Pear trees are inherently inefficient at ­partitioning growth resources to fruit. Modern-day pear rootstock/scion ­combinations typically used in the United States are vigorous, resulting in trees that require ample space for their structural development. Low tree densities are slow to attain maximum production levels; ­consequently, the time required to recoup establishment costs is postponed. Moreover, complex tree architectures are not amenable to mechanization. Large pear canopies are reliant upon tall ladders that preclude orchard efficiencies in pruning, thinning, and harvest operations. A common thread connecting relatively recent and marked improvements in production efficiency of apple and sweet cherry is the […]