ISHS Acta Horticulturae 601: II International Persimmon Symposium
COMPARISON OF GROWTH AND FRUIT PRODUCTION ON 'NISHIMURAWASE' PERSIMMON YOUNG TREES GROWN WITH DIFFERENT NON-WOVEN FABRIC CONTAINERS FOR ROOT SYSTEM RESTRICTION |
| Authors: | H. Gemma, T. Toyonaga |
| Keywords: | R/S ratio, tap root, fine root, protrusion, fruit quality |
| Abstract:
On numerous fruit trees there have been many trials for ameliorating the canopy size with some beneficial effects used such as dwarfing rootstocks, certain training systems, the use of container for limitation of rooting volume and so forth. This study was made on the attempt to grow ‘Nishimurawase’ persimmon young trees using non-woven fabric in-ground container, aiming to regulate the canopy size. The growth of all of the trees grown in below-ground container was suppressed, irrespective of kind of container. Among the containers used in this trial, a relatively well-grown tree was found with the soft root-through type container due probably to alleviation of disturbance on root protrusion by non-woven fabric barrier. Also, higher yielded, larger sized and more sugar content fruit were obtained from 4-year-old tree with the soft root-through type container. By contrast the hard root confinement type container resulted in disadvantageous features on tree above ground. The R/S ratio (dry weight of root/dry weight of shoot) was varied when trees were grown in different non-woven fabrics: 1.20 in soft root confinement type, 1.64 in hard root confinement type, 0.93 in hard root-through type, respectively, whereas that of soft root-through type grown-tree showed 0.70. This may reflect severity of inhibitory effect caused by the presumable difference in stress on root systems. | |
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