Data/hora: 07/06/2024 16:29:05

Biblioteca(s): | Epagri-Sede.
Data corrente: | 27/08/2015
Data da última atualização: | 27/08/2015
Autoria: | SANTOS, L. O.; PINTO, J. J. O.; PIVETA, L.; NOLDIN, J. A.; GALON, L.; CONCENÇO, G.
Título: | Carryover Effect of Imidazolinone Herbicides for Crops Following Rice.
Ano de publicação: | 2014
Fonte/Imprenta: | American Journal of Plant Science, http://www.scirp.org/journal/ajps, v. 5, p. 1049-1058, 2014.
Idioma: | Inglês

Conteúdo:

We aimed with this study to evaluate the effects of residual activity in soil of formulated mixtures
of the herbicides imazethapyr + imazapic and imazapyr + imazapic on ryegrass and on rice cultivars,
IRGA 424 and BRS Querencia. Two experiments were conducted under greenhouse in randomized
blocks design with four replications in split-plot and split-split-plot designs, respectively for the first (E1) and second (E2) experiments. For E1, main plots allocated herbicides (imazethapyr + imazapic and imazapyr + imazapic), and subplots the doses [(0, 0.5, 1.0, 1.5 and 2.0 fold the label dose of imazethapyr + imazapic (1 L&#8729;ha&#8722;1) and imazapyr + imazapic (140 g&#8729;ha&#8722;1) plus 0.5% of the adjuvant Dash®)]; for E2, sub-subplots allocated rice cultivars (BRS 424 and IRGA Querência). Phytotoxicity, plant height and shoot dry weight (E1 and E2) and plant stand (E2) were evaluated. Results showed that the annual ryegrass and rice cultivars IRGA 424 and BRS Querência are sensitive to imazethapyr + imazapic and imazapyr + imazapic, serving as bioindicators of its
residual activity in soils following Clearfield® rice. Imazapyr + imazapic, applied post-emergence
in irrigated rice at doses of 1.0, 1.5 and 2.0× the label dose, present longer residual activity in soil
compared to imazethapyr + imazapic for ryegrass and non-Clearfield® rice.

Palavras-Chave: | Clearfield®; Imidazolinones; Oryza sativa; Soil Persistence.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_36570.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (99363-1) - UPC - AP - DD -  -  -  - DIS