Accumulation of cations in lettuce cultivars in hydroponic system with brackish waters

The use of brackish water to cultivate lettuce can bring about nutritional imbalances, impairing manufacturing. In this context, the objective of the current review was to evaluate the effect of salinity on the accumulation of dry matter of the aerial portion and macronutrients K, Ca, and Mg and their relations with Na in lettuce cultivars developed in a reduced-value hydroponic process. The experiment was carried out in a randomized block style and design, in a 6 × 2 factorial plan, with four replicates.

The remedies consisted of six electrical conductivities of the nutrient solution (1.5, 2.5, 3.5, 4.5, 5.5 and 6.5 dS m-1) and two lettuce cultivars, Betty [iceberg] and Mimosa [green-leaf]. Regardless of the evaluated cultivar, the improve in the electrical conductivity of the nutrient alternative decreased the accumulation of dry subject in the aerial part. In equally cultivars, the maximize in the electrical conductivity of the nutrient resolution minimized the accumulations of K and Mg and improved Na/K, Na/Ca, and Na/Mg ratios.

The eco-friendly-leaf cv. Mimosa showed Ca and Mg accumulations increased than that in the iceberg cv. Betty, regardless of electrical conductivity. The boost in electrical conductivity minimized the accumulation of K, in both equally cultivars evaluated. The reducing buy in the accumulation of macronutrients and sodium in the two cultivars was: K > Na > Ca > Mg.

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Silva, Anna & Silva, Gerônimo & Maria de Menezes, Sirleide & Cruz, Ruana Iris & Júnior, José & Rolim, Mario. (2021). Accumulation of cations in lettuce cultivars below minimal-value hydroponic system with brackish waters. Revista Brasileira de Engenharia Agrícola e Ambiental. 25. 833-839. 10.1590/1807-1929/agriambi.v25n12p833-839. 

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