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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
26/02/2021 |
Actualizado : |
10/08/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BAETHGEN, W.E.; PARTON, W.P-; RUBIO, V.; KELLY, R.H.; LUTZ, S. |
Afiliación : |
WALTER E. BAETHGEN, International Research Institute for Climate and Society, The Earth Institute, Columbia University, New York, USA.; WILLIAM J. PARTON, Natural Resource Ecology Lab, Colorado State University, Fort Collins, Colorado, USA.; VALENTINA RUBIO DELLEPIANE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROBIN H. KELLY, Natural Resource Ecology Lab, Colorado State University, Fort Collins, Colorado, USA.; SUSAN LUTZ, Natural Resource Ecology Lab, Colorado State University, Fort Collins, Colorado, USA. |
Título : |
Ecosystem dynamics of crop-pasture rotations in a fifty-year field experiment in Southern South America: Century model and field results. |
Fecha de publicación : |
2021 |
Fuente / Imprenta : |
Soil Science Society of America Journal, Volume 85, Issue 2, Pages 423-437, March/April 2021. DOI: https://doi.org/10.1002/saj2.20204 |
DOI : |
doi.org/10.1002/saj2.20204 |
Idioma : |
Inglés |
Notas : |
Article History: Accepted manuscript online: 26 November 2020; Manuscript accepted: 18 November 2020; Manuscript revised: 02 November 2020 ; Manuscript received: 12 February 2020; Published online: 24 March 2021. |
Contenido : |
Abstract:
The Century model was used to simulate soil carbon (C) and nitrogen (N) cycling, and crop production dynamics in an ongoing field experiment in Uruguay (started in 1963). The model was calibrated using observed data from three treatments (crop or crop?pasture rotations) and validated with a fourth treatment. The model correctly predicted the impact of different treatments on microbial biomass, N mineralization, soil respiration, and crop yields. The model and observed data show that soil respiration, N mineralization, soil C, and crop yields increase with increasing plant derived C inputs caused by increasing the frequency of pastures in the rotations. This is one of the first papers which show the strong positive correlation of observed soil C with plant C soil inputs to field?observed microbial biomass, soil respiration, and N mineralization. The results also showed that reducing tillage and transitioning to a no?till system increased soil C and reduced soil erosion. The main path of soil C losses was heterotrophic microbial respiration which accounted for 66% of the total C lost in a continuous crop rotation and no fertilizers, 71% in a continuous crop rotation with fertilizers, and 86% in a crop?pasture rotation with fertilizers. Model results from a degraded cropping system showed that adding grass/clover pastures greatly increased plant production and soil C, while reducing the frequency of grass/clover pastures in high?fertility cropping systems from 50% of the time to 25% reduces crop yields and soil C. Including cover crops substantially increases crop production and maintains soil C in high fertility and degraded cropping systems MenosAbstract:
The Century model was used to simulate soil carbon (C) and nitrogen (N) cycling, and crop production dynamics in an ongoing field experiment in Uruguay (started in 1963). The model was calibrated using observed data from three treatments (crop or crop?pasture rotations) and