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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
03/09/2020 |
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Actualizado : |
03/09/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ERRECART, P,M.; MARINO, M.A.; AGNUSDEI, M.G.; LATTANZI, F.; DURAND, J-L |
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Afiliación : |
PEDRO MANUEL ERRECART, Unidad Integrada Balcarce (Instituto Nacional de Tecnología Agropecuaria EEA Balcarce-Facultad de Ciencias Agrarias Universidad Nacional de Mar del Plata), Ruta Nacional 226 km 73.5, Balcarce, Argentina.; MARÍA ALEJANDRA MARINO, Unidad Integrada Balcarce (Instituto Nacional de Tecnología Agropecuaria EEA Balcarce-Facultad de Ciencias Agrarias Universidad Nacional de Mar del Plata), Ruta Nacional 226 km 73.5, Balcarce, Argentina.; MÓNICA GRACIELA AGNUSDEI, Unidad Integrada Balcarce (Instituto Nacional de Tecnología Agropecuaria EEA Balcarce-Facultad de Ciencias Agrarias Universidad Nacional de Mar del Plata), Ruta Nacional 226 km 73.5, Balcarce, Argentina.; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JEAN-LOUIS DURAND, Unité de Recherche Pluridisciplinaire Prairies Plantes Fourragères (URP3F), INRA, Route de Saintes, Lusignan, France. |
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Título : |
The intensity of water stress dictates whether the N status of temperate-type perennial grass swards is affected by drought. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Field Crops Research, 15 October 2020, Volume 257, Article number 107928. Doi: https://doi.org/10.1016/j.fcr.2020.107928 |
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DOI : |
10.1016/j.fcr.2020.107928 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 28 February 2020/ Received in revised form 23 July 2020/ Accepted 27 July 2020. Corresponding author:
E-mail address: errecart.pedro@inta.gob.ar (P.M. Errecart). |
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Contenido : |
Abstract:Temperate-type, summer-active cool-season perennial grasses are frequently exposed to dry spells during the warm season due to the high atmospheric demand and fast soil desiccation. Since water availability is essential for sward nitrogen (N) uptake and most mineral N is located in the topsoil, water stress may hinder sward N nutrition if it reduces N supply. In hydro-halomorphic soils, imbalances between soil N supply and sward N demand during summer could be further aggravated by, first, the limited water holding capacity of the topsoil, and second, potential availability of water from deep, N-poor soil horizons that are kept moist by a shallow water table. The aim of this work was to quantify the effect of N and water availability on N status and productivity of temperate-type perennial swards growing in a hydro-halomorphic soil of the Flooding Pampa. During two consecutive years, shoot and root dynamics, as well as radiation capture, N nutrition index (NNI), soil water availability and leaf water potential were followed over six weeks long mid-summer regrowths of old stands (>9 years) of temperate-type tall fescue [Lolium arundinaceum (Schreb.) Darbysh.] sown on a typical Natraqualf soil in Balcarce, Argentina. Swards were either rainfed or irrigated and fertilized with either 40 or 200 kg de N ha?1. Root systems were large (5.8?9.3 Mg DM roots ha?1), but concentrated mostly in the 0.2 m topsoil (66%?75% of root biomass or length). Despite invariably high available water below 0.4 m throughout both experimental periods, rainfed swards faced transient episodes of water stress whenever the upper soil layer dried out. Tall fescue swards were strongly co-limited by water and N during summer, showing comparable, very high responses to both N addition and irrigation. Further, forage yield showed synergistic increases when swards received both supplemental water and N simultaneously. This was mainly due to consistent synergistic responses in radiation use efficiency and leaf lifespan. Sward NNI was depressed only by an historically severe drought but was not altered when water stress intensity was lower, close to average for the season in the area. Therefore, the major causes of typically low summer productivity of temperate-type tall fescue growing in hydro-halomorphic soils of the Flooding Pampa are the intrinsic effects of low N and low water availability, with only uncommonly extreme water stress episodes reducing yield indirectly through an aggravation of crop N status. MenosAbstract:Temperate-type, summer-active cool-season perennial grasses are frequently exposed to dry spells during the warm season due to the high atmospheric demand