ISHS Acta Horticulturae 451: VI International Symposium on Integrated Canopy, Rootstock, Environmental Physiology in Orchard Systems
HIGH DENSITY PLANTED APPLE ORCHARDS: EFFECTS ON YIELD, PERFORMANCE AND FRUIT QUALITY |
| Authors: | G. Costa, E. Beltrame, P. Zerbini, A. Pianezzola |
| Keywords: | fruit weight, productivity index, trunk diameter, storability |
| Abstract:
The number of trees used to establish an apple orchard increased constantly over recent years. In order to determine if high density plantings (HDP) would be appropriate for apple cultivation in northeastern Italy, the yield and fruit quality of six cultivars and three planting densities were compared. 'Golden Reinders', 'Jonagored', 'Staymared', 'Braeburn' and 'Fuji' all grafted on M.9 and planted in March 1992 at 2,778, 4,444 and 6,667 trees.ha-1. In addition, 'Red Chief, a 'Red Delicious' spur-type clone, was grafted on M.26 and planted at 4,167, 6,667 and 9,524 trees.ha-1. In general all cultivars performed well in a HDP orchard and began cropping early. 'Braeburn', 'Fuji', 'Staymared' and 'Red Chief' started to crop substantially in the second year. High and medium planting density performed better than low planting density. | |
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