Articles
THE ASSESSMENT OF DIFFERENT ROOTSTOCKS TO THE PEAR TREE CULTIVAR ‘CARRICK’
Article number
872_49
Pages
353 – 358
Language
English
Abstract
Low fruiting is the main problem related to the pear production in Brazil, which makes the country one of the major pear importers.
This research aimed to evaluate different rootstocks to pear tree cultivar Carrick to be used in commercial orchards.
The experiment was carried out in Pelotas/RS, located at latitude 31°5200S, longitude 52°2124W Greenwich and altitude of 13.24 m.
The orchard was set up in 2002 with a density of 2000 trees.ha-1. The trees were conducted in slender spindler system trained on three-wire support with a dripping irrigation system.
The treatments assessed were 13 quince rootstocks (Cydonia oblonga) cultivars Adams, Alaranjado, BA 29, Bereczcki, Champion, Du Lot, DVranja, EMC, Inta 267, Lageado, Melliforme, PineApple and Portugal and one Pyrus calleryana. The experimental design utilized was a complete randomized block with 3 replications of 5 trees each.
The variables assessed were rootstock/scion trunk diameter, tree height, canopy volume, pruning weight, productivity and productivity efficiency. DVranja rootstock provided the highest vigor to the tree, whereas the rootstock cultivars Du Lot, Lageado and Bereczcki the lesser vigor, however not differing from most of the rootstocks in the study.
The highest productivity was verified by using the rootstock Portugal (1.12 t.ha-1), followed by EMC that did not differ from DVranja and BA 29. DVranja showed the highest vigor and also had the highest productivity efficiency (9.53), but did not differ from BA 29. Although DVranja provided more vigor to the tree, it is still a good rootstock alternative to the pear cultivar Carrick.
This research aimed to evaluate different rootstocks to pear tree cultivar Carrick to be used in commercial orchards.
The experiment was carried out in Pelotas/RS, located at latitude 31°5200S, longitude 52°2124W Greenwich and altitude of 13.24 m.
The orchard was set up in 2002 with a density of 2000 trees.ha-1. The trees were conducted in slender spindler system trained on three-wire support with a dripping irrigation system.
The treatments assessed were 13 quince rootstocks (Cydonia oblonga) cultivars Adams, Alaranjado, BA 29, Bereczcki, Champion, Du Lot, DVranja, EMC, Inta 267, Lageado, Melliforme, PineApple and Portugal and one Pyrus calleryana. The experimental design utilized was a complete randomized block with 3 replications of 5 trees each.
The variables assessed were rootstock/scion trunk diameter, tree height, canopy volume, pruning weight, productivity and productivity efficiency. DVranja rootstock provided the highest vigor to the tree, whereas the rootstock cultivars Du Lot, Lageado and Bereczcki the lesser vigor, however not differing from most of the rootstocks in the study.
The highest productivity was verified by using the rootstock Portugal (1.12 t.ha-1), followed by EMC that did not differ from DVranja and BA 29. DVranja showed the highest vigor and also had the highest productivity efficiency (9.53), but did not differ from BA 29. Although DVranja provided more vigor to the tree, it is still a good rootstock alternative to the pear cultivar Carrick.
Authors
C.L. Giacobbo, A. Gazolla Neto, D. Pazzin, P. Francescatto, J.C. Fachinello
Keywords
Pomacea, Cydonia oblonga, Pyrus spp., slender spindles, plant development
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