Abstract
The application of magnetically treated water is a valuable technique for crop irrigation to enhance the yield and quality of agricultural products. This study aims to evaluate the effect of irrigation water depths and the application of water with and without magnetic treatment on the yield and quality of bell pepper fruits in a controlled environment, verifying the effect of magnetically treated water on soil water retention. Two experiments were conducted in the Irrigation Technical Center of the Universidade Estadual de Maringá, Maringá/PR; the first on Summer 2017-2018, and the second on Winter-Spring 2018. A randomized block design with a factorial scheme 3 x 2 with four repetitions was used for the first experiment and a 2 x 2 scheme with six repetitions for the second. The first factor was the water replacement levels (based on the crop evapotranspiration), and the second the irrigation water treatment, with or without magnetic treatment. The yield and number of fruits were determined after six and four harvests in the first and second experiments. Quality characteristics (soluble solids level, pH, and titratable acidity) were evaluated from three fruits of each plant. The data was submitted to the Tukey test (p ≤ 0.05). It was verified that the application of magnetically treated water did not influence yield. However, it increased the levels of soluble solids and pH. To evaluate the effect of applying magnetically treated water on soil retention, 12 pots filled with soil and without plants were used. An increase in the gravimetric soil moisture using magnetically treated water was perceived, demonstrating higher water retention when using the irrigation method.
Highlights
A aplicação de água tratada magneticamente é uma tecnologia valiosa na irrigação das culturas para melhorar o rendimento e a qualidade dos produtos agrícolas
Introducti on Vegetable production has gradually increased during the last years due to increasing demand and their health benefits
Material and Methods The experiments were conducted in a controlled environment located at the Centro Técnico de Irrigação (CTI) of the Universidade Estadual de Maringá (UEM), city of Maringá, state of Paraná
Summary
A aplicação de água tratada magneticamente é uma tecnologia valiosa na irrigação das culturas para melhorar o rendimento e a qualidade dos produtos agrícolas. Para verificar o efeito da aplicação de água tratada magneticamente sob a retenção no solo foram utilizados 12 vasos preenchidos com solo e sem plantas, foi constatada aumento da umidade gravimétrica no solo com a aplicação de água com tratamento magnético, demostrando maior retenção de água quando submetido a essa condição de irrigação. The conduction of more specific studies about magnetism is fundamental because, besides the scarcity of experiments, the skepticism regarding the magnetic treatment is caused mainly by the absence of scientific papers on the subject The application of this technology involves a series of experimental conditions, such as exposition period and induction level, frequencies, intensities, and types of electromagnetic fields (Maheshwari e Grewal, 2009)
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