Production and fruits quality of Tahiti lime tree irrigated with different frequencies irrigation and water depths / Produção e qualidade de frutos da limeira Tahiti irrigada com diferentes freqüências e lâminas de água

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Aiminig to evaluate the effects of different water depths and irrigation frequencies on the parameters of production and fruits quality of Tahiti acid lime tree [Citrus latifolia (Yu. Tanaka) Tanaka], an experiment was conducted during the period of September 2006 to February 2007. The work was realized on a commercial orchard under trickle irrigation, where plants were spaced 6 x 5 m and located in José de Freitas, north center region of the Piauí State, Brasil. A randomized blocks and split-plot experimental design was used with four replications. The treatments consisted of two irrigation frequencies (one and two days), in the plot, and of five water depths, in the subplots, corresponding to 68, 80, 100, 124 and 136% of the crop evapotranspiration (ETc). The experimental unit was represented for five trees. Harvests were realized at 18/12/2006 and 14/02/2007. The management of irrigation was daily by water balance in the soil, using the Irriplus software. The characteristics of production evaluated were total number of fruits for tree, medium weight of fruit and total yield. The fruit quality was evaluated through of measurement of skin thickness, juice yield, total soluble solids content (TSS), pH and titrable total acidity (TTA). The water use efficiency of treatments was calculated by relationship between the total yield of fruits and crop water total consumption (irrigation + effective precipitation). It was concluded that irrigation management. Irrigation managed with daily frequency and 100% Etc, according with used model, was the most indicated treatment to maintain smaller variations of soil humidity on the interval between the field capacity and the minimum humidity recommended for the crop, which resulted greater productivity, medium weight and physical efficiency maximum in the water use. Tahiti acid lime crop didnt increase proportionally the productivity values as water nevels increased, it which emphasizes the importance of a correct irrigation management. The quality of fruits was significantly affected by water depths to the most of evaluated characteristics, on the contrary of irrigation frequency, in that differentiation between one and two days frequency wasnt enough to considerablely alter it.

ASSUNTO(S)

irrigação agua tahiti lime lima ácida taiti irrigation

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