Performance of AL.800 as an Apple Rootstock and Interstem in Ohio
DOI:
https://doi.org/10.71318/apom.1994.48.3.186Abstract
AL.800, a potential rootstock identified in a commercial orchard, was propagated through tissue culture and tested in several plantings as a rootstock and interstem. Melrose scions on AL.800 were larger than on MARK. Cultivars on AL.800 tended to begin bearing a year later than on MARK, but cumulative yields after 6 years were similar. After 9 years, trees of ‘Starkspur Supreme Delicious’ on AL.800 were similar in size to trees on seedling, P.18, B.490. MAC.1, M.4 and M.7EMLA. Of this group, cultivars on AL.800 tended to have the lowest cumulative yield/tree and cumulative efficiency and did not differ significantly from seedling. Interstem trees on AL.800 on several rootstocks tended to be less precocious than those with B.9 interstems. Due to the difficulty of propagation by mound layering, lack of precocity and low yields and yield efficiency, AL.800 is not recommended for intensive orchards.
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