COMPETITIVE ABILITY OF BEAN CULTIVARS WITH HAIRY BEGGARTICKS

Authors

  • Leandro Galon Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
  • Ricardo Trevisol Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
  • Cesar Tiago Forte Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
  • Siumar Pedro Tironi Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Chapecó, SC
  • Francisco Wilson Reichert Júnior Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
  • André Luiz Radunz Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Chapecó, SC

DOI:

https://doi.org/10.1590/1983-21252017v30n405rc

Keywords:

Phaseolus vulgaris. Bidens pilosa. Competitive interaction.

Abstract

Weed interference is a factor that limits the productivity of beans and, among these, hairy beggarticks is one of the main species competing with the crop for environmental resources. Thus, the aim of this study is to evaluate the competitive ability of black bean cultivars (BRS Campeiro, IPR Uirapuru, SCS204 Predileto and BRS Supremo) in the presence of a biotype of hairy beggarticks. The experimental design is a completely randomized block with four replications. Treatments were arranged in a replacement series, consisting of a proportion of the crop and the hairy beggarticks: 100:0; 75:25; 50:50: 24:75, and 0:100, which corresponds to 40:0, 30:10, 20:20, 10:30, and 0:40 plant pots1. We accomplished competitive analysis through diagrams applied to the replacement series, as well as using relative competitive indices. The leaf area and shoot dry mass were evaluated at 40 days after emergence of the species. There was competition between bean cultivars and hairy beggarticks for the same environmental resources, causing negative interference in the growth of the species, independent of the proportion of plants. Bean cultivars had a lower relative loss by reducing the morphological variables of the hairy beggarticks, thereby demonstrating superiority in its competitive ability in relation to the weed. Interspecific competition is less damaging than intraspecific competition for both species.

Author Biographies

  • Leandro Galon, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
    Doutor em Fitotecnia, Ciência das Plantas Daninhas pela UFV.
  • Ricardo Trevisol, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
    Aluno de Agronomia da Universidade Federal da Fronteira Sul
  • Cesar Tiago Forte, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
    Engenheiro Agrônomo formado pela UFFS e atual mestrando do PPGCTA da UFFS.
  • Siumar Pedro Tironi, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Chapecó, SC
    Engenheiro Agrônomo, Mestre e Doutor em Fitotecnia pela Universidade Federal de Viçosa e atual professor da UFFS, Câmpus Chapecó/SC.
  • Francisco Wilson Reichert Júnior, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Erechim, RS
    Engenheiro Agrônomo formado pela UFFS e atual mestrando do PPGCTA da UFFS.
  • André Luiz Radunz, Department of Agronomy, Universidade Federal da Fronteira Sul, Campus Chapecó, SC
    Engenheiro Agrônomo, Mestre e Doutor em Agronomia pela Universidade Federal de Pelotas e atual professor da UFFS, Câmpus Chapecó/SC.

Downloads

Published

14-06-2017

Issue

Section

Agronomy