Abstract

MARTEL-VALLES, José Fernando et al. Mineral distribution of tomato plants irrigated with water contaminated with benzene, dieel and gasolina. Ecosistemas y recur. agropecuarios [online]. 2017, vol.4, n.10, pp.21-30. ISSN 2007-901X.  https://doi.org/10.19136/era.a4n10.811.

As a result of oil production activities, wastewaters with hydrocarbons and heavy metals may be obtained. The objective was to evaluate the response of tomato plants treated with daily applications of benzene, diesel and gasoline at two concentrations: 15 and 30 mg L-1. The effect on electrical conductivity (EC) and pH in irrigation leachates, as well as on morphological variables, namely plant and fruit mineral composition and fruit quality, was evaluated. The pH of the leachate decreases with the application of benzene and gasoline at 15 mg L-1; by contrast, EC increases by applying diesel and benzene at 15 mg L-1 and gasoline at 30 mg L-1. Treatment with 30 mg diesel L-1 caused the death of 55 % of the plants. The application of benzene, diesel and gasoline had no significant effect on morphological variables, favoring the accumulation of minerals in the plant but changing the distribution of micro and macro elements in its different organs. In fruits, no changes in Ph or redox potential were observed, while total soluble solids decreased with gasoline at 30 mg L-1 and EC increased with benzene and diesel at 15 mg L-1 and gasoline at 30 mg L-1.

Keywords : Fruit quality; oil pollution; Solanum lycopersicum L.; translocation.

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