NC-140 1976 Cooperative Apple Interstem Planting
DOI:
https://doi.org/10.71318/apom.1986.40.4.108Abstract
Interstems of M.9 on MM.111, Antonovka and Ottawa 11 rootstocks with 2 scion cultivars were planted in 10 locations in 1976 and handled according to the guidelines established by NC-140. Tree loss on MM.111 was 9% or less over 9 years, but losses exceeded 16% on the other rootstocks. Trees of ‘Empire’ were 25% larger and 36% more productive than trees of ‘Sturdeespur,’ as well as more efficient on each rootstock. ‘Empire’ was more efficient than ‘Sturdeespur’ and trees on Antonovka were most efficient followed by Ottawa 11 and MM.111. Scions and interstems on Ottawa 11 suffered the greatest winter injury, MM.111 the least with Antonovka intermediate.
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