File:Apple pollination studies in the Annapolis Valley, N.S., Canada, 1928-1932. (1933) (19738544552).jpg

Title: Apple pollination studies in the Annapolis Valley, N.S., Canada, 1928-1932.
Identifier: applepollination162brit (find matches)
Year: 1933 (1930s)
Authors: Brittain, W. H; Canada. Dept. of Agriculture
Subjects: Apples; Fertilization of plants by insects
Publisher: Ottawa : Department of Agriculture
Contributing Library: Agriculture and Agri-Food Canada â Agriculture et Agroalimentaire Canada
Digitizing Sponsor: Agriculture and Agri-Food Canada â Agriculture et Agroalimentaire Canada

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37 D. STUDIES IN THE INTER-FRUITFULNESS OF STANDARD VARIETIES 1. OBJECT OF EXPERIMENTS The fact has been brought out in the preceding experiments that all varieties benefit by cross-pollination. Furthermore, it is clear that it is not sufficient merely to plant together varieties that blossom at the same time, since some varieties give poor results when used to pollinate others. Some that are good pollinizers for other varieties are themselves highly self-unfruitful and some, that yield good results when pollinated with pollen from a suitable variety, are themselves deficient as pollinizers. A study of the results obtained in hand- pollination tests gives useful information as to the inter-fruitfulness of the varieties tested and also makes clear certain general principles applicable to all work of this kind. The varieties chosen for these standard tests were as follows:â Gravenstein Baldwin i King Cox Orange i Golden Russet Northern Spy Certain other varieties were used as pollinizers as opportunity offered. Mcintosh might well have been added to the list, but so much information is available regarding this variety from other sources that it was not considered necessary. Special tests with the varieties Blenheim and Stark are described in another section. 2. TECHNIQUE OF PROCEDURE AND DEFINITIONS OF TERMS USED Vigorous trees of the same age and growing under similar cultural conditions at the Experimental Station, Kentville, were selected. In a few cases, where the desired variety did not happen to be available through lack of sufficient bloom, resort to other orchards was made, since in all cases, only trees in good bloom were used. During the first year of our work as many crosses as possible were placed on a single limb, in order to give each cross an even chance with others. In 1929, â / / / / / / / / /j/V/i//va//v/\///: a ~\ J ~ A . H â¢A A /w v yj v r v ° n 3D 1 si sy \ J I 1 » Sfai/ 26 - June 9. /AX?
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Sfai/23-June//. /028 Fig. 5.âThermograph records during blooming period, 1928-30, Kentville, N.S. (original). however, six trees of each variety were selected and in 1930-1932, ten trees. A different limb was selected on each, for each cross that it was desired to make. In order to reduce to a minimum any error resulting from differences in limbs from different sides of the tree a rotation of the different hand pollinated limbs was practised. This method was carried out throughout the experiment.

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