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vol.25 número3IMPORTANCIA DEL ORIGEN EN EL CONSUMO DE ALIMENTOS EN LA IX REGIÓN DE CHILEEFECTO DE PRODUCTOS NO CONVENCIONALES PARA EL CONTROL DE THRIPS TABACI (THYSANOPTERA: THRIPIDAE) EN EL CULTIVO DE AJO (ALLIUM SATIVUM) EN LA QUEBRADA DE HUMAHUACA (JUJUY-ARGENTINA) índice de autoresíndice de assuntospesquisa de artigos
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Idesia (Arica)

versão On-line ISSN 0718-3429

Resumo

MENDEZ-NATERA, Jesús Rafael et al. EFFECT OF IRRIGATION ON CROP SEASON, SEED NUTRITIVE CONTENT AND ACHENE YIELD IN FOUR SUNFLOWER (HELIANTHUS ANNUUS L.) CULTIVARS. Idesia [online]. 2007, vol.25, n.3, pp.31-40. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292007000300004.

The application of appropriate supplementary irrigations in sunflower would produce a better plant architecture and more foliage area, traits that will guide a better yield. The objective of this work was to evaluate the effect of three irrigation intervals on crop season, seed oil and protein contents and achene yield per plant in four sunflower cultivars. A split-plot design was used with three replications, the irrigation intervals were the main plots and sunflower cultivars were the sub-plot. There were not significant differences for cultivars, irrigation intervals and irrigation intervals x cultivars interaction for seed oil content (29.21%). The earlier cultivar at flowering was M-733, while the later one was S-515. Cultivar H-18-A had the smaller seed protein content in comparison with the other three cultivars, which did not differ among them. H-18-A had a similar seed yield per plant to those of M-733 and GV-28074, but bigger than those of S-515. The bigger seed protein content occurred in plants growing at 9-day and 12-day irrigation intervals, surpassed those of plants growing at 6-day irrigation intervals. Cultivar GV-28074 was earlier at harvest growing at 6-day and 12-day irrigation intervals, while M-733 was earlier at harvest at 9-day irrigation intervals. The comparison among cultivars indicated that H-18-A had a crop cycle similar under the three irrigation intervals, while S-515 and GV-28074 were earlier maturing at 6-day irrigation intervals than 9-day and 12-day ones, cultivar M-733 was earlier maturing at 9-day and 12-day irrigation intervals than 6-day interval. It can be concluded that the performance of the total cycle in the four cultivars was affected by the irrigation intervals. The increased irrigation intervals produced an increment of the seed protein content no matter the cultivar used.

Palavras-chave : Sunflower; Helianthus annuus; irrigation frequency.

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