Herbicide efficacy in the fall management of Richardia brasiliensis, Commelina benghalensis, Conyza sumatrensis AND Digitaria insularis

Authors

  • Aderlan Ademir Bottcher Universidade Estadual de Maringá
  • Alfredo Junior Paiola Albrecht Universidade Federal do Paraná https://orcid.org/0000-0002-8390-3381
  • Leandro Paiola Albrecht Universidade Federal do Paraná
  • Eduardo Seity Furlan Kashivaqui Universidade Estadual de Maringá
  • Marcelo Cassol Universidade Federal do Paraná
  • Cristian Natalino Zanfrilli de Souza Universidade Federal do Paraná
  • Felipe Gustavo Wagner Universidade Federal do Paraná
  • André Felipe Moreira Silva Crop Science Pesquisa e Consultoria Agronômica https://orcid.org/0000-0002-4846-8089

DOI:

https://doi.org/10.14393/BJ-v38n0a2022-53544

Keywords:

Chemical Control, Glyphosate, Resistance, Tolerance, Weeds.

Abstract

Other herbicides, alone or in combination with glyphosate, may be effective in controlling Richardia brasiliensis, Commelina benghalensis, Conyza sumatrensis e Digitaria insularis. Therefore, the aim of this study was to evaluate the efficacy of herbicides, alone or in combination, in the control of these weeds in the off-season. Three composite experiments were conducted by applying herbicides, alone or in combinations. Experiments 1 and 2 were conducted in Palotina, State of Paraná (PR), Brazil. Experiment 3 in Iporã, PR, Brazil. The three during fall 2017 in fallow areas after soybean harvest. The experiment was a randomized complete block design with 4 replications and weed control at 7, 14, 21, 28, 35, and 42 days after application (DAA). The control of R. brasiliensis and C. benghalensis was evaluated in the three experiments, the control of C. sumatrensis, in experiments 1 and 2, while the control of D. insularis was evaluated only in experiment 3. Data were subjected to analysis of variance and F-test (p < 0.05). The treatment means values of experiments 1 and 2 were compared by Tukey’s test (p < 0.05), and the treatment mean values of experiment 3 were grouped by the Scott and Knott test (p < 0.05). Some herbicide combinations were effective in controlling R. brasiliensis, C. benghalensis, in a single or sequential application. Herbicide combinations were effective in controlling C. sumatrensis with sequential application. Herbicide combinations in a single application did not provide satisfactory final control (≥ 80%) for D. insularis.

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References

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Published

2022-03-31

How to Cite

BOTTCHER, A.A., ALBRECHT, A.J.P., ALBRECHT, L.P., KASHIVAQUI, E.S.F., CASSOL, M., SOUZA, C.N.Z. de, WAGNER, F.G. and SILVA, A.F.M., 2022. Herbicide efficacy in the fall management of Richardia brasiliensis, Commelina benghalensis, Conyza sumatrensis AND Digitaria insularis. Bioscience Journal [online], vol. 38, pp. e38025. [Accessed10 August 2022]. DOI 10.14393/BJ-v38n0a2022-53544. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/53544.

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Section

Agricultural Sciences