Autor(es):
Gonçalves, Daniel 
; Oliveira, Cristina ; Oliveira, Pedro B.
Data: 2012
Identificador Persistente: http://hdl.handle.net/10400.5/5708
Origem: Repositório da UTL
Assunto(s): Rubus sp.; protected cultivation; double cropping; rooting; cutting
Descrição
Blackberry production is increasing worldwide and the search for new
production systems has been ceaseless. Considering the extension of vegetative growth,
from March until November, in mild winter climates regions huge cane lengths are
obtained. Considering this feature, a trial with nine blackberry cultivars of different
types, (‘Olallie’, ‘Silvan’, ‘Karaka Black’, ‘Kotata’, ‘Boysenberry’, ‘Ouachita’, ‘Loch
Tay’, ‘Chester Thornless’ and ‘Logan Thornless’) was conducted in order to evaluate
cultivar suitability for double cropping production, in season from floricanes (spring)
and off season (late autumn) from long-canes. For each cultivar two cutting treatments were preformed, floricane suppression and no cutting. Plants grown without floricanes
produced primocanes that had significantly greater cane lengths and node number but
lower diameters. Relatively to rooting treatments, ‘Logan Thornless’ didn´t rooted in
any treatment. In all other cultivars, simple layering was the treatment which produced
longer long-canes, except for ‘Ouachita’ where best results were obtained from layering
20 cm tipped primocanes. Considering the response of each cultivar to this new
production system and their behavior in south-west Alentejo, the most adapted cultivars
in each blackberry type were: ‘Karaka Black’ and ‘Olallie’ for trailing type,
‘Boysenberry’ for hybrids, ‘Ouachita’ to erect types and lastly ‘Chester Thornless’ to
semi-erect types
