Phenotype records for apple varieties and selections grown on dwarf rootstocks, some with interstems that died or were culled. First selections entry is #978 on #1561. Last entry is #32. Several named cultivars are also included.
Horticultural Research Center.
Apple Rootstock/Interstem Trial: Volume 1 Observations between 1950 and 1970 (entries from #978 on #1561 to #32)..
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