Determinación de la fecha óptima de siembra en alcaucil
S.M. García y E.L. Cointry

García, SM and COINTRY, 2007. Determination of the optimum planting date alcaucil. Horticulture Argentina 26 (61): 5-11


The artichoke is propagated asexually being in Argentina the use of seed a little known practice. In order to establish the optimum planting date cultivars sexual multiplication, this work was done inthe faculty of Agricultural Sciences National UniversityRosario located at 33º S and 60º 59' 1'O between 2003 and 2005. As experimental material Imperial Star (IS) and Violeto Invernale (VI) was used, taking place monthly plantings in a design completely randomized block from March to December 2003 and 2004. Number of chapters (NC), medium weight (MW), efficiency (RE), days to harvest (DAC) and days of harvest (DDC) were studied using analysis of variance and test Waller-Duncan for comparison of means. When analyzing planting dates in both cultivars highly significant differences in all variables. November sowing produced more NC (125.4 · 103), PM (179 g), RE (23.6 t · ha-1) and DDC without showing precocity, while June, although it was the earliest, yielded the lowest values ​​in NC (29,2 · 103), PM (117,6 g), RE (3.4 t · ha-1) and DDC. For both cultivars sexual propagation November is the most recommended planting date to generate higher yields and at harvest time coincide competitive prices even generates higher gross income.

economía, exportaciones
Determination of the optimal sowing date for artichoke production
S.M. García y E.L. Cointry

García, S.M. and Cointry, E.L. 2007. Determination of the optimal sowing date for artichoke production. Horticultura Argentina 26(61): 5-11


In Argentina artichoke seed multiplication has not been adopted to a great extent by horticulturists, hence this specie is mainly grown by vegetative propagated means. The objective of the present work was to evaluate different sowing dates on seed-grown artichoke production. The experience was conducted during 2003/05 at the Agronomy Faculty, Rosario National University, located at 33º 1´ S y 60º 59´ O. Imperial Star and Violeto Invernale cultivars were used as plant material along a completed randomized design with four replications. Ten different sowing dates were considered from March to December of 2003 and 2004. The number of artichokes, mean weight of the heads, yield, days to first harvest and harvest period were studied by analysis of variance. Waller-Duncan test was performed for mean comparisons. Highly significant differences were found among sowing dates for all evaluated traits. November sowing showed the highest yield (23.6 t·ha-1), due to an increased number (125.4·103) of heavier heads (179 g), and a longer harvest period as well. The most precocious harvest was attained after June sowing. However it presented the lowest yield (3.4 t·ha-1), number of artichokes (29.2·103) and head mean weight (117.6 g), as well as the shortest harvest period. In order to obtain maximum production of both cultivars from sexual propagation, the November sowing date is recommendable because its production coincides with a time of competitive prices generating a grater gross income.

economics, exports

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