Interference and threshold level of Sida rhombifolia in transgenic soybean cultivars

Autores/as

  • Leandro Galon Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0002-1819-462X
  • Alessandro Konzen Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0002-2038-2478
  • Maico André Michelon Bagnara Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0003-4027-5650
  • Leonardo Brunetto Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0002-8252-6908
  • Ignacio Aspiazú State University of Montes Claros. Department of Agricultural Sciences. 39440-000. Janaúba. Minas Gerais. Brazil https://orcid.org/0000-0002-0042-3324
  • Antônio Marcos Loureiro da Silva Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0001-7198-8616
  • Daiane Brandler Federal University of Technology Paraná. Campus Pato Branco. Laboratory of Weed Science Research Centre. 85503- 390. Pato Branco. Paraná. Brazil https://orcid.org/0000-0002-3347-0522
  • Hugo Von Linsingen Piazzetta Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0002-5994-5338
  • André Luiz Radünz Federal University of Fronteira Sul. Campus Chapecó. Department of Agronomy. 89815-899. Chapecó. Santa Catarina. Brazil https://orcid.org/0000-0002-2397-011X
  • Gismael Francisco Perin Federal University of Fronteira Sul. Campus Erechim. Laboratory of Sustainable Management of Agricultural Systems. 99700-970. Erechim. Rio Grande do Sul. Brazil https://orcid.org/0000-0002-9036-0426

DOI:

https://doi.org/10.48162/rev.39.086

Palabras clave:

Glycine max, escoba dura, manejo integrado de malezas

Resumen

This study aimed to assess the interference and threshold level (TL) of Sida rhombifolia, the arrowleaf sida, competing with different soybean cultivars. The treatments comprised different soybean cultivars (NS 6909, NA 5909, DM 5958, Brasmax ELITE, Brasmax LANÇA, and SYN 13561) and densities of arrowleaf sida plants per square meter (m-2) (0, 2, 3, 4, 9, 15, 16, 23, 22, and 58; 0, 2, 3, 3, 6, 6, 10, 11, 18, and 47; 0, 3, 4, 7, 8, 10, 11, 13, 15, and 24; 0, 1, 4, 6, 12, 18, 19, 31, 44, and 50; 0, 4, 5, 6, 9, 13, 17, 20, 20, and 47; 0, 2, 3, 5, 9, 11, 15, 18, 29, and 30, respectively) for each cultivar. Cultivars NS 6909, NA 5909, and Brasmax Lança were more competitive than DM 5958, Brasmax Elite, and SYN 13561. The TL values varied from 0.55 to 0.95 plants m-2 for cultivars NS 6909, NA 5909, and Brasmax Lança, which exhibited greater competitiveness with arrowleaf sida. The lowest values of TL varied from 0.26 to 0.61 plants m-2 for cultivars DM 5958, Brasmax Elite, and SYN 13561, which had less competitiveness with weed.

Highlights

  • The rectangular hyperbola model adequately estimates the grain yield losses of soybean cultivars.
  • The density of arrowleaf sida plants was the variable that best fitted the rectangular hyperbola model.
  •  Soybean cultivars NS 6909 IPRO, NA 5909 RG, and Brasmax Lança IPRO are the most competitive in the presence of arrowleaf sida.
  • The levels of economic damage decrease with the increase in grain yield, in the soybean price, with the reduction in the cost of controlling arrowleaf sida and the herbicide efficiency.

 

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Publicado

19-12-2022

Número

Sección

Protección vegetal

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