Sugar Metabolism and Photosynthesis of Tomatoes Irrigated with Water Treated with Low-Frequency Electromagnetic Resonance Fields in Different Fertigation Doses

Author(s)

Nogueira, Bianca Bueno ; Vicente, Eduardo Festozo ; Nunes Chaves, Prinscilla Pamela ; Leotti Zanetti, Willian Aparecido ; Ono, Elizabeth Orika ; da Silva, Gustavo Ferreira ; dos Reis, Andre Rodrigues ; Putti, Fernando Ferrari

• Document type: Journal article
• Source: HORTICULTURAE; v. 8, n. 10, p. 15-pg., 2022-10-01.

Abstract

Management of irrigation and fertilization in greenhouses, if not done correctly, can cause soil salinization. The use of water treated with very low-frequency electromagnetic resonance fields (WVLF) can reduce salinization effects on the photosynthetic and biometric systems. Thus, the purpose of the research to evaluate the metabolism of photosynthesis and the impact of WVLF on the cultivation of tomato crops subjected to different levels of fertigation. For this, the gas exchange parameters were evaluated, as well as chlorophyll a fluorescence, sugar contents, sucrose, chlorophylls, and phaeophytins and fruit production. The gas exchange parameters had greater activity when subjected to irrigation with electromagnetic water, consequently the production of sugar and sucrose increased. Photosynthetic System II showed less salinity effect, being favored by very low-frequency electromagnetic resonance fields. The production increased by 20% for the dose of 2.5 d center dot Sm-1 of WVLF reducing the effects caused by higher doses. Hence, the induction of water by electromagnetic fields can provide less damage to the photosynthetic system and to the cultivation of the tomato crop when subjected to saline stress and, consequently, favor the production of fruits by this crop under such conditions. (AU)

• FAPESP's process: 17/04657-5 - Analysis of the biochemical behavior of tomato culture in saline soil with electromagnetic water treatment
• Grantee: Bianca Bueno Nogueira
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 16/20365-1 - MAGNETIC AND ELECTROMAGNETIC TREATMENT OF WATER FOR IRRIGATION TOMATO CULTURE IN SALINE SOIL
• Grantee: Fernando Ferrari Putti
• Support Opportunities: Regular Research Grants