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Acta Scientiarum. Agronomy

versão On-line ISSN 1807-8621

Resumo

BISCARO, Guilherme Augusto et al. Effect of different levels of fertilization by irrigation on morphophysiological characteristics of spinach. Acta Sci., Agron. (Online) [online]. 2011, vol.33, n.3, pp.487-493. ISSN 1807-8621.  https://doi.org/10.4025/actasciagron.v33i3.5007.

The aim of this research was to evaluate the effect of fertilization on morpho-physiological characteristics of spinach seedlings (Tetragonia tetragonoides). The experiment was carried out at the Agrarian Science Faculty of the Federal University of Grande Dourados (UFGD), and used Murer® liquid fertilizer. The experimental design was randomized blocks, with six doses of liquid fertilizer in water for irrigation (0, 1.25, 2.5, 5.0, 10.0 and 20.0 mL L-1) and four replications. Two fertilizations per irrigation were done, at 8 and 22 days after germination (DAG). Morpho-physiological characteristics were determined. It was concluded that fertilizations by irrigation promoted a greater number of leaves and greater values of length, fresh and dried mass of aerial parts of plants, leaf area and dried mass of roots for spinach seedlings. The 20.0 mL L-1 dose resulted in statistically different results from those recommended by the manufacturer (5.0 mL L-1), increasing the number of leaves, aerial part length, aerial part fresh weight and leaf area.

Palavras-chave : Tetragonia tetragonoides; plant nutrition; liquid fertilizer; NPK.

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