African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Rooting inducers and organic substrates in the propagation of 'Paluma' guava by cutting

Jussara Cristina Firmino da Costa*
  • Jussara Cristina Firmino da Costa*
  • Doutoranda, Departamento de Fitotecnia, Universidade Federal de Viçosa (UFV), Avenida Peter Henry Rolfs, s/n, Campus UFV, Viçosa, MG, Brasil.
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Rejane Maria Nunes Mendonca
  • Rejane Maria Nunes Mendonca
  • Programa de Pós-Graduação em Agronomia, Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brasil.
  • Google Scholar
Leandro Firmino Fernandes
  • Leandro Firmino Fernandes
  • Programa de Pós-Graduação em Agronomia, Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brasil.
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Gerciane Cabral da Silva
  • Gerciane Cabral da Silva
  • Empresa Estadual de Pesquisa Agropecuária, PB 008, Km 7, s/n, Costa do Sol, João Pessoa-PB, 58.033-455, Brasil.
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Silvanda de Melo Silva
  • Silvanda de Melo Silva
  • Programa de Pós-Graduação em Agronomia, Departamento de Ciências Fundamentais e Sociais, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brasil.
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Walter Esfrain Pereira
  • Walter Esfrain Pereira
  • Programa de Pós-Graduação em Agronomia, Departamento de Ciências Fundamentais e Sociais, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brasil.
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Lourival Ferreira Cavalcanti
  • Lourival Ferreira Cavalcanti
  • Programa de Pós Graduação em Agronomia, pesquisador INCTSal. Universidade Federal da Paraíba, CEP: 58.397-000, Areia-PB, Brasil.
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Lucimara Ferreira de Figueiredo
  • Lucimara Ferreira de Figueiredo
  • Programa de Pós-Graduação em Agronomia, Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brasil.
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  •  Received: 14 October 2016
  •  Accepted: 13 January 2017
  •  Published: 02 February 2017

Abstract

To produce seedlings with quality is one of the factors that mostly contribute to increase the production chain of a fruit crop. The use of organic substrates in the production of seedlings becomes a way to reduce costs by using raw material available regionally. Then, the aim of this study was to evaluate the influence of rooting inducers and the contribution of organic substrates to improve the rooting of herbaceous cuttings of 'Paluma' guava. The experiment was completely randomized arranged in a 5×2 factorial design with 4 replications and 10 cuttings per plot. The factors comprised five substrates (S1-100% OC; S2-25% CRH + 75% OC; S3-50% CRH + 50% OC; S4-75% CRH + 25% OC; S5-100% CRH), where CRH: carbonized rice husk and OC: organic compost, and 2 rooting inducers (Radimaxi 20® and Indolbutyric Acid - IBA), with the concentration of 2000 mg L-1. With regard to the analyzed variables, rooting, mortality, length of roots, and dry weight of shoots and roots did not fit with any regression model. However, the live rootless cuttings, callus, sprouting, leaf retention, and number of roots showed interaction between the inducers and the used substrates. The maximum rooting percentage obtained was 20%, independently of the type of inducer or used substrate; the use of Radimaxi 20® provides greater percentage of cuttings with callus and live rootless cuttings; the carbonized rice husk in composition S2 (25% CRH + 75% OC) is indicated to compose the rooting substrate of 'Paluma' guava cuttings; despite the satisfactory results obtained in this work, more studies are needed to clarify the rhizogenic process of guava in diversified conditions.

Key words: Indolbutyric acid, vegetative propagation. Radimaxi 20®.