Physiological and Nutritional Responses to Ozone Application in Tomato Seedling Plants

Alba Ruiz-Espin, Pedro Garcia-Caparros, Alfonso Llanderal, Julian Colunje, Jorge Francisco Moreira and Maria Teresa Lao ()
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Alba Ruiz-Espin: Department of Agronomy, University of Almeria, 04120 Almeria, Spain
Pedro Garcia-Caparros: Department of Agronomy, University of Almeria, 04120 Almeria, Spain
Alfonso Llanderal: Faculty of Technical Education for Development, Catholic University of Santiago of Guayaquil, Av. C. J. Arosemena Km. 1.5, Guayaquil 09014671, Ecuador
Julian Colunje: Department of Agronomy, University of Almeria, 04120 Almeria, Spain
Jorge Francisco Moreira: Department of Agronomy, University of Almeria, 04120 Almeria, Spain
Maria Teresa Lao: Department of Agronomy, University of Almeria, 04120 Almeria, Spain

Agriculture, 2022, vol. 13, issue 1, 1-17

Abstract: Research on environmentally friendly techniques for the agroindustry is growing constantly. In this sense, the supply of ozone (O 3 ) has been taken into consideration, especially for disinfection because of its high oxidizing power. However, there is not enough information about the application of dissolved O 3 via fertigation in crops. For that reason, in this study, two trials were carried out simultaneously to determine the consequences of O 3 application on plant growth and quality of tomato plants. The first trial aimed to assess the effects on tomato fertigated with the nutrient solution and the application of O 3 . The second trial was performed to establish the ideal O 3 supply rate for tomato plants. In both experiments, we measured the biometric, physiological, and nutritional parameters of the tomato plant. The results obtained showed that the application of O 3 treatment resulted in the highest overall dry weight gain, whereas O 3 application decreased leaf proline and total soluble sugars concentrations. There was no clear effect on chlorophyll and total soluble sugars in tomato plants under O 3 application. Regarding nutritional parameters, the application of O 3 led to a higher content of P and K in tomato plants. These findings indicate that the use of dissolved O 3 via fertigation may present several advantages for tomato plants’ growth and quality.

Keywords: chlorophyll; nitrogen; phosphorus; potassium; tomato; ozone (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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