Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice

ABSTRACT The repeated use of herbicides with the same mode of action maybe has led to buildup of resistant late watergrass (Echinochloa phyllopogon (Stapf) Stapf ex Kossenko) populations. Thus, pot experiment was conducted to evaluate the level of penoxsulam- and bispyribac-resistance in seven late...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Vasilakoglou,Ioannis, Dhima,Kico, Gitsopoulos,Thomas
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Herbicide efficacy imazamox profoxydim resistance management rice yield.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200276
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-58392018000200276
record_format	dspace
spelling	oai:scielo:S0718-583920180002002762018-08-16Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in riceVasilakoglou,IoannisDhima,KicoGitsopoulos,Thomas Herbicide efficacy imazamox profoxydim resistance management rice yield. ABSTRACT The repeated use of herbicides with the same mode of action maybe has led to buildup of resistant late watergrass (Echinochloa phyllopogon (Stapf) Stapf ex Kossenko) populations. Thus, pot experiment was conducted to evaluate the level of penoxsulam- and bispyribac-resistance in seven late watergrass biotypes collected from water-seeded rice fields in Greece. Their susceptibility to imazamox and profoxydim was also studied. Furthermore, the efficacy of various herbicide combinations against the resistant late watergrass biotypes, as well as on rice sedge (Cyperus difformis L.) were evaluated in four field experiments. In pot experiment, two biotypes were resistant to both herbicides, while three biotypes were moderately resistant to penoxsulam with one of these simultaneously resistant to bispyribac. Four biotypes were also cross-resistant to imazamox, while all biotypes were susceptible to profoxydim. In field experiments, the double applications of penoxsulam or bispyribac applied at 18 d after seeding (DAS) followed by profoxydim plus halosulfuron at 35 DAS constantly provided the greatest rice yield and satisfactory control of both weeds. Conclusively, late watergrass resistant to penoxsulam and bispyribac biotypes have been built. In particular, rates up to 8 times the recommended rate did not provide acceptable weed control. Effective control of these biotypes and high rice yield can be achieved by double applications of herbicides with different modes of action (penoxsulam or bispyribac until the third leaf of rice [18 DAS] followed by profoxydim at seven-to eight-leaves growth stage [35 DAS]). Simultaneous control of late emerged rice sedge can be achieved by the addition of halosulfuron in the tank-mix with profoxydim.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.2 20182018-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200276en10.4067/S0718-58392018000200276
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Herbicide efficacy imazamox profoxydim resistance management rice yield.
spellingShingle	Herbicide efficacy imazamox profoxydim resistance management rice yield. Vasilakoglou,Ioannis Dhima,Kico Gitsopoulos,Thomas Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
description	ABSTRACT The repeated use of herbicides with the same mode of action maybe has led to buildup of resistant late watergrass (Echinochloa phyllopogon (Stapf) Stapf ex Kossenko) populations. Thus, pot experiment was conducted to evaluate the level of penoxsulam- and bispyribac-resistance in seven late watergrass biotypes collected from water-seeded rice fields in Greece. Their susceptibility to imazamox and profoxydim was also studied. Furthermore, the efficacy of various herbicide combinations against the resistant late watergrass biotypes, as well as on rice sedge (Cyperus difformis L.) were evaluated in four field experiments. In pot experiment, two biotypes were resistant to both herbicides, while three biotypes were moderately resistant to penoxsulam with one of these simultaneously resistant to bispyribac. Four biotypes were also cross-resistant to imazamox, while all biotypes were susceptible to profoxydim. In field experiments, the double applications of penoxsulam or bispyribac applied at 18 d after seeding (DAS) followed by profoxydim plus halosulfuron at 35 DAS constantly provided the greatest rice yield and satisfactory control of both weeds. Conclusively, late watergrass resistant to penoxsulam and bispyribac biotypes have been built. In particular, rates up to 8 times the recommended rate did not provide acceptable weed control. Effective control of these biotypes and high rice yield can be achieved by double applications of herbicides with different modes of action (penoxsulam or bispyribac until the third leaf of rice [18 DAS] followed by profoxydim at seven-to eight-leaves growth stage [35 DAS]). Simultaneous control of late emerged rice sedge can be achieved by the addition of halosulfuron in the tank-mix with profoxydim.
author	Vasilakoglou,Ioannis Dhima,Kico Gitsopoulos,Thomas
author_facet	Vasilakoglou,Ioannis Dhima,Kico Gitsopoulos,Thomas
author_sort	Vasilakoglou,Ioannis
title	Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
title_short	Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
title_full	Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
title_fullStr	Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
title_full_unstemmed	Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice
title_sort	management of penoxsulam- and bispyribac-resistant late watergrass ( echinochloa phyllopogon ) biotypes and rice sedge ( cyperus difformis ) in rice
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200276
work_keys_str_mv	AT vasilakoglouioannis managementofpenoxsulamandbispyribacresistantlatewatergrassechinochloaphyllopogonbiotypesandricesedgecyperusdifformisinrice AT dhimakico managementofpenoxsulamandbispyribacresistantlatewatergrassechinochloaphyllopogonbiotypesandricesedgecyperusdifformisinrice AT gitsopoulosthomas managementofpenoxsulamandbispyribacresistantlatewatergrassechinochloaphyllopogonbiotypesandricesedgecyperusdifformisinrice
_version_	1714205378704572416

Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice

Ejemplares similares