| Registro completo |
| Provedor de dados: |
Planta Daninha
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| País: |
Brazil
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| Título: |
Herbicide resistant barnyardgrass in Iran and Turkey
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| Autores: |
Haghnama,Kianoosh
Mennan,Husrev
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| Data: |
2020-01-01
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| Ano: |
2020
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| Palavras-chave: |
Dose-response
Echinochloa crus-galli
Multiple-herbicide resistance
Rice
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| Resumo: |
Abstract Background: Inconsistent control of Barnyardgrass has been reported repeatedly by farmers in major rice growing areas of Iran and Turkey. Objective: Thus, a greenhouse study was conducted to investigate the resistance of Barnyardgrass to acetyl CoA carboxylase (cyhalofop-butyl) and acetolactate synthase (penoxsulam, bispyribac-sodium) inhibiting herbicides. Methods: The seeds were sown in pots in a greenhouse and after screening, were sprayed with various rates of cyhalofop-butyl, penoxsulam and bispyribac-sodium herbicides at 3-4 leaf stage. Four weeks later, the above ground biomass was cut, dried in an oven and weighted. The results were then analyzed in the R software (drc package) using a four or three parameter log-logistic function. All experiments were repeated twice. Results: While 30% of biotypes collected from Turkey were not controlled by ACCase inhibitors at twice the recommended rates, no resistance was observed in Iran’s samples. Only one biotype exhibited cross-resistant to penoxsulam and bispyribac-sodium in Iran, which was due to consecutive application of herbicides with modes of action similar to these herbicides. In contrast, several Turkish biotypes showed cross-resistance as well as multiple resistance to ACCase and ALS inhibitors. Conclusions: The rapid expansion of herbicide resistance in both countries indicate the necessity of adopting integrated weed management practices to hinder the further evolution of resistance in future.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100310
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| Editor: |
Sociedade Brasileira da Ciência das Plantas Daninhas
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| Relação: |
10.1590/s0100-83582020380100060
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| Formato: |
text/html
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| Fonte: |
Planta Daninha v.38 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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