Journal of Vegetables Sciences

Journal of Vegetables Sciences

Quantitative and Qualitative Characteristics of Tomato (Solanum lycopersicum L.) Fruit under Hydroponic Conditions

Document Type : Original Article

Authors
Saeid Allahtavakoli 1
Abolhossein Aboutalebi Jahromi 2
Abdolrasoul Zakerin 3
Abdolkarim Ejraei 3
Hamed Hassanzadeh Khankahdani 4
1 Ph.D. Student of Horticultural Science, Jahrom Branch, Islamic Azad University, Jahrom, Iran
2 Associate Professor, Department of Horticultural Science, Jahrom Branch, Islamic Azad University, Jahrom, Iran
3 Assistant Professor, Department of Horticultural Science, Jahrom Branch, Islamic Azad University, Jahrom, Iran
4 Assistant Professor of Horticultural Researcher of Hormozgan Agricultural and Natural Resources Research Center, Department of Agricultural and Horticultural Research, Bandar Abbas, Iran
10.22034/iuvs.2022.543426.1185
Abstract
Introduction: Most growers do not pay attention to the issue of proper nutrition, including the proper ratio of elements in the nutrient solution and changing the concentration of each element and their ratio at different stages growth. Lack of available information in this regard, in the present study, it has been decided to evaluate the effect of different ratios of nitrogen and potassium on the quantitative and qualitative characteristics of tomato fruit under hydroponic conditions. The balance of nutrients in the culture medium is one of the factors affecting the yield and quality of crops and horticulture. The present study was conducted to investigate the effects of different ratios of nitrogen and potassium on the quantitative and qualitative characteristics of Hirad tomato fruit in hydroponic conditions.
Materials and Methods: Treatments include concentrations of nitrogen and potassium in the vegetative and reproductive period including 1) nitrogen and potassium at concentrations of 130 and 250 ppm in the vegetative stage and 160 and 350 ppm in the reproductive stage; 2) nitrogen and potassium at concentrations of 140 and 260 ppm in the vegetative stage and 170 and 360 ppm in the reproductive stage, respectively; 3) nitrogen and potassium at concentrations of 150 and 270 ppm in the vegetative stage and 180 and 370 ppm in the reproductive stage, respectively; and 4) nitrogen and potassium were at concentrations of 160 and 280 ppm in the vegetative stage and 190 and 380 ppm in the reproductive stage, respectively.

Results and Discussion: The results showed that the nutrition of tomato plant with different ratios of nitrogen and potassium affects different characteristics of the plant such as quantitative and qualitative indicators. The highest stem diameter value was obtained in the vegetative and reproductive stages in treatment 3. Treatment 2 showed the highest yield of single plant, total acid and fruit lycopene, and in treatment 4, the highest amount of fruit chlorophyll and soluble solids was observed.

Conclusion: Also, the highest ascorbic acid content was obtained in treatment 1.In general, in order to achieve maximum yield and improve the quality of tomato fruit, it is recommended to use more potassium and less nitrogen.
Keywords
Hydroponics
Nitrogen
Nutritional solution
Potassium
Tomato
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Journal of Vegetables Sciences
Volume 5, Issue 10 - Serial Number 2
January 2023
Pages 121-135

  • Receive Date 22 November 2021
  • Revise Date 15 February 2022
  • Accept Date 16 February 2022