Variations in Growth and Productivity Among Macspur Apple Trees, and Growth Comparisons between Spur and Nonspur McIntosh and Delicious Cultivars
DOI:
https://doi.org/10.71318/apom.1983.37.4.95Abstract
Some Macspur apple ( Malus domestica Borkh) trees in plantings in northeastern United States and Canada have the growth habit of McIntosh. Such "non-spur" trees at the Horticultural Research Center in Belchertown, MA were larger, more productive and had more lateral branching than truely spur-type Macspur trees. In another study, tree size and lateral branching of young Imperial McIntosh and Imperial Red Delicious differed from spur strains of these cultivars. Spur strains of McIntosh differed from each other. However, Macspur, Morspur, and non-spur Imperial McIntosh were similar in branching and trunk x-sectional area. Tree size and lateral branching of Imperial Red Delicious were greater than those of the spur strains tested of the cultivar. It was concluded that Macspur trees may be subject to bud reversion.
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