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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
21/02/2014 |
Actualizado : |
19/04/2022 |
Autor : |
UNIVERSIDAD DE LA REPÚBLICA (UDELAR). FACULTAD DE AGRONOMÍA |
Título : |
[Trabajos presentados]. |
Complemento del título : |
CONGRESO NACIONAL DE INGENIERÍA AGRONÓMICA, 6., 1993, MONTEVIDEO, URUGUAY. |
Fecha de publicación : |
1993 |
Fuente / Imprenta : |
Montevideo (Uruguay): Asociación de Ingenieros Agrónomos del Uruguay, 1993. |
Páginas : |
paginación por capítulos |
Idioma : |
Español |
Thesagro : |
AGRICULTURA; BIOTECNOLOGIA; FORESTACION; PASTURAS; PRODUCCION ANIMAL; PROTECCION VEGETAL; URUGUAY. |
Asunto categoría : |
A50 Investigación agraria |
Marc : |
LEADER 00580nam a2200193 a 4500 001 1031802 005 2022-04-19 008 1993 bl uuuu u01u1 u #d 100 1 $aUNIVERSIDAD DE LA REPÚBLICA (UDELAR). FACULTAD DE AGRONOMÍA 245 $a[Trabajos presentados]. 260 $aMontevideo (Uruguay): Asociación de Ingenieros Agrónomos del Uruguay$c1993 300 $apaginación por capítulos 650 $aAGRICULTURA 650 $aBIOTECNOLOGIA 650 $aFORESTACION 650 $aPASTURAS 650 $aPRODUCCION ANIMAL 650 $aPROTECCION VEGETAL 650 $aURUGUAY
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INIA Treinta y Tres (TT) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
27/08/2020 |
Actualizado : |
27/08/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
GRASSO, R.; DE SOUZA, R.; PEÑA-FLEITAS, M.T.; GALLARDO, M.; THOMPSON, R.; PADILLA, F. |
Afiliación : |
RAFAEL GILLSON GRASSO RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROMINA DE SOUZA, Department of Agronomy, University of Almeria, Almería, Spain; M. TERESA PEÑA-FLEITAS, bDepartment of Agronomy, University of Almeria, Almería, Spain; MARISA GALLARDO, Department of Agronomy, University of Almeria, Almería, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Almería, Spain; RODNEY B. THOMPSON, Department of Agronomy, University of Almeria, Almería, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Almería, Spain; FRANCISCO M. PADILLA, Department of Agronomy, University of Almeria, Almería, Spain; CIAIMBITAL Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology, University of Almeria, Almería, Spain. |
Título : |
Root and crop responses of sweet pepper (Capsicum annuum) to increasing N fertilization . |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Scientia Horticulturae, 17 November 2020, Volume 273, Article number 109645. DOI: https://doi.org/10.1016/j.scienta.2020.109645 |
ISSN : |
0304-4238 |
DOI : |
10.1016/j.scienta.2020.109645 |
Idioma : |
Inglés |
Notas : |
Article history: Received 5 May 2020; Received in revised form 5 August 2020; Accepted 7 August 2020; Available online 18 August 2020.
This work was supported by the Spanish Ministry of Economy and Competitiveness through project AGL2015-67076-R and grant numbers BES-2016-076706 (Romina de Souza) and RYC-2014-15815 (Francisco M. Padilla). Rafael Grasso was supported by INIA, Uruguay .
Corresponding author: Rafael Grassio. E-mail address: rgrasso@inia.org.uy |
Contenido : |
ABSTRACT.
Rooting is the mechanism by which roots explore soil resources to nourish and anchor the plant to the ground. In vegetable crops, nitrogen (N) application exceeds crop demand due to over fertilization, thereby contributing to N losses through nitrate (NO3−) leaching. To improve N fertilization, knowledge of the response of rooting behaviour and root dynamics to N fertilization will be very useful. In this study, the effect of rates of N application on rooting were assessed in two sweet pepper (Capsicum annuum) crops grown in an artificially layered soil, with sand mulch, in Almería (south-eastern Spain). The treatments were very deficient, conventional, and very excessive in terms of N application. Yield, crop N absorption and dry matter of the shoot part were determined. Statistically significant differences were found in shoot dry matter between the very deficient N, compared to conventional and very excessive N. Root length density decreased with increasing application of N, with significantly higher density in the very deficient N application. In relation to depth, root length density in the very deficient N was nearly double (in the 2016 crop) and triple (in the 2017 crop) than in conventional N in the sand mulch layer (0?0.10 m depth). In contrast, root length density in the very deficient N treatment was in general lower than in conventional and very excessive N application in the 0.10?0.20 m layer. In the deeper layers, 0.20?0.30 and 0.30?0.40 m, no effects of N treatments on root length density were found. In relative terms, plants subjected to very deficient N treatment allocated relatively more roots in the sand mulch layer and less roots in the 0.10?0.20 m layer than when subjected to conventional and very excessive N. Root length density was negatively correlated with shoot dry matter, crop N absorption, yield and residual soil mineral N at the end of the crops. Overall, results of the present work suggest that conventional and very excessive N application maximized the development of the shoot part and crop yield and diminished root length density, particularly in the sand mulch layer (0?0.10 m depth). A higher root length density was not sufficient under very deficient N in terms of matching dry matter and yield of the conventional N treatment.
© 2020 Elsevier B.V. MenosABSTRACT.
Rooting is the mechanism by which roots explore soil resources to nourish and anchor the plant to the ground. In vegetable crops, nitrogen (N) application exceeds crop demand due to over fertilization, thereby contributing to N losses through nitrate (NO3−) leaching. To improve N fertilization, knowledge of the response of rooting behaviour and root dynamics to N fertilization will be very useful. In this study, the effect of rates of N application on rooting were assessed in two sweet pepper (Capsicum annuum) crops grown in an artificially layered soil, with sand mulch, in Almería (south-eastern Spain). The treatments were very deficient, conventional, and very excessive in terms of N application. Yield, crop N absorption and dry matter of the shoot part were determined. Statistically significant differences were found in shoot dry matter between the very deficient N, compared to conventional and very excessive N. Root length density decreased with increasing application of N, with significantly higher density in the very deficient N application. In relation to depth, root length density in the very deficient N was nearly double (in the 2016 crop) and triple (in the 2017 crop) than in conventional N in the sand mulch layer (0?0.10 m depth). In contrast, root length density in the very deficient N treatment was in general lower than in conventional and very excessive N application in the 0.10?0.20 m layer. In the deeper layers, 0.20?0.30 and 0.30?0.40 m, no e... Presentar Todo |
Palabras claves : |
Fertilization; Nitrogen management; Root density; Soil layer; Vegetable crops. |
Thesagro : |
CAPSICUM ANNUUM. |
Asunto categoría : |
F01 Cultivo |
Marc : |
LEADER 03692naa a2200289 a 4500 001 1061281 005 2020-08-27 008 2020 bl uuuu u00u1 u #d 022 $a0304-4238 024 7 $a10.1016/j.scienta.2020.109645$2DOI 100 1 $aGRASSO, R. 245 $aRoot and crop responses of sweet pepper (Capsicum annuum) to increasing N fertilization .$h[electronic resource] 260 $c2020 500 $aArticle history: Received 5 May 2020; Received in revised form 5 August 2020; Accepted 7 August 2020; Available online 18 August 2020. This work was supported by the Spanish Ministry of Economy and Competitiveness through project AGL2015-67076-R and grant numbers BES-2016-076706 (Romina de Souza) and RYC-2014-15815 (Francisco M. Padilla). Rafael Grasso was supported by INIA, Uruguay . Corresponding author: Rafael Grassio. E-mail address: rgrasso@inia.org.uy 520 $aABSTRACT. Rooting is the mechanism by which roots explore soil resources to nourish and anchor the plant to the ground. In vegetable crops, nitrogen (N) application exceeds crop demand due to over fertilization, thereby contributing to N losses through nitrate (NO3−) leaching. To improve N fertilization, knowledge of the response of rooting behaviour and root dynamics to N fertilization will be very useful. In this study, the effect of rates of N application on rooting were assessed in two sweet pepper (Capsicum annuum) crops grown in an artificially layered soil, with sand mulch, in Almería (south-eastern Spain). The treatments were very deficient, conventional, and very excessive in terms of N application. Yield, crop N absorption and dry matter of the shoot part were determined. Statistically significant differences were found in shoot dry matter between the very deficient N, compared to conventional and very excessive N. Root length density decreased with increasing application of N, with significantly higher density in the very deficient N application. In relation to depth, root length density in the very deficient N was nearly double (in the 2016 crop) and triple (in the 2017 crop) than in conventional N in the sand mulch layer (0?0.10 m depth). In contrast, root length density in the very deficient N treatment was in general lower than in conventional and very excessive N application in the 0.10?0.20 m layer. In the deeper layers, 0.20?0.30 and 0.30?0.40 m, no effects of N treatments on root length density were found. In relative terms, plants subjected to very deficient N treatment allocated relatively more roots in the sand mulch layer and less roots in the 0.10?0.20 m layer than when subjected to conventional and very excessive N. Root length density was negatively correlated with shoot dry matter, crop N absorption, yield and residual soil mineral N at the end of the crops. Overall, results of the present work suggest that conventional and very excessive N application maximized the development of the shoot part and crop yield and diminished root length density, particularly in the sand mulch layer (0?0.10 m depth). A higher root length density was not sufficient under very deficient N in terms of matching dry matter and yield of the conventional N treatment. © 2020 Elsevier B.V. 650 $aCAPSICUM ANNUUM 653 $aFertilization 653 $aNitrogen management 653 $aRoot density 653 $aSoil layer 653 $aVegetable crops 700 1 $aDE SOUZA, R. 700 1 $aPEÑA-FLEITAS, M.T. 700 1 $aGALLARDO, M. 700 1 $aTHOMPSON, R. 700 1 $aPADILLA, F. 773 $tScientia Horticulturae, 17 November 2020, Volume 273, Article number 109645. DOI: https://doi.org/10.1016/j.scienta.2020.109645
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