and fast soil desiccation. Since water availability is essential for sward nitrogen (N) uptake and most mineral N is located in the topsoil, water stress may hinder sward N nutrition if it reduces N supply. In hydro-halomorphic soils, imbalances between soil N supply and sward N demand during summer could be further aggravated by, first, the limited water holding capacity of the topsoil, and second, potential availability of water from deep, N-poor soil horizons that are kept moist by a shallow water table. The aim of this work was to quantify the effect of N and water availability on N status and productivity of temperate-type perennial swards growing in a hydro-halomorphic soil of the Flooding Pampa. During two consecutive years, shoot and root dynamics, as well as radiation capture, N nutrition index (NNI), soil water availability and leaf water potential were followed over six weeks long mid-summer regrowths of old stands (>9 years) of temperate-type tall fescue [Lolium arundinaceum (Schreb.) Darbysh.] sown on a typical Natraqualf soil in Balcarce, Argentina. Swards were either rainfed or irrigated and fertilized with either 40 or 200 kg de N ha?1. Root systems were large (5.8?9.3 Mg DM roots ha?1), but concentrated mostly in the 0.2 m topsoil (66%?75% of root biomass or length). Despite invariably high availa... Presentar Todo |
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Thesagro : |
ESTRES HIDRICO; NITROGEN. |
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NAL Tesauro : |
FORAGE YIELD; NITROGEN NUTRITION INDEX; RESOURCE CO-LIMITATION; ROOTS; WATER-NITROGEN INTERACTION. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03615naa a2200277 a 4500
001 1061293
005 2020-09-03
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1016/j.fcr.2020.107928$2DOI
100 1 $aERRECART, P,M.
245 $aThe intensity of water stress dictates whether the N status of temperate-type perennial grass swards is affected by drought.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 28 February 2020/ Received in revised form 23 July 2020/ Accepted 27 July 2020. Corresponding author: E-mail address: errecart.pedro@inta.gob.ar (P.M. Errecart).
520 $aAbstract:Temperate-type, summer-active cool-season perennial grasses are frequently exposed to dry spells during the warm season due to the high atmospheric demand and fast soil desiccation. Since water availability is essential for sward nitrogen (N) uptake and most mineral N is located in the topsoil, water stress may hinder sward N nutrition if it reduces N supply. In hydro-halomorphic soils, imbalances between soil N supply and sward N demand during summer could be further aggravated by, first, the limited water holding capacity of the topsoil, and second, potential availability of water from deep, N-poor soil horizons that are kept moist by a shallow water table. The aim of this work was to quantify the effect of N and water availability on N status and productivity of temperate-type perennial swards growing in a hydro-halomorphic soil of the Flooding Pampa. During two consecutive years, shoot and root dynamics, as well as radiation capture, N nutrition index (NNI), soil water availability and leaf water potential were followed over six weeks long mid-summer regrowths of old stands (>9 years) of temperate-type tall fescue [Lolium arundinaceum (Schreb.) Darbysh.] sown on a typical Natraqualf soil in Balcarce, Argentina. Swards were either rainfed or irrigated and fertilized with either 40 or 200 kg de N ha?1. Root systems were large (5.8?9.3 Mg DM roots ha?1), but concentrated mostly in the 0.2 m topsoil (66%?75% of root biomass or length). Despite invariably high available water below 0.4 m throughout both experimental periods, rainfed swards faced transient episodes of water stress whenever the upper soil layer dried out. Tall fescue swards were strongly co-limited by water and N during summer, showing comparable, very high responses to both N addition and irrigation. Further, forage yield showed synergistic increases when swards received both supplemental water and N simultaneously. This was mainly due to consistent synergistic responses in radiation use efficiency and leaf lifespan. Sward NNI was depressed only by an historically severe drought but was not altered when water stress intensity was lower, close to average for the season in the area. Therefore, the major causes of typically low summer productivity of temperate-type tall fescue growing in hydro-halomorphic soils of the Flooding Pampa are the intrinsic effects of low N and low water availability, with only uncommonly extreme water stress episodes reducing yield indirectly through an aggravation of crop N status.
650 $aFORAGE YIELD
650 $aNITROGEN NUTRITION INDEX
650 $aRESOURCE CO-LIMITATION
650 $aROOTS
650 $aWATER-NITROGEN INTERACTION
650 $aESTRES HIDRICO
650 $aNITROGEN
700 1 $aMARINO, M.A.
700 1 $aAGNUSDEI, M.G.
700 1 $aLATTANZI, F.
700 1 $aDURAND, J-L
773 $tField Crops Research, 15 October 2020, Volume 257, Article number 107928. Doi: https://doi.org/10.1016/j.fcr.2020.107928
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Registro original : |
INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
18/04/2017 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
HERNÁNDEZ-RODRÍGUEZ, L.; BERTALMIO, A.; ARRUABARRENA, A.; RUBIO, L.; RIVAS, F.; BENÍTEZ-GALEANO, M.J.; COLINA, R.; MAESO, D. |
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Afiliación : |
L. HERNÁNDEZ-RODRÍGUEZ, Instituto de Investigaciones en Fruticultura Tropical, Playa, Havana City, Cuba; ANA MARIA BERTALMIO CASARIEGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA ARRUABARRENA PASCOVICH, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LETICIA PAOLA RUBIO CATTANI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; M.J. BENÍTEZ-GALEANO, Laboratorio de Virología Molecular / Universidad de la República (Salto, Uruguay); R. COLINA, Laboratorio de Virología Molecular, Universidad de la República (Salto, Uruguay); DIEGO CESAR MAESO TOZZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
First Report of the Citrus tristeza virus Trifoliate Resistance-Breaking (RB) Genotype in "Newhall" Sweet Orange in South America |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Plant Disease, 2017, v.101 (6), p.1063. (Abstract) |
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ISSN : |
0191-2917 |
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DOI : |
10.1094/PDIS-04-16-0430-PDN |
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Idioma : |
Inglés |
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Notas : |
DISEASE NOTES: Posted online on 30 Mar 2017. |
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Palabras claves : |
CITRUS TRISTEZA VIRUS (CTV). |
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Thesagro : |
CITRUS; VARIEDADES. |
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Asunto categoría : |
-- |
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URL : |
http://apsjournals.apsnet.org/doi/full/10.1094/PDIS-04-16-0430-PDN
http://apsjournals.apsnet.org/doi/suppl/10.1094/PDIS-04-16-0430-PDN
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Marc : |
LEADER 00858naa a2200265 a 4500
001 1057091
005 2019-10-15
008 2017 bl uuuu u00u1 u #d
022 $a0191-2917
024 7 $a10.1094/PDIS-04-16-0430-PDN$2DOI
100 1 $aHERNÁNDEZ-RODRÍGUEZ, L.
245 $aFirst Report of the Citrus tristeza virus Trifoliate Resistance-Breaking (RB) Genotype in "Newhall" Sweet Orange in South America$h[electronic resource]
260 $c2017
500 $aDISEASE NOTES: Posted online on 30 Mar 2017.
650 $aCITRUS
650 $aVARIEDADES
653 $aCITRUS TRISTEZA VIRUS (CTV)
700 1 $aBERTALMIO, A.
700 1 $aARRUABARRENA, A.
700 1 $aRUBIO, L.
700 1 $aRIVAS, F.
700 1 $aBENÍTEZ-GALEANO, M.J.
700 1 $aCOLINA, R.
700 1 $aMAESO, D.
773 $tPlant Disease, 2017$gv.101 (6), p.1063. (Abstract)
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