Relative yield of wheat in coexistence with concurrent plants as indicator of competitiveness

  • Marcela Reinehr Mestranda do Programa de Pós-graduação em Agronomia: Agricultura e Ambiente – PPGAAA/UFSM, Campus Frederico Westphalen
  • Fabiane Pinto Lamego Embrapa Pecuária Sul
  • Sabrina Tolloti Peruzzo Graduanda do Curso de Agronomia da Universidade Federal de Santa Maria – UFSM, Campus de Frederico Westphalen
  • Fernanda Cassiane Caratti Graduanda do Curso de Agronomia da Universidade Federal de Santa Maria – UFSM, Campus de Frederico Westphalen
  • Mirian Fracasso Fabiani Graduanda do Curso de Agronomia da Universidade Federal de Santa Maria – UFSM, Campus de Frederico Westphalen
  • Marinês Mazzon Graduanda do Curso de Agronomia da Universidade Federal de Santa Maria – UFSM, Campus de Frederico Westphalen

Abstract

One of the factors that limit the yield of wheat is the weed competition, being the competitive potential of plants affected by their morphophysiological characteristics. The objective of this study was to determine the competitiveness of wheat when in coexistence with Italian ryegrass (Lolium multiflorum) and radish (Raphanus sativus) competitive plants or with wheat as simulator competition plant. There were realized four experiments in the greenhouse of the Agricultural Department of Environmental Sciences of the UFSM, Campus of Frederico Westphalen – RS, during July to September, 2012. The treatments were arranged in a replacement series, in the proportions of 100:00 (wheat monoculture), 75:25, 50:50, 25:75 and 100:00 (competitor plant monoculture) for wheat plants (cv. Fundacep Cristalino) and for Italian ryegrass, radish and wheat (cv. BRS Guamirim) as competitor plants. The wheat is more competitive than Italian ryegrass in initial coexistence, even in the smallest proportion of plants. The radish when intercropped with wheat demonstrates similar competitive potential for environmental resources to the crop. There is mutual beneficial effect when wheat cultivars Fundacep Cristalino and BRS Guamirim coexisted, and each cultivar seems to have mechanism to avoid competition.

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Author Biography

Fabiane Pinto Lamego, Embrapa Pecuária Sul
possui graduação em Agronomia pela Universidade Federal de Pelotas (2002), mestrado em Fitotecnia pela Universidade Federal do Rio Grande do Sul (2004) e doutorado em Fitotecnia pela Universidade Federal do Rio Grande do Sul (2008), com doutorado sanduíche na University of Arkansas, EUA, no período de Mar/2007 a Fev/2008. Foi Professora Adjunta da Universidade Federal de Santa Maria - UFSM, Campus de Frederico Westphalen-RS (2009 a 2013) e do Departamento de Fitossanidade da Universidade Federal de Pelotas - UFPel (2013 a 2014). Atualmente é Pesquisadora da Empresa Brasileira de Pesquisa Agropecuária - Embrapa Pecuária Sul.
Published
04-11-2018
How to Cite
Reinehr, M., Lamego, F. P., Peruzzo, S. T., Caratti, F. C., Fabiani, M. F., & Mazzon, M. (2018). Relative yield of wheat in coexistence with concurrent plants as indicator of competitiveness. Comunicata Scientiae, 9(3), `332-339. https://doi.org/10.14295/cs.v9i3.1347
Section
Original Article