Data/hora: 13/06/2024 05:06:40

Provedor de dados: | Scientia Agricola
País: | Brazil
Título: | Resistance and differential susceptibility of Bidens pilosa and B. subalternans biotypes to ALS-inhibiting herbicides
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.
Data: | 2006-04-01
Ano: | 2006
Palavras-chave: | Imidazolinone; Sulfonylurea; Hairy beggarticks; Soybean.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200005
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162006000200005
Formato: | text/html
Fonte: | Scientia Agricola  v.63 n.2 2006
Fonte: | info:eu-repo/semantics/openAccess