Articles
BEHAVIOUR OF SOME NEW APRICOT CULTIVARS UNDER THE PARALLEL TRIDENT PLANTING SYSTEM
Article number
1058_13
Pages
129 – 136
Language
English
Abstract
A study was established on the Eastern part of the Romanian plain on loam-sandy soil, to determine the adaptation of some new apricot cultivars grafted on two rootstocks.
Apricot trees were produced by micro-grafting scion material ex vitro on micro-propagated rootstocks, in February and grown in 4 litre pots in Italy at Vitroplant Italia.
The six scion cultivars: Flavorcot, Sweetcot and Tomcot, grafted on Ishtara and Farbaly, Farfia and Farhial grafted on Mirobolan 29 C, were planted July 2009 at 4.0 x 2.0 m.
Trees were trained to a four-wire-trellis fixed to concrete poles.
The orchard was protected against hail with a black net.
In the second year after planting, three shoots per tree were chosen as leaders and trained vertically to form the axes of a parallel trident canopy.
By winter and summer pruning, the strong lateral shoots, were eliminated.
The inter-row was naturally covered with a mixture of perennial grasses and mowed mechanically.
Tree growth was reported as trunk and axes cross sectional area, number and shoots length per tree, typology of the fruit branches, etc.
The highest values of the TCSA were recorded on cultivar Farfia, grafted on Mirobolan 29 C (30.5 cm2) and Sweetcot, grafted on Ishtara (25.8 cm2) and the lowest (20.1 cm2) on Farbaly and Farhial, both grafted on Mirobolan 29 C. Additionally, data was collected on fruit number, fruit size and yield per tree.
The highest yield per tree in the third leaf was produced by Farfia (15.0 kg). Three productivity indexes were compared.
Ishtara seams to influence positively the fruit size.
The biggest fruit were recorded on Flavorcot with a mean of 107.1 g.
While the planting is still young, the parallel trident system shows promise regarding ease of management, sustainability and efficiency for the new apricot cultivars introduced in Romania.
Apricot trees were produced by micro-grafting scion material ex vitro on micro-propagated rootstocks, in February and grown in 4 litre pots in Italy at Vitroplant Italia.
The six scion cultivars: Flavorcot, Sweetcot and Tomcot, grafted on Ishtara and Farbaly, Farfia and Farhial grafted on Mirobolan 29 C, were planted July 2009 at 4.0 x 2.0 m.
Trees were trained to a four-wire-trellis fixed to concrete poles.
The orchard was protected against hail with a black net.
In the second year after planting, three shoots per tree were chosen as leaders and trained vertically to form the axes of a parallel trident canopy.
By winter and summer pruning, the strong lateral shoots, were eliminated.
The inter-row was naturally covered with a mixture of perennial grasses and mowed mechanically.
Tree growth was reported as trunk and axes cross sectional area, number and shoots length per tree, typology of the fruit branches, etc.
The highest values of the TCSA were recorded on cultivar Farfia, grafted on Mirobolan 29 C (30.5 cm2) and Sweetcot, grafted on Ishtara (25.8 cm2) and the lowest (20.1 cm2) on Farbaly and Farhial, both grafted on Mirobolan 29 C. Additionally, data was collected on fruit number, fruit size and yield per tree.
The highest yield per tree in the third leaf was produced by Farfia (15.0 kg). Three productivity indexes were compared.
Ishtara seams to influence positively the fruit size.
The biggest fruit were recorded on Flavorcot with a mean of 107.1 g.
While the planting is still young, the parallel trident system shows promise regarding ease of management, sustainability and efficiency for the new apricot cultivars introduced in Romania.
Publication
Authors
F. Stănică, A. Eremia
Keywords
Prunus armeniaca, canopy, vegetative growth, yield, productivity index
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