| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Resistance and differential susceptibility of Bidens pilosa and B. subalternans biotypes to ALS-inhibiting herbicides
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| Autores: |
López-Ovejero,Ramiro Fernando
Carvalho,Saul Jorge Pinto de
Nicolai,Marcelo
Abreu,Aluana Gonçalves
Grombone-Guaratini,Maria Tereza
Toledo,Roberto Estevão Bragion
Christoffoleti,Pedro Jacob
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| Data: |
2006-04-01
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| Ano: |
2006
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| Palavras-chave: |
Imidazolinone
Sulfonylurea
Hairy beggarticks
Soybean
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| Resumo: |
The frequent application of herbicides in agricultural areas may select resistant biotypes in weed populations, whose biological characteristics influence the speed and patterns of resistance. This research aims to charactere, simultaneously, resistance patterns and differential susceptibility of Bidens pilosa and B. subalternans biotypes to ALS-inhibiting herbicides of the imidazolinone and sulfonylurea chemical groups. Six hairy beggarticks biotypes, four suspected resistant and two known susceptible, were treated with eight rates of chlorimuron-ethyl or imazethapyr, in greenhouse conditions. Percent control and percent fresh weight of the plants were evaluated at 28 days after the application. B. subalternans is less susceptible to ALS-inhibiting herbicides than B. pilosa; B. subalternans biotypes were more resistant than B. pilosa biotypes; there are B. pilosa and B. subalternans biotypes with cross resistance to the ALS-inhibiting herbicides of the sulfonylurea and imidazolinone groups; there are different patterns of cross resistance to the diverse groups of ALS-inhibiting herbicides.
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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=S0103-90162006000200005
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162006000200005
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.63 n.2 2006
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| Direitos: |
info:eu-repo/semantics/openAccess
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