Physiological and Nutritional Responses to Ozone Application in Tomato Seedling Plants

Abstract

Research on environmentally friendly techniques for the agroindustry is growing constantly. In this sense, the supply of ozone (O3) 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 O3 via fertigation in crops. For that reason, in this study, two trials were carried out simultaneously to determine the consequences of O3 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 O3. The second trial was performed to establish the ideal O3 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 O3 treatment resulted in the highest overall dry weight gain, whereas O3 application decreased leaf proline and total soluble sugars concentrations. There was no clear effect on chlorophyll and total soluble sugars in tomato plants under O3 application. Regarding nutritional parameters, the application of O3 led to a higher content of P and K in tomato plants. These findings indicate that the use of dissolved O3 via fertigation may present several advantages for tomato plants’ growth and quality.

Irrigation and Fertilization: A Comprehensive Analysis of Their Influences on Qualitative Indices in Two Plum Varieties

“…1.514 (10) a-empirical coefficient, which is determined as a = 0.000000675I 2 − 0.000077I + 0.01279211 I + 0.49239…”

“…Plants respond differently to the actions of stress factors, depending on the characteristics of the species, cultivar, etc. ; from this point of view, there are species or cultivars that are either resistant or sensitive to the action of a stress factor [10]. Extended periods of drought, reduced river flow, lower lake levels, and falling water tables all have a major detrimental impact on the economy in general and on the agricultural sector in particular.…”

The Effect of Irrigation and Fertilization on the Qualitative Indices of the Planting Material, for Some Plum Species, with the Aim of Obtaining a Sustainable Fruit Trees Production, in the Pedo-Climatic Conditions of Romania

“…This causes the reduction of the leaf surface, which is one of the ways by which plants reduce their water losses from the tissues, preventing dehydration and cell death [10]. Plant growth is the result of the process of cell division, as well as increasing their volume, size, and mass [11]. Thermal stress can directly influence plant growth through the effect it has on the development of this process, but also indirectly, through the action it has on the development of other physiological processes (photosynthesis, transpiration, respiration, etc.…”

Variability of Properties Modulating the Biosynthesis of Biologically Active Compounds in Young Barley Treated with Ozonated Water

“…The ozone source used generated a mixture of ozone and molecular oxygen (O 2 ), which resulted from the fact that input gas material was provided to the generator from an oxygen concentrator. The use of water saturated with ozone had a positive effect on the biometric parameters of tomato plants [ 15 ]. Ozone and ozonated water can have a positive impact on the microbiological status of young plants.…”