ISHS Acta Horticulturae 160: III International Symposium on Research and Development on Orchard and Plantation Systems
THE YIELD POTENTIAL OF SOME APPLE HIGH-DENSITY PLANTING SYSTEMS |
| Authors: | A. Suta, M. Cotorobai, S. Stan |
| Abstract:
The precocity of bearing and the productivity of an orchard is dependent on management designed to meet the physiological requirements of the specific scion/rootstock combination. In order to maximise solar energy conversion into organic biomass per hectare the density of planting is very important. To obtain maximum productivity per hectare it is therefore essential to combine tree density, rootstock/scion combination and tree management in the most appropriate way. Apple and pear are the most suitable fruit species for high-density planting because of the many possibilities to combine scion varieties and rootstocks of different vigour. In recent decades, although spacing has been matched to rootstock/scion combination suitable training systems were not often used (Suta, 1983). As a result both the physiological status of the trees and orchard operations were adversely affected. Much work has been done to increase the efficiency of high-density planting (Luckwill and Child, 1973; Wertheim and Lemmens, 1973; Gautier, 1974; Renand, 1976). In this context an experiment with 60 treatments was organised at the Research Institute for Fruit Growing, Pitesti-Maracineni. This included many combinations of varieties, rootstocks, planting densities, training systems and row arrangements including the ‘meadow orchard’ (Cotorobai and Stan, 1983). | |
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