Effect of water stress on herbicide efficiency applied to Urochloa decumbens

This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in a greenhouse at the Department of Plant Producti...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Rocha-Pereira,Maria R, Klar,Antônio E, Martins,Dagoberto, Ferreira de Souza,Guilherme S, Villalba,Juana
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2012
Materias:	chemical control graminicide water restriction weed
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100018
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-16202012000100018
record_format	dspace
spelling	oai:scielo:S0718-162020120001000182014-11-05Effect of water stress on herbicide efficiency applied to Urochloa decumbensRocha-Pereira,Maria RKlar,Antônio EMartins,DagobertoFerreira de Souza,Guilherme SVillalba,Juana chemical control graminicide water restriction weed This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in a greenhouse at the Department of Plant Production, Faculty of Agronomic Sciences, UNESP, Botucatu, São Paulo. The experimental design was a completely randomized design with four replications, consisting of a 9 x 4 factorial, combined with three water management systems (-0.03, -0.07 and -1.5 MPa) and three herbicides (fluazifop-p-butyl, haloxyfop-methyl and sethoxydim + oil using four doses (100, 50, 25 and 0% of the recommended dose). Herbicide applications were conducted at two vegetative stages for all species: a 4-6 leaf stage and a 2-3 tiller stage. The physiological parameters evaluated were as follows: photosynthetic rate, stomatal conductance, transpiration, leaf temperature and plant dry matter. The visual assessments of phytotoxicity were performed 28 days after herbicide application. The control efficiency was lower in plants grown under soil water potential conditions of -1.5 MPa, regardless of the herbicide used during the two application stages; however, none reached 100% control. Fractionation of the recommended herbicide doses reduced effectiveness, with the exception of the 50%-dose application of sethoxydim and fluazifop-p-butyl herbicides, which were also effective in the 4-6 leaf plant control under normal water conditions.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.39 n.1 20122012-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100018en10.4067/S0718-16202012000100018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	chemical control graminicide water restriction weed
spellingShingle	chemical control graminicide water restriction weed Rocha-Pereira,Maria R Klar,Antônio E Martins,Dagoberto Ferreira de Souza,Guilherme S Villalba,Juana Effect of water stress on herbicide efficiency applied to Urochloa decumbens
description	This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in a greenhouse at the Department of Plant Production, Faculty of Agronomic Sciences, UNESP, Botucatu, São Paulo. The experimental design was a completely randomized design with four replications, consisting of a 9 x 4 factorial, combined with three water management systems (-0.03, -0.07 and -1.5 MPa) and three herbicides (fluazifop-p-butyl, haloxyfop-methyl and sethoxydim + oil using four doses (100, 50, 25 and 0% of the recommended dose). Herbicide applications were conducted at two vegetative stages for all species: a 4-6 leaf stage and a 2-3 tiller stage. The physiological parameters evaluated were as follows: photosynthetic rate, stomatal conductance, transpiration, leaf temperature and plant dry matter. The visual assessments of phytotoxicity were performed 28 days after herbicide application. The control efficiency was lower in plants grown under soil water potential conditions of -1.5 MPa, regardless of the herbicide used during the two application stages; however, none reached 100% control. Fractionation of the recommended herbicide doses reduced effectiveness, with the exception of the 50%-dose application of sethoxydim and fluazifop-p-butyl herbicides, which were also effective in the 4-6 leaf plant control under normal water conditions.
author	Rocha-Pereira,Maria R Klar,Antônio E Martins,Dagoberto Ferreira de Souza,Guilherme S Villalba,Juana
author_facet	Rocha-Pereira,Maria R Klar,Antônio E Martins,Dagoberto Ferreira de Souza,Guilherme S Villalba,Juana
author_sort	Rocha-Pereira,Maria R
title	Effect of water stress on herbicide efficiency applied to Urochloa decumbens
title_short	Effect of water stress on herbicide efficiency applied to Urochloa decumbens
title_full	Effect of water stress on herbicide efficiency applied to Urochloa decumbens
title_fullStr	Effect of water stress on herbicide efficiency applied to Urochloa decumbens
title_full_unstemmed	Effect of water stress on herbicide efficiency applied to Urochloa decumbens
title_sort	effect of water stress on herbicide efficiency applied to urochloa decumbens
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100018
work_keys_str_mv	AT rochapereiramariar effectofwaterstressonherbicideefficiencyappliedtourochloadecumbens AT klarantonioe effectofwaterstressonherbicideefficiencyappliedtourochloadecumbens AT martinsdagoberto effectofwaterstressonherbicideefficiencyappliedtourochloadecumbens AT ferreiradesouzaguilhermes effectofwaterstressonherbicideefficiencyappliedtourochloadecumbens AT villalbajuana effectofwaterstressonherbicideefficiencyappliedtourochloadecumbens
_version_	1714202138579566592

Effect of water stress on herbicide efficiency applied to Urochloa decumbens

Ejemplares similares