African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Initial growth of African mahogany plants in response to zinc fertilization

Matheus da Silva Araujo
  • Matheus da Silva Araujo
  • University of Brasília, Campus Darcy Ribeiro, C P 4357, CEP 70910-900, Brasília, DF, Brazil.
  • Google Scholar
Stephany Diolino Cunha
  • Stephany Diolino Cunha
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil
  • Google Scholar
Karolayne Lemes D’Abadia
  • Karolayne Lemes D’Abadia
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil
  • Google Scholar
Yago Cesar Rodrigues Morais
  • Yago Cesar Rodrigues Morais
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil
  • Google Scholar
Ednaldo Candido Rocha
  • Ednaldo Candido Rocha
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil
  • Google Scholar
Vitor Correa de Mattos Barretto
  • Vitor Correa de Mattos Barretto
  • State University of Paulista, Campus de Dracena, Highway Cmte. João Ribeiro de Barros, km 651, Neighborhood of Antas, CEP 17900-000, Dracena, SP, Brazil.
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Gustavo Matos Coelho
  • Gustavo Matos Coelho
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil
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  •  Received: 26 January 2017
  •  Accepted: 20 February 2017
  •  Published: 23 March 2017

Abstract

African mahogany (Khaya senegalensis A. Juss) has been an important option to supply the increasing demand for noble forest products for the Brazilian furniture industry. In the present study, the objective was to evaluate the initial development of mahogany plants in response to different doses of zinc. The experiment was carried out inside a greenhouse, in the experimental area of the State University of Goiás, Ipameri Campus, in 7 dm3 plastic containers, and using soil samples, identified as Dystrophic Red-Yellow Latosol (Oxisol), as substrate. The experimental design was completely randomized, with five treatments and five replications, totaling 25 experimental units. The treatments consisted of five Zn concentrations: 0, 2.5, 5, 10 and 20 mg dm-3, obtained by zinc sulfate fertilizer. At 150 days, the measurements of the plant height, the root crown diameter, dry matter mass of leaves, stem, root and total were evaluated. The tested increasing zinc doses did not promote increased plant growth. African mahogany presented low zinc requirement in the early stages of development for the studied edaphoclimatic condition, and no application of zinc via fertilizers was required. This fact may resulting from the natural concentration of 0.2 mg dm-3 of Zn in the used soil, which was enough to supply the nutritional demand of the plants in the first five months of development.

 

Key words: Khaya senegalensis A. Juss, morphology, micronutrient.