Resumo

SANTIS SANTIS, Martha et al. Agronomic yield of tomato supplemented with Fe, Cu and Zn microelements. Rev. Mex. Cienc. Agríc [online]. 2019, vol.10, n.6, pp.1379-1391.  Epub 02-Out-2020. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v10i6.1822.

The tomato is one of the most important vegetables worldwide, so knowing the management of nutrition and its interaction in agronomic performance is important. The experiment was carried out in a low-tech greenhouse, of the Autonomous Agrarian University Antonio Narro with the objective of determining the supplementary effect in different concentrations of the Fe, Cu and Zn microelements on the agronomic yield of the tomato crop. Three factors were evaluated that consisted of the supplementary applications of fertilizers based on Fe, Cu and Zn and two levels of concentration for each case, in addition to the control treatment (normal dose of the Steiner nutrient solution). The treatments were evaluated by a completely randomized design with 3 x 2 factorial arrangement, with 16 repetitions per treatment. The low doses of Zn exceeded the control 27.3% in the variable vitamin C, while, in the total soluble solids, leaf area (AF), leaf area ratio (RAF) and specific leaf area (AFE) the high levels of Fe exceeded to the control in 16.4%, 138%, 112% and 44%, respectively; however, in yield the high doses of Cu exceeded the control 36%.

Palavras-chave : copper; iron; micronutrients; nutrient solution; zinc.

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