ISHS Acta Horticulturae 221: Symposium on Horticultural Substrates and their Analysis
ARTIFICIAL SUBSTRATES, LIQUID FERTILIZATION AND APPLE CULTURE. RESULTS ON MODEL AND AMOUNT OF GROWTH. |
| Authors: | M. Tattini, P. Mariotti, L. Tazzari, V. Carmi |
| Abstract:
One year old apple plants (cv. "Golden Delicious") on M26 and M27 were grown for 5 months, in 3.5 l containers with peat/sand substrate (50/50 v/v), using 2 fertilizing treatments and a irrigation with deionized water (as control). The interation between nutritive supply and rootstock on the cultivar's growth and nutritional status was evaluated. The results show that, in a system limiting root development, the vigour class of the rootstock emerges only with fertilizing treatments. Furthermore specific interactions rootstock/nutritive supply emerge and, in this connection, the more dwarfing rootstock seems to show a closer relationship with the fertilizing treatments. As regard to nutritional status a positive correlation between nitrogen supply and foliar content was detected for M26 rootstock, while in M27 the relative proportions of inorganic nitrogen seem to have a more relevant effect respect to total nitrogen supply. | |
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