Influence of dwarfed apple rootstocks on growth, yield and fruit size of various varieties - Part III: 'Jonagored'.

摘要

From 2001 to 2005 the influence of the dwarfed apple rootstocks M 9 (clone: Burgmer 984), Fleuren 56, Supporter 1, P 16, P 22, J-TE-F, J-TE-E and M 27 on growth, yield and fruit size of the apple variety 'Jonagored' was investigated on the locationsAuweiler, Dresden-Pillnitz, Osnabruck and Wurzen in Germany. All rootstocks induced a less vegetative growth as the rootstock M 9. In comparison with M 9 the crown volume of the trees ranged from 91% (Supporter 1) to 57% (M 27). The highest yield potential showed the rootstocks P 16 and M 9. The specific yield (kg/m3) of P 16 was 2% higher than the specific yield of M 9. J-TE-F produced the lowest specific yield.