Articles
EVALUATION OF ‘AUKSIS’ APPLE TREES ON DWARFING ROOTSTOCKS IN THE BALTIC REGION
Article number
1058_77
Pages
601 – 606
Language
English
Abstract
Apple rootstock trials were carried out in Lithuania, Latvia and Estonia in the frame of the project Baltic Fruit Rootstock Studies. Local cultivar Auksis on rootstocks P22, P59, P61, P62, P66, P67, PB-4, Pūre 1, B.9, B.396, M.9 and M.26 were planted in 2005. Different climatic and soil conditions were characteristic for the trial locations.
The soils were an Epicalcari-Endohypogleyic cambisol with high content of nutrient elements in Lithuania; a brown soil with residual carbonates with medium high nutrient concentrations in Latvia; and a sandy loam with medium high nutrient concentrations in Estonia.
Climate conditions became more severe in the direction from Lithuania towards Estonia.
The most vigorous growth and the highest yield were recorded in Lithuania.
The rootstock effect on tree growth had a similar tendency, but some differences were found in each location.
The rootstocks P22, P59, P61 and PB-4 appeared to be more dwarfing than M.9. The growth rate of trees on B.396, B.9, P62, P67, P66 and Pūre 1 was similar to those of trees on M.9. Effect of rootstocks on cumulative yield and fruit weight was modest.
Wintering ability of rootstocks was different in every location.
Unsatisfactory wintering ability in Latvia and Estonia was observed for the trees grafted on rootstocks P61, P22 and M.9. Rootstock P 67 had good evaluation results for several parameters.
The soils were an Epicalcari-Endohypogleyic cambisol with high content of nutrient elements in Lithuania; a brown soil with residual carbonates with medium high nutrient concentrations in Latvia; and a sandy loam with medium high nutrient concentrations in Estonia.
Climate conditions became more severe in the direction from Lithuania towards Estonia.
The most vigorous growth and the highest yield were recorded in Lithuania.
The rootstock effect on tree growth had a similar tendency, but some differences were found in each location.
The rootstocks P22, P59, P61 and PB-4 appeared to be more dwarfing than M.9. The growth rate of trees on B.396, B.9, P62, P67, P66 and Pūre 1 was similar to those of trees on M.9. Effect of rootstocks on cumulative yield and fruit weight was modest.
Wintering ability of rootstocks was different in every location.
Unsatisfactory wintering ability in Latvia and Estonia was observed for the trees grafted on rootstocks P61, P22 and M.9. Rootstock P 67 had good evaluation results for several parameters.
Publication
Authors
J. Lepsis, A. Bite, D. Kviklys, N. Univer
Keywords
Malus domestica Borkh., clonal rootstocks, tree growth, yield
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