EFICÁCIA DE HERBICIDAS NO MANEJO OUTONAL DE Richardia brasiliensis, Commelina benghalensis, Conyza sumatrensis E Digitaria insularis
DOI:
https://doi.org/10.14393/BJ-v38n0a2022-53544Palavras-chave:
Chemical Control, Glyphosate, Resistance, Tolerance, Weeds.Resumo
Outros herbicidas, isolados ou em associações com glyphosate, podem ser eficazes no controle de Richardia brasiliensis, Commelina benghalensis, Conyza sumatrensis e Digitaria insularis. Portanto, o objetivo deste estudo foi avaliar o a eficácia de herbicidas, isolados e em associações, no controle destas plantas daninhas no período de entressafra. Foram conduzidos três experimentos compostos pela aplicação de herbicidas, isolados ou em associações. Os experimentos 1 e 2 foram conduzidos em Palotina, estado do Paraná (PR), Brasil. O experimento 3 em Iporã, PR, Brasil. Os três durante o outono de 2017 após a colheita da soja. O delineamento experimental utilizado foi em blocos casualizados com 4 repetições, foi avaliado o controle de plantas daninhas aos 7, 14, 21, 28, 35 e 42 dias após a aplicação (DAA). Foi avaliado o controle de R. brasiliensis e C. benghalensis nos três experimentos, o controle de C. sumatrensis nos experimentos 1 e 2, enquanto D. insularis apenas no experimento 3. Os dados foram submetidos a análise de variância e teste F (p < 0,05). As médias dos tratamentos dos experimentos 1 e 2 foram comparadas pelo teste de Tukey (p < 0,05), e as médias dos tratamentos do experimento 3 foram agrupadas pelo teste de Scott e Knott (p < 0,05). As associações de herbicidas foram eficazes no controle de R. brasiliensis, C. benghalensis, em aplicação única ou com aplicação sequencial. As associações de herbicidas foram eficazes no controle de C. sumatrensis, com aplicação sequencial. As associações de herbicidas, em aplicação única, não proporcionaram controle final satisfatório (≥ 80%) para D. insularis.
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Copyright (c) 2022 Aderlan Ademir Bottcher, Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Eduardo Seity Furlan Kashivaqui, Marcelo Cassol, Cristian Natalino Zanfrilli de Souza, Felipe Gustavo Wagner, André Felipe Moreira Silva
Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.
