not clear why
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Fig. 12.—The same Manzanillo tree as shown in figure 11, after pruning in 1929. Illustrates system A after pruning. these annually pruned trees showed a greater growth than those under system A which were unpruned until 1929.5 The crop on all of the Man- zanillo trees prior to 1930 was very light and in that year the trees under system Z> outyielded those under any other system. All of the trees of the Mission, Sevillano, and Ascolano varieties were well shaped at the end of the pruning experiment. The distribution of the scaffold branches on the trunk was best on the annually pruned trees 5 A possible explanation of the better growth of the annually pruned trees might be in their changed habit of growth. The unpruned trees were bush-like in character and the branches were long and drooping. The annually pruned trees were more upright in growth. It is well known that bending the branches of woody plants tends to check their growth.

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