African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6214

Full Length Research Paper

Agronomic characteristics of sorghum in an agroforestry system with Eucalyptus in the semiarid region of minas gerais

Carlos Juliano Brant Albuquerque*
  • Carlos Juliano Brant Albuquerque*
  • Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais, ICA-UFMG Av. Universitária, no. 1000 Bairro Universitário, Montes Claros-MG, CEP: 39404 -547, Brasil.
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Walyson Silva Soares
  • Walyson Silva Soares
  • Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, ICIAG-UFU Av. Amazonas, s/n. Bloco 2E, Umuarama, Uberlândia-MG, CEP: 38400-902. CP. 593, Brasil.
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Regina Maria Quintao Lana
  • Regina Maria Quintao Lana
  • Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, ICIAG-UFU Av. Amazonas, s/n. Bloco 2E, Umuarama, Uberlândia-MG, CEP: 38400-902. CP. 593, Brasil.
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Gilberto Cardoso dos Santos
  • Gilberto Cardoso dos Santos
  • Universidade Estadual de Montes Claros, Endereço: Av. Reinaldo Viana, 2630, Bairro Bico da Pedra, Caixa Postal 91. Janaúba-MG Brasil.
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  •  Received: 10 May 2016
  •  Accepted: 20 July 2016
  •  Published: 18 August 2016

Abstract

The evaluation of agronomic characteristics of crops is important because they may be influenced by the height, density and spatial arrangements of eucalyptus in an agroforestry system. These silvicultural characteristics may interfere with height and   productivity of crops between the rows of the tree component due to shading, competition for water and nutrients. The objective of this study was to evaluate the effect of the assessed site on some agronomic characteristics such as height, grain yield and effective yield of BRS 655 forage sorghum (Sorghum bicolor (L). Moench) with different clones and arrangements of eucalyptus in the north of Minas Gerais. Experimental randomized block with a split-plot design and five replications was used to evaluate sorghum. The effective productivity and height of sorghum comparing to the average values  in the area were low. The GG 100 clone (Eucalyptus urophylla × E. grandis ) showed low adaptation to semi-arid region while the MA 2001 clone (Eucalyptus camaldulensis × E. Tereticornes) presented greater height. The low values of some agronomic characteristics of sorghum were due to the distance between the rows of eucalyptus. The 2 × 3 + (15 m) and 2 × 3 + (20 m) arrangements of eucalyptus generated higher sorghum plants regardless of the clone.

Key words: Effective productivity, arrangements, height, sorghum, clone.