Length of Old Home Interstem Makes Little Growth Difference
The dwarfing pear quince, Cydonia oblonga, was commonly used as rootstock but had compatibility problems resulting in some varieties requiring an interstock. A plot was established in Corvallis, OR in 1965 to determine the importance of interstem length in pear trees.
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March 1972 Vol. 16, Issue 1 Pages 3-4
M.N. Westwood H.O. Bjornstad Department of Horticulture Oregon State University, Corvallis, OR