Volume 49 Number 4 Article 40
Year 1995 Month 10
Title: Scion/Rootstock Effects on Tree Size, Cumulative Yield and Yield Efficience of ´Granny Smith` Apple and Its Sports, ´Grandspur` and ´Greenspur`
Authors: F.E. Larsen, S.S. Higgins and R.B. Bendel
Abstract:
The influence of 5 rootstocks, seedling,
MM.106, MM.lll, M.7a and M.26, on tree size
and production of 'Granny Smith,' 'Granspur'
and 'Greenspur' apple trees planted in 1982 was
evaluated over the first 7 years of fruit production (1987-93). For all scions, seedling rootstock
produced the largest trees and M.26 produced
the smallest.
Significant differences among the
effects on tree size of the remaining rootstocks
depended upon the scion.
By the end of the
experiment, Granny Smith' was the most productive scion; 'Granspur' was least productive.
Trees on MM.106 produced the most fruit per
tree; trees on M.26 produced the least.
For all
scions, trees on seedling were least efficient.
The most efficient trees depended upon the
scion, e.g., M.26 was significantly more efficient
than all other rootstocks with 'Granny Smith'
but not with 'Greenspur' and 'Granspur! In this
experiment, 'Granny Smith' was the best cultivar,
and MM.106 was tne best rootstock, for cumulative yield.
M.26 was consistently among the
best rootstocks for cumulative yield efficiency.
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