Effects of Apple Cultivar, Rootstock, and Orchard Spacing on Yields, Tree Survival, and Tree Growth
DOI:
https://doi.org/10.71318/apom.1983.37.2.52Abstract
Apple orchard design and management have changed considerably in recent years due to development of smaller trees. Spur type trees, possessing slower growth rates than standard trees, are gaining in popularity in the United States. Although size controlling rootstocks have been widely used in other countries for centuries, their acceptance in the U. S. has been slow (3). The Mailing Merton (MM) rootstocks possessing wooly aphid resistance as well as size control were released in 1952 (4) and were readily accepted. The development of smaller trees led to plantings of higher densities, frequently resulting in earlier production, greater yields per acre and sometimes a shorter life span for the orchard.
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