Data/hora: 16/06/2024 07:12:23

Provedor de dados: | 87
País: | Brazil
Título: | Behavior of Bradyrhizobium japonicum strains under different herbicide concentrations
Autores: | Arruda,J.S.; Lopes,N.F.; Moura,A.B.
Data: | 2001-04-01
Ano: | 2001
Palavras-chave: | Rhizobium; Clomazone; Imazaquin; Sulfentrazone.
Resumo: | The Bradyrhizobium japonicun strains SEMIA 5073, SEMIA 5074, SEMIA 5079 and SEMIA 5080 were grown in vitro using Vincent medium combined with different rates of the herbicides imazaquin (0, 0.04, 0.12, 0.24, 0.36 mg a.i. g-1), clomazone (0, 0.4, 0.8, 1.6 and 3.2 mg a.i. g-1) and sulfentrazone (0, 0.2, 0.4, 0.8 and 1.6 mg a.i. g-1) to evaluate the strains tolerance to herbicides. The three herbicides drastically inhibited all the rhizobium strains tested, showing a significant decrease of the CFU number as a function of herbicide rates. The rhizobium strains presented a differentiated tolerance to the herbicides. The herbicide rates that reduced 50% (I50) of the growth or survival of the rhizobium strains were below the recommended sprayed rates for weed control in the soybean crop, for all the three herbicides studied; however, sulfentrazone I50 was smaller than imazaquin and clomazone I50.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582001000100013
Editor: | Sociedade Brasileira da Ciência das Plantas Daninhas
Relação: | 10.1590/S0100-83582001000100013
Formato: | text/html
Fonte: | Planta Daninha  v.19 n.1 2001
Fonte: | info:eu-repo/semantics/openAccess