J.I. Macua, I. Lahoz , J.M. Bozal
In Navarre, the artichoke is a crop of great interest which is destined not only to fresh market but also to agro-industry (canning and freezing). Furthermore, this region is the largest offshoot producing area in Spain for crop regeneration on the Mediterranean seaboard. In Navarre, the traditional ‘Blanca de Tudela’ variety is vegetatively propagated. However, due to the introduction of seed varieties, there is an increasing interest in studying the agronomic behaviour of these varieties in comparison with the ‘Blanca de Tudela’. In Navarre, most of the artichokes are grown annually with spring harvesting, although planting is achieved in early autumn. The ‘Blanca de Tudela’ variety is characterized by its high degree of earliness. By contrast, the seed varieties are not so early and their production is brought forward thanks to gibberellic acid treatments. In cold zones where there is a frost risk, such as in Navarre, the application of this phyto-regulator does not produce the expected results. That is why this work was performed so as to study earliness and production of several seed varieties in biannual cultivation compared to a ‘Blanca de Tudela’ production. Thus, 14 artichoke seed varieties were studied: ‘A-106’, ‘A-109’, ‘A-110’, ‘Alberca’, ‘Bisnes’, ‘Concerto’, ‘DSX-05001’, ‘Harmony’, ‘Opal’, ‘Imperial Star’, ‘Lorca’, ‘Madrigal’, ‘Red Day’ and ‘Victoria’. The ‘Blanca de Tudela’ variety was grown as the control, with offshoot planting and biannual cultivation. During the two years of cultivation the only variety with autumnal production was the ‘Blanca de Tudela’. All the seed varieties only produced in spring and, moreover, the harvesting time was delayed during the second year with respect to the first year of cultivation. The latest varieties were ‘Madrigal’, ‘A-110’, ‘Concerto’ and ‘Harmony’. By contrast, ‘Blanca de Tudela’ earliness was greater in the second year than in the first one. For nearly all the varieties studied, the production fell during the second crop year, except for one of the later varieties where it was higher.
Macua, J.I., Lahoz , I. and Bozal, J.M. (2012). EVOLUTION IN SEED-PROPAGATED ARTICHOKE GROWING IN COLD ZONES OF SPAIN. Acta Hortic. 942, 331-336
DOI: 10.17660/ActaHortic.2012.942.48
Cynara cardunculus L. var. scolymus, biannual cultivation, earliness, productivity

Acta Horticulturae