Abstract
Aspects related to tomato (Solanum lycopersicum L.) mineral nutrition are important for the production of quality fruits. The cherry tomato (Solanum lycopersicum var. cerasiforme) is an alternative for most producers due to its high market value, greater productivity and good acceptance by consumers. The objective with this study was to evaluate the nutritional status of cherry tomatoes cultivated in nutrient solution under omission of macronutrients. The experiment was conducted in a completely randomized design, with seven treatments: complete nutrient solution and omissions of N, P, K, Ca, Mg and S, with five replicates. Visible symptoms of nutritional deficiency were observed in the following order of omission: at 5, 12 and 20 days after transplantation in plants under omission of N, P and K, respectively. Conversely, there were no visible symptoms of deficiency under omissions of Ca, Mg and S. The sequence of growth limitation, determined based on the shoot dry mass of cherry tomato plants, was: N>P>S>Mg>Ca>K. The omission of a nutrient, besides reducing its content in the leaf tissue, causes imbalance between the other nutrients, influencing the parameters of growth and production, leading to morphological manifestations in cherry tomato.
Highlights
Tomato (Solanum lycopersicum L.) has great economic and social importance, standing out among the most consumed vegetables in the world, including Brazil, because it is cultivated in the most diverse regions of the country (Campeche et al, 2017)
Visible symptomatology of plants Visible symptoms of nutritional deficiency were observed in the following order: N, P and K, after the treatments began
Similar behavior was observed in bell pepper (Capsicum annuum) by Silva et al (2019), who found that the first symptom of deficiency was caused by the absence of nitrogen in the nutrient solution
Summary
Tomato (Solanum lycopersicum L.) has great economic and social importance, standing out among the most consumed vegetables in the world, including Brazil, because it is cultivated in the most diverse regions of the country (Campeche et al, 2017). Experiments with omission of essential elements are used to determine the adequate mineral nutrition of cultivated plants (Flores et al, 2015; Maia et al, 2019; Martinez et al, 2020; Campos et al, 2021; Silva et al, 2021). The sequence of nutrient absorption by tomato at the end of the production cycle under the omission of macronutrients, according to Moraes et al (2018), is as follows: K> N> Ca> S> Mg> P. Studies on tomato nutrition have been carried out (Prado et al, 2011; Moraes et al, 2018; Maia et al, 2019), research on the diagnosis of nutritional deficiency with the omission of macronutrients in nutrient solution have been neglected
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