Comparative study of apple rootstocks 'M9-T337' and 'Supporter 4 Pi 80' with seven cultivars
Vegetative and reproductive characteristics of apple rootstocks М9-Т337 and Supporter 4 Pi 80 budded with the cultivars Breaburn Fenbra, Gala Venus-Fengal, Golden Delicious clone В, Pinova, Red Delicious Hapke, Red Delicious Redkan and Rubinfuji Romf. 811 were compared in the intensive orchard planted at the density of 2380 trees ha-1 (3.5×1.2 m) in the period 2008-2011. Trees were formed as tall spindle. It was found that, with the exception of the cultivar Pinova, rootstock Supporter 4 Pi 80 induced a greater trunk-cross section area, higher trees and greater crown volume to the tested cultivars in comparison with M9-T337 rootstock. A higher yield per unit area was obtained on Supporter 4 Pi 80 rootstock compared to M9-T337 budded with low vigorous cultivar Red Delicious Redkan, whereas M9-T337 was superior on this parameter in combination with cultivars Breaburn Fenbra, Gala Venus-Fengal, Red Delicious Hapke and Rubinfuji Romf. 811.
Tabakov, S.G., Yordanov, A.I. and Kaymakanov, P.V. (2016). Comparative study of apple rootstocks 'M9-T337' and 'Supporter 4 Pi 80' with seven cultivars. Acta Hortic. 1139, 203-208
apple, rootstocks, vigor, productivity, fruit weight, yield