African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

BRS Gabriela (Ricinus communis L.) castor bean seedlings in function of substrate and container volume

Francisco Helio Alves de Andrade
  • Francisco Helio Alves de Andrade
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Carla Sabrina Pereira de Araujo
  • Carla Sabrina Pereira de Araujo
  • Programa de Pós-Graduação em Fitotecnia, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil.
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Ronimeire Torres da Silva
  • Ronimeire Torres da Silva
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Anselmo Ferreira da Silva
  • Anselmo Ferreira da Silva
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Maria de Fatima de Queiroz Lopes
  • Maria de Fatima de Queiroz Lopes
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Miguel Avelino Barbosa Neto
  • Miguel Avelino Barbosa Neto
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Felipe Rafael Linhares dos Santos
  • Felipe Rafael Linhares dos Santos
  • Centro de Ciências Humanas de Agrarias, Universidade Estadual da Paraíba, Catolé do Rocha, PB, Brazil.
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Kadson Emmanuel Frutuoso Silva
  • Kadson Emmanuel Frutuoso Silva
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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Rosinaldo de Sousa Ferreira
  • Rosinaldo de Sousa Ferreira
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Campus II, Rodovia PB 079 - Km 12, 58.397-000, Areia, Paraíba, Brazil.
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  •  Received: 29 July 2017
  •  Accepted: 29 August 2017
  •  Published: 21 September 2017

Abstract

Castor bean (Ricinus communis L.) is an oleaginous of high economic value because its oil has numerous applications in the industry, such as in the manufacture of enamels and paints. Presently, its production is aimed at being used as a biodiesel. The main obstacle to a high production is the survival of the young plants in field in a no-tillage system. An alternative would be the production of seedlings. The objective of this research was to evaluate the initial growth of BRS Gabriela (R. communis L.) castor bean seedlings in function of different substrates and container volumes. The work was conducted at the nursery of the State University of Paraíba (UEPB), Catolé do Rocha, PB, Brazil. The experimental design was completely randomized (CRB) in a 4 × 2 factorial design with 6 replications. The factors consisted of 4 container volumes: 1, 0.5, 0.3, and 0.27 dm-3 and 2 substrates (S1 = 50% soil and 50% earthworm humus, and S2 = 40% soil, 30% earthworm humus and 30% sand). The analyzed variables were stem dry matter (SDM), root dry matter (RDM), plant leaf area (PLA), leaf biomass (LPM), stem biomass (SPM), water content (WC), plant height and stem diameter ratio (PHe/SD), root dry matter and dry shoot dry matter ratio (RDM/SDM), Dickson quality index (DQI) and succulence. The morphological characteristics were influenced by container volume and substrate. The largest container volume, together with the substrate S1 (50% soil and 50% earthworm humus), provided viable seedlings ready to be transplanted to the field.
 
 
Key words: Ricinus communis L., Initial growth, greenhouse, earthworm humus.