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Fruit Varieties and Horticultural Digest
(J Fruit Var & Hort Digest)

American Pomological Society

Volume 26 Number 3 Article 8 Pages: 70-71
Year 1972 Month 7
Title: The effect of Seedling vs. Semidwarfing Rootstock on the Frost Hardiness of 'Stayman' Apple Blossoms
Authors: S.A. Weinbaum and C.M. Ritter
Seasonal frosts frequently result in the loss of a significant percentage of the apple crop. Some Pennsylvania orchardists have observed on occasion that the bloom of compact fruit trees appeared more resistant to frost injury than blossoms of the same scion rootedon vigorous stocks. A study was conducted, therefore, to determine whether rootstock vigor could effect a differential response of the bloom and immature fruit to frost.
Ten-year-old trees of the apple cultivar 'Stayman' on EM VII and standard seedling rootstocks were used in this investigation.

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