Total chlorophyll and nutrients content in bean plants and weeds in competition

  • Victor Hugo Vidal Ribeiro Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Marcos Antônio da Silveira Júnior Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Gustavo Antônio Mendes Pereira Universidade Federal de Viçosa
  • Evander Alves Ferreira Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • Enilson de Barros Silva Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • José Barbosa dos Santos Universidade Federal dos Vales do Jequitinhonha e Mucuri
Keywords: Bidens pilosa, Competitive potential, Phaseolus vulgaris, Urochloa plantaginea

Abstract

Plants compete for several resources on soil, including water, light and nutrients which can affect crop yield and also weeds growth. Under the hypothesis that in different densities and weed communities, crops and weeds undergo changes in their nutritional contents of macro and micronutrients, the aim of this study was to quantify the nutritional contents of bean plants and weeds cultivated in increasing densities (0, 74, 147, 221 and 295 plants m-2) and the effect of the association of plants (isolated bean, bean + Urochloa plantaginea, bean + Bidens pilosa and bean + Urochloa plantaginea + Bidens pilosa). The contents of macro and micronutrients were evaluated. The increase in plant density promoted a decrease in the total chlorophyll content of bean plants and weeds, as well as a decrease in macronutrients (K and P) and micronutrients (Zn, Fe, Mn and Cu). In the arrangement where the greatest number of species were cultivated simultaneously and in increasing densities, a greater reduction in total chlorophyll content and in macro and micronutrient contents of the three species (crops and weeds) were observed.

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Author Biographies

Victor Hugo Vidal Ribeiro, Universidade Federal dos Vales do Jequitinhonha e Mucuri
Graduando em Agronomia/UFVJM
Marcos Antônio da Silveira Júnior, Universidade Federal dos Vales do Jequitinhonha e Mucuri
Departamento de Agronomia/UFVJM
Gustavo Antônio Mendes Pereira, Universidade Federal de Viçosa
Departamento de Fitotecnia
Evander Alves Ferreira, Universidade Federal dos Vales do Jequitinhonha e Mucuri
Departamento de Agronomia/UFVJM
Enilson de Barros Silva, Universidade Federal dos Vales do Jequitinhonha e Mucuri
Professor/Departamento de Agronomia/UFVJM
José Barbosa dos Santos, Universidade Federal dos Vales do Jequitinhonha e Mucuri
Professor de Plantas Daninhas/Departamento de Agronomia/UFVJM
Published
01-02-2018
How to Cite
Ribeiro, V. H. V., da Silveira Júnior, M. A., Pereira, G. A. M., Ferreira, E. A., Silva, E. de B., & dos Santos, J. B. (2018). Total chlorophyll and nutrients content in bean plants and weeds in competition. Comunicata Scientiae, 8(2), 307-315. https://doi.org/10.14295/cs.v8i2.2173
Section
Original Article