Evaluation of intoxication caused by post-emerging herbicides in cassava culture in two times of application

Autores

  • Gilberto Coutinho Machado Filho Universidade Federal do Tocantins
  • Mauro Gomes Santos Universidade Federal do Tocantins
  • Julner Pachoute Universidade Federal do Tocantins
  • Jéssica Dayane Heinrich Universidade Federal do Tocantins
  • Rafaela Rodrigues Ribeiro Universidade Federal do Tocantins
  • Manoel Mota Santos Universidade Federal do Tocantins

DOI:

https://doi.org/10.48075/actaiguaz.v9i3.24326

Palavras-chave:

chemical control, Manihot esculenta, weed control

Resumo


This study aimed to evaluate the selectivity of post-emergent herbicides in cassava in two application times. The experiments were carried out in a greenhouse at the Federal University of Tocantins - UFT, Campus Gurupi. The experimental designed was completely randomized arranged in a 5x2 factorial scheme, composed by the combination of 5 herbicide molecules with different mechanisms of action (mesotrione, carfentrazone-ethyl, chlorimuron-ethyl, nicosulfuron and imazethapyr) applied in two seasons, 30 and 45 days after emergence (DAE), with four repetitions. The cultivar used was “Cacau melhorada”. The visual intoxication of the culture was evaluated. The results obtained were subjected to analysis of variance, by the F test, with the averages analyzed statistically by the LSD mean test, at 5% probability. The treatments based on mesotrione, and chlorimuron-ethyl were not toxic to the culture, promoting results similar to those observed for control. There were differences in the level of tolerance to the studied herbicides, between the times of application of the herbicides.

Biografia do Autor

Gilberto Coutinho Machado Filho, Universidade Federal do Tocantins

Doutorando em Produção Vegetal no Programa de Pós-graduação em Produção Vegetal

Mauro Gomes Santos, Universidade Federal do Tocantins

Doutorando em Produção Vegetal no Programa de Pós-graduação em Produção Vegetal

Jéssica Dayane Heinrich, Universidade Federal do Tocantins

Agronomia

Rafaela Rodrigues Ribeiro, Universidade Federal do Tocantins

Agronomia

Manoel Mota Santos, Universidade Federal do Tocantins

Professor Adjunto do curso de Graduação em Agronomia

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Publicado

16-11-2020

Como Citar

MACHADO FILHO, G. C.; SANTOS, M. G.; PACHOUTE, J.; HEINRICH, J. D.; RIBEIRO, R. R.; SANTOS, M. M. Evaluation of intoxication caused by post-emerging herbicides in cassava culture in two times of application. Acta Iguazu, [S. l.], v. 9, n. 3, p. 28–36, 2020. DOI: 10.48075/actaiguaz.v9i3.24326. Disponível em: https://e-revista.unioeste.br/index.php/actaiguazu/article/view/24326. Acesso em: 15 ago. 2022.

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Seção

ARTIGOS CIENTÍFICOS