African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6914

Full Length Research Paper

Influence of Uroclhoa brizantha cv. Marandu phytomass in the control of Bidens subalternans under dystrophic yellow latossol

Adaniel Sousa dos Santos
  • Adaniel Sousa dos Santos
  • Departament of Agriculture, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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João Batista da Silva Oliveira
  • João Batista da Silva Oliveira
  • Departament of Agriculture, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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Wéverson Lima Fonseca
  • Wéverson Lima Fonseca
  • Departament of Agriculture, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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Tiago de Oliveira Sousa
  • Tiago de Oliveira Sousa
  • Departament of Agriculture, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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Leandro Pereira Pacheco
  • Leandro Pereira Pacheco
  • Departament of Agriculture, Campus Universitário de Rondonópolis, UFMT, 78735-901, Rondonópolis, MT, Brazil.
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Aline Sousa dos Santos
  • Aline Sousa dos Santos
  • Departament of Biology, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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Lisânia de Castro Medeiros
  • Lisânia de Castro Medeiros
  • Departament of Biology, Campus Professora Cinobelina Elvas, UFPI, 64900-000, Bom Jesus, PI, Brazil.
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Alan Mario Zuffo
  • Alan Mario Zuffo
  • Departament of Agriculture, Campus Universitário, UFLA, 37200-000, Lavras, MG, Brazil.
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  •  Received: 20 September 2015
  •  Accepted: 16 October 2015
  •  Published: 12 November 2015

Abstract

The objective of this work was to evaluate the interference resulting from the use of different phytomass quantities of Uroclhoa brizantha cv. Marandu and the management of straw to control beggar-ticks (Bidens subalternans). The experiment was performed under greenhouse from May to August, 2014, using a randomized block experimental design with four replicates, in a factorial scheme (3 × 4) + 1, with Factor A constituted by three management methods (incorporated, incorporated+surface and surface), and Factor B constituted by five straw levels (3; 6; 9 and 12 t ha-1), plus one treatment without the usage of any cover plant (control treatment). The variables evaluated were the total number of plants emerged, the index of emergence velocity, dry phytomass of the aerial plant portion, leaf area, dry phytomass of roots and the volume of roots. Different management methods at different straw levels were efficient, with an emphasis to the surface management in the suppression of beggar-ticks (B. subalternans).       

 

Key words: Allelopathy, beggar-tick, Brachiaria brizantha, weed