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Fruit Varieties Journal
(Fruit Var J)

American Pomological Society

Volume 37 Number 3 Article 1 Pages: 62-79
Year 1983 Month 7
Title: The Penn State Low Trellis Hedgerow System of Apple Production
Author: L.D. Tukey
Trellising is a form of espalier where plants are trained as a hedge but supported on posts and wire rather than on a wall. Although originating several hundred years ago, trellising is being used successfully today as a system for commercial apple and pear production in various parts of France and Belgium. Conversely, the potentials of a trellised system for the commercial apple production in the U.S. have been realized only recently. Current feasibility is related to the greater availability of the more dwarfing size-controlling rootstocks, the in troduction of growth regulating chemicals, the ability to utilize various training methods more effectively with smaller sized trees, and certain economic advantages of the system. Further, the form of the system has certain potentials for improved mechanization and labor use, especially in relation to mechanical harvesting. Trellising has been under study at the University for over a decade, and has led to the development of the Penn State low trellis hedgerow system for the commercial production of apples. This system is suitable also for the small or amateur fruit grower. To meet current needs and conditions, the art of trellising has been simplified. The philosophy behind this system is the complete control of growth and the regulation of cropping.

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