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Backwash process in a sand filter prototype used in irrigation CIGR Journal
Cândido de Souza, Álvaro Henrique; Seron, Cássio de Castro; Lorenzoni, Marcelo Zolin; de Deus, Fábio Ponciano; Rezende, Roberto.
Backwash process of sand filters requests specific surface velocity to reach the recommended filter bed height expansion, however the expansion of the filter bed height is very influenced by their characteristics. This work had as aim to evaluate the effect of different sand particle size, static filter bed layer and expansion of the filter bed height on a prototype of sand filter during backwash process. The tests were accomplished using a sand filter prototype that had structural similarity and shape as commercial equipments (24 cm of height and 12.7 cm of diameter). The treatments consisted from combinations of five separate sand particle sizes (0.15; 0.33; 0.51; 0.72 e 0.92 mm of medium diameter), five static filter bed layer (5; 7; 9; 11 and 13 cm)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water treatment; Irrigation; Fertigation; Irrigation water treatment; Superficial velocity; Sand particle sizes; Filter bed layer.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4910
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GROWTH AND DEVELOPMENT OF BELL PEPPER CROP IRRIGATED WITH MAGNETICALLY-TREATED WATER 196
Lorenzoni, Marcelo Zolin; Rezende, Roberto; Souza, Alvaro Henrique Cândido de; Seron, Cassio de Castro; Gonçalves, Antônio Carlos Andrade; Saath, Reni.
This study aimed to evaluate the benefits of irrigation with magnetically-treated water and replacement depths based on ETc, in plant growth and development of bell pepper grown in a protected environment in two cultivation seasons. The experiment was carried out in a protected environment, in the Centro Técnico de Irrigação (CTI), at Universidade Estadual de Maringá (UEM), in Maringá - PR. Two experiments were performed: summer (2017-2018) and winter-spring (2018). The experimental design adopted was randomized blocks in factorial scheme 3 x 2 (six treatments) with four replications in the summer season and 2 x 2 (four treatments) with six replications in the winter-spring season. The first factor consisted of water replacement depths (50, 75 and 100% of...
Tipo: Info:eu-repo/semantics/article
Ano: 2020 URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/4173
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IRRIGATION WITH WATER DEFICIT APPLYING MAGNETIC WATER ON SCARLET EGGPLANT 196
Seron, Cássio de Castro; Rezende, Roberto; Lorenzoni, Marcelo Zolin; Souza, Álvaro Henrique Candido de; Gonçalves, Antonio Carlos Andrade; Saath, Reni.
The work aimed to evaluate the effect of irrigation with magnetically treated water on development, growth, and yield of the scarlet eggplant (Solanum gilo Raddi) cv. Morro Grande, in two growing seasons (autumn and spring). A completely randomized design in a 3x2 factorial scheme with three replications for the first growing season and 2x2 with five replications for the second growing season was used. Each experimental unit consisted of four plants spaced 0.75 m between plants and 1.00 m between rows. Factors consisted of irrigation using magnetically treated water, untreated water, three replacement of the crop evapotranspiration (50%, 75%, and 100% ETc) for the first growing season and two replacement of the crop evapotranspiration (75% and 100% ETc)...
Tipo: Info:eu-repo/semantics/article
Ano: 2019 URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/3809
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YIELD AND QUALITY OF BELL PEPPER FRUITS IRRIGATED WITH MAGNETICALLY TREATED WATER 196
Lorenzoni, Marcelo Zolin; Rezende, Roberto; Seron, Cássio de Castro; Souza, Álvaro Henrique Cândido de.
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...
Tipo: Info:eu-repo/semantics/article
Ano: 2021 URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6153
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