Resumo

LOPEZ-HERRERA, Amelia et al. Strawberry response cv. Albion at increasing doses of zinc. Rev. Mex. Cienc. Agríc [online]. 2018, vol.9, n.8, pp.1591-1601.  Epub 06-Out-2020. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v9i8.1716.

The Zn is a micronutrient that has an important influence on the growth, yield and quality of crops. The objective of the present work was to evaluate the effect of increasing doses of Zn in the nutrient solution on the growth, yield and quality of the fruit in strawberry cv. Albion. For which strawberry plants were established in 2.5 L pots with tezontle, in an open hydroponic system. The treatments were: control (without application of Zn), 1, 2.5, 5, 7.5, 10, 15, 20, 30 and 40 μmol L-1 of Zn (ZnSO4 7H2O) in the nutrient solution. The yield was increased 151, 161 and 134% with the doses of 5, 7.5 and 10 μmol L-1, respectively. With a dose of 7.5 μmol L-1, the biomass of the plant increased 60%, 93% the fresh weight of the fruits and 24% its firmness. With the doses from 2.5 to 15 μmol L-1 the total soluble solids (SST), titratable acidity (AT), the SST/AT ratio and the concentration of total soluble sugars were increased. The best foliar concentration of Zn (sufficiency) (22 mg kg-1 of dry matter) was recorded with 7.5 μmol L-1. Therefore, it is suggested to use Zn doses between 5 and 15 μmol L-1 in the nutrient solution to satisfactorily cover the requirement of this cultivar.

Palavras-chave : fruit quality; hydroponics; leaf concentration of Zn; yield.

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