Influence of Planting Depth on Growth, Yield and Fruit Quality of M. 26 Interstem ^|^lsquo;Fuji^|^rsquo; Apple Trees
| Autor: | Kazuyuki Tsukahara, Yuzo Kobayashi, Hiroo Koike |
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| Rok vydání: | 1988 |
| Předmět: | |
| Zdroj: | Journal of the Japanese Society for Horticultural Science. 57:360-365 |
| ISSN: | 1880-358X 0013-7626 |
| DOI: | 10.2503/jjshs.57.360 |
| Popis: | The effect of planting method on the tree vigour of M. 26 interstem ‘Fuji’ apple trees was examined in shallow sandy soil from 1978 to 1986. Trees on M. 26 interstem exposed exhibited a retardation of tree vigour from the 5th to 6th year after planting; particularly, tree growth and yield were significantly decreased. The calculated orchard LAI including alley ways showed 2.5 (interstempiece half-buried) and 1.1 (interstempiece exposed). Fruit from trees with interstem half-buried were larger and the eatin gquality was better than from trees with interstem exposed. Burrknots were formed at the node of the exposed interstem. It was thought that tree vigour was affected by the degree and number of those burrknots. Original roots of trees with ituerstem half-buried were replaced by new roots arising from the M. 26 interstempiece near the soil surface at the 4th year after planting. Root growth of the interstem exposed trees were drastically suppressed. These findings suggest that M. 26 interstem trees, which have been widely used in Japan, must be planted deeply in order to avoid burrknot formation on the interstem piece above ground. |
| Databáze: | OpenAIRE |
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