Pre-sowing horseweed control in soybean crops in Goiás, Brazil

Authors

  • Werleis Alvez Diniz University Center of Southwest Goiano, UniBRAS, Rio Verde, Goias, Brazil
  • Fernando Rezende Côrrea DeLollo Research Station, Rio Verde, Goias, Brazil https://orcid.org/0000-0001-7110-3611
  • Nelmício Furtado da Silva University of Rio Verde, UniRV, Rio Verde, Goias, Brazil https://orcid.org/0000-0001-7055-8075
  • Wendson Soares da Silva Cavalcante University of Rio Verde, UniRV, Rio Verde, Goias, Brazil https://orcid.org/0000-0002-5224-5486
  • Daniele Ferreira Ribeiro GPAC – Cerrado Agriculture Research Group, Rio Verde, Goias, Brazil
  • Estevão Rodrigues MRE Agropesquisa, Rio Verde, Goias, Brazil

DOI:

https://doi.org/10.14295/bjs.v2i3.268

Keywords:

Conyza bonariensis, Conyza genus, glyphosate, Glycine max, field control, phytotoxicity

Abstract

Brazil is one of the world's largest soy producers. Horseweed plants stand out as weeds with great interference in the culture and resistant to the Glyphosate molecule worldwide. The experiment was carried out at the experimental station of MRE Agropesquisa, located in Rio Verde, Goiás, Brazil. A randomized block experimental design with nine treatments and four replications was used. The herbicide treatments were sprayed 21 days before sowing the soybean crop, with homogeneous coverage of the foliage in periods that provided the best environmental conditions for spraying. The evaluation of horseweed (% control) were carried out at 7, 14 and 21 DAA (days after application) using a visual scale with grading. At the end of the crop cycle, the harvest was carried out and the control data of the horseweed and yield plants were submitted to analysis of variance (p < 0.05) and when significant were submitted to the Tukey's 5% test. The tank mixture of Glyphosate + Gluphosinate + Saflufenacil, respectively at a dose of 2.0 + 3.0 + 0.07 Kg or L of p.c ha-1 provided the highest average control of horseweed plants at 21DAA. The association of Glyphosate + 2.4 D at doses of 3.0 + 1.2 L of p.c ha-1 provided the highest crop yield. The tank mix of products with systemic and non-systemic action when synergistic can positively interfere in the control of Conyza spp.

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Published

2023-03-01

How to Cite

Diniz, W. A., Côrrea, F. R., Silva, N. F. da, Cavalcante, W. S. da S., Ribeiro, D. F., & Rodrigues, E. (2023). Pre-sowing horseweed control in soybean crops in Goiás, Brazil . Brazilian Journal of Science, 2(3), 82–91. https://doi.org/10.14295/bjs.v2i3.268

Issue

Vol. 2 No. 3 (2023): Brazilian Journal of Science

Section

Agrarian and Biological Sciences

License

Copyright (c) 2023 Werleis Alvez Diniz, Fernando Rezende Côrrea, Nelmício Furtado da Silva, Wendson Soares da Silva Cavalcante, Daniele Ferreira Ribeiro, Estevão Rodrigues

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