Growth and yield of three plum cultivars on selected rootstocks
2011
Kosina, J., Vyzkumny a Slechtitelsky Ustav Ovocnarsky, Holovousy (Czech Republic)
In the period 1999-2010 clonal plum rootstocks Fereley Ishtara, Pixy GF 655/2 and St. Julien were investigated in the experimental orchard of RBIP Holovousy using scion cultivars Stanley, Cacanska lepotica and Valievka. The following traits were evaluated: trunk cross-section area, total yield per tree, yield efficiency, fruit size, suckering. The highest accumulated yields (1999-2010) an the highest yield efficiency were observed with all scion cultivars on Fereley and Ishtara. Pixy showed the lowest productivity with all scion cultivars. The total accumulated yield for trees trained as a central leader tree was higher than for trees trained as a spindle. The yield efficiency was higher for spindles than for trees trained to a central leader. The growth vigour of Fereley and Ishtara was similar to control (GF 655/2). The rootstock Pixy grew significantly weaker than GF 655/2 with scion cultivars Cacanska lepotica and Valjevka. The growth vigour of trees trained as a central leader was larger than those trained as a spindle. rootstocks had no significcant effect on fruit size. produced the highest number of suckers. Trees on GF 655/2 produced the highest number of suckers. Based on our results, Fereley seems to be a promising plum rootstock.
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