Competitive ability of sweet sorghum cultivars against hairy beggarticks

  • Leandro Galon Universidade Federal da Fronteira Sul
  • Carlos Orestes Santin
  • André Luiz Radünz Universidade Federal da Fronteira Sul
  • Germani Concenço
  • André Andres
  • Alexandre Ferreira da Silva
  • Felipe Nonemacher Universidade Federal da Fronteira Sul
  • Gismael Francisco Perin Universidade Federal da Fronteira Sul
  • Ignácio Aspiazú
Keywords: Bidens pilosa, plant interaction, Sorghum bicolor, additive series, plant proportion, plant competition

Abstract

Among the weeds that cause interference with the growth and development of sweet sorghum stands out beggarticks, especially by that present high competitive ability by the resources available in the middle. The aim of this study is to compare the competitive ability of sweet sorghum (Sorghum bicolor (L.) Moench) against hairy beggarticks (Bidens pilosa L.), as a function of cultivar and plant proportion. Experiments were conducted into greenhouse in completely randomized design, with four replications. Treatments were arranged in replacement series in the proportions of 100:0, 75:25, 50:50, 25:75 and 0:100% (sorghum:weed) which amounted to 20:0, 15:5, 10:10, 5:15 and 0:20 plants per pot of sweet sorghum (cultivars BRS 506, BRS 509 or BRS 511) against hairy beggarticks. Fifty days after emergence, plant leaf area (LA), aboveground dry mass (DM), photosynthesis (A) and transpiration (E) rates were assessed. Competitive ability was analyzed by using the graphical analysis method, building diagrams based on total and relative productivity. Competitiveness, clustering coefficient and aggressiveness were also determined. Sorghum cultivars, in general terms, were harmed independently of the proportion of hairy beggarticks. There were small differences in competitive ability among sorghum cultivars; BRS 509 demonstrated to be slightly higher competitive than BRS 506 and BRS 511 against hairy beggarticks. This, however, is unlikely to provide competitive advantage for BRS 509 in production fields and hairy beggarticks should be efficiently controlled early in crop cycle to avoid productivity losses, independently of sorghum cultivar.

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Author Biographies

Carlos Orestes Santin

Agronomy academic, of Universidade Federal da Fronteira Sul, Campus Erechim/RS/Brazil;

André Luiz Radünz, Universidade Federal da Fronteira Sul

Agronomist engineer, master and doctor in Agronomy and current professor of undergraduate and graduate studies in Phytotechnics at Universidade Federal da Fronteira Sul, Campus Erechim/RS/Brazil.

Germani Concenço

Agronomist engineer, master and doctor in Phytotechnics and current Researcher of Embrapa Clima Temperado and professor of undergraduate in Plant physiology at Universidade Federal de Pelotas, Capão do Leão/RS/Brazil.

André Andres

Agronomist engineer, PhD. in Agriculture, Forest and Food Sciences and professor of undergraduate in Plant health at Universidade Federal de Pelotas, Capão do Leão/RS/Brazil.

 

Alexandre Ferreira da Silva

Agronomist Engineer, master and doctor in Phytotechnics and current Researcher of Embrapa Milho e Sorgo, Sete Lagoas/MG/Brazil.

Felipe Nonemacher, Universidade Federal da Fronteira Sul

Agronomy academic, of Universidade Federal da Fronteira Sul, Campus Erechim/RS/Brazil.

Gismael Francisco Perin, Universidade Federal da Fronteira Sul

Gismael Francisco Perin: Agronomist Engineer, master and doctor in Rural Engineering and current professor graduate studies in Herbology at Universidade Federal da Fronteira Sul, Campus Erechim/RS/Brazil.

Ignácio Aspiazú

D.Sc. in Plant Production and permanent professor of undergraduate and graduate studies in Weed Science at Universidade Estadual de Montes Claros, Campus Janauba/MG/Brazil.

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Published
2022-05-26
How to Cite
Galon, L., Santin, C., Radünz, A., Concenço, G., Andres, A., Silva, A., Nonemacher, F., Perin, G., & Aspiazú, I. (2022). Competitive ability of sweet sorghum cultivars against hairy beggarticks. Revista De Ciencias Agrícolas, 39(1). Retrieved from https://revistas.udenar.edu.co/index.php/rfacia/article/view/5937