Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile

C. Quezada, S. Hernaíz, I. Vidal, R. Alvarado, R. Gallegos, and W. Yañez. 2013. Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile. 40(2): 375-385. Nitrogen agronomic efficiency (NAE) is a key factor that has not be...

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Autores principales:	Quezada,Celerino, Hernaíz,Santiago, Vidal,Iván, Alvarado,Roberto, Gallegos,Rubén, Yañez,Wilson
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2013
Materias:	Nitrogen agronomic efficiency nitrogen dose rice genotypes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200012
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spelling	oai:scielo:S0718-162020130002000122013-10-23Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern ChileQuezada,CelerinoHernaíz,SantiagoVidal,IvánAlvarado,RobertoGallegos,RubénYañez,Wilson Nitrogen agronomic efficiency nitrogen dose rice genotypes C. Quezada, S. Hernaíz, I. Vidal, R. Alvarado, R. Gallegos, and W. Yañez. 2013. Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile. 40(2): 375-385. Nitrogen agronomic efficiency (NAE) is a key factor that has not been considered in rice breeding programs. The objective of this study was to evaluate nitrogen agronomic efficiency in twenty rice genotypes in an Acuic Durixererts soil (Quella Series) located in Chile's south central zone (36°04'S, 72° 0'W) over the 2008-09 growing season. The field experiment was carried out in a complete randomized split-plot block design with five N treatments of 0, 50, 100, 150 and 200 kg ha-1 and twenty genotype sub-treatments. The following agronomic characteristics of the crops were measured: yield, grain fill percentage, and nitrogen agronomic efficiency. The N level had a significant effect on grain yield, NAE and the number of panicles per m². Highly significant differences in all parameters evaluated were observed between genotypes. The nitrogen x genotype interaction had significant effects on plant height, 1000-grain weight and the grain fill percentage. The best performing rice genotypes were as follows: Quila 233006, Quila 223202, CINIA 857, and RQuila 17 with a 50 kg N ha-1 dose and Ámbar, RQuila 17 and Quila 242105 with 100 kg N ha-1 dose. These genotypes had high NAE and yield components that may be of use when producing new cultivars. Our results demonstrate the importance of selecting rice genotypes with greater NAE and considering this parameter when making N fertilizer recommendations.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.40 n.2 20132013-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200012en10.4067/S0718-16202013000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nitrogen agronomic efficiency nitrogen dose rice genotypes
spellingShingle	Nitrogen agronomic efficiency nitrogen dose rice genotypes Quezada,Celerino Hernaíz,Santiago Vidal,Iván Alvarado,Roberto Gallegos,Rubén Yañez,Wilson Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
description	C. Quezada, S. Hernaíz, I. Vidal, R. Alvarado, R. Gallegos, and W. Yañez. 2013. Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile. 40(2): 375-385. Nitrogen agronomic efficiency (NAE) is a key factor that has not been considered in rice breeding programs. The objective of this study was to evaluate nitrogen agronomic efficiency in twenty rice genotypes in an Acuic Durixererts soil (Quella Series) located in Chile's south central zone (36°04'S, 72° 0'W) over the 2008-09 growing season. The field experiment was carried out in a complete randomized split-plot block design with five N treatments of 0, 50, 100, 150 and 200 kg ha-1 and twenty genotype sub-treatments. The following agronomic characteristics of the crops were measured: yield, grain fill percentage, and nitrogen agronomic efficiency. The N level had a significant effect on grain yield, NAE and the number of panicles per m². Highly significant differences in all parameters evaluated were observed between genotypes. The nitrogen x genotype interaction had significant effects on plant height, 1000-grain weight and the grain fill percentage. The best performing rice genotypes were as follows: Quila 233006, Quila 223202, CINIA 857, and RQuila 17 with a 50 kg N ha-1 dose and Ámbar, RQuila 17 and Quila 242105 with 100 kg N ha-1 dose. These genotypes had high NAE and yield components that may be of use when producing new cultivars. Our results demonstrate the importance of selecting rice genotypes with greater NAE and considering this parameter when making N fertilizer recommendations.
author	Quezada,Celerino Hernaíz,Santiago Vidal,Iván Alvarado,Roberto Gallegos,Rubén Yañez,Wilson
author_facet	Quezada,Celerino Hernaíz,Santiago Vidal,Iván Alvarado,Roberto Gallegos,Rubén Yañez,Wilson
author_sort	Quezada,Celerino
title	Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
title_short	Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
title_full	Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
title_fullStr	Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
title_full_unstemmed	Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile
title_sort	selection of rice genotypes (oryza sativa) with high nitrogen agronomic efficiency in an acuic durixererts soil, central-southern chile
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200012
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Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile

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