African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6638

Full Length Research Paper

Foliar and time of application of silicon and the effect on rice yield components, productivity and seed quality

Jucilayne Fernandes Vieira
  • Jucilayne Fernandes Vieira
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Michele Nadal
  • Michele Nadal
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Lilian V. M. Tunes
  • Lilian V. M. Tunes
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Gabriel Duarte
  • Gabriel Duarte
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Ewerton Gewehr
  • Ewerton Gewehr
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Otávio Oliveira Corrêa
  • Otávio Oliveira Corrêa
  • Federal University of Pelotas, Post Graduate Course in Seed Science and Technology. 96 001-970, Pelotas, Rio Grande do Sul, Brazil.
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Acácio Figueiredo Neto
  • Acácio Figueiredo Neto
  • Federal University of São Francisco Valley-UNIVASF. Campus Juazeiro - Colegiado de Engenharia Agrícola e Ambiental, Av. Antonio Carlos Magalhães, n.510 - Country Clube. 48.902-300, Juazeiro - Bahia, Brazil.
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Marylia de Sousa Costa
  • Marylia de Sousa Costa
  • Federal University of São Francisco Valley-UNIVASF. Campus Juazeiro - Colegiado de Engenharia Agrícola e Ambiental, Av. Antonio Carlos Magalhães, n.510 - Country Clube. 48.902-300, Juazeiro - Bahia, Brazil.
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  •  Received: 08 May 2020
  •  Accepted: 04 September 2020
  •  Published: 31 December 2020

Abstract

The application of silicon (Si) has been beneficial to several cultures, mainly those considered Si accumulators, such as rice. Thus, in most cases Si is supplied via soil. However, it has been found that foliar application and small amounts of the element can be a viable alternative for its supply to plants. The objective of the present work was to evaluate the foliar application times of different silicon sources on yield components, productivity and seed quality of irrigated rice. The experiment was conducted in a greenhouse at the Federal University of Pelotas. The experimental design was completely randomized with four replicates. The treatments were: two sources of Si (Caulim®, 50 kg ha-1; and Sifol®, 3 L ha-1), three times of foliar application (tillering, bottling and flowering). Two distinct rice cultivars (IRGA 424 and Puitá Inta CL) were used. The production components evaluated were: Seed yield, number of panicles, and number of seeds per plant. For the evaluation of the physiological quality, the seeds were submitted to the tests of germination and first germination count. Seed health test was performed. To cultivate IRGA 424, the use of Caulim® and Sifol® in the drilling phase increased the number of seeds per panicle. Therefore, for both cultivars the use of silicon provided improvements in seed vigor. We conclude that the application of silica via foliar, through the Caulim® and Sifol®, to the cultivar IRGA 424 in the drilling phase, increases the number of seeds per panicle, and for both cultivars, it improves the vigor of the seeds, in addition to reducing the incidence of fungi.

Key words: Oryza sativa L., vigor, germination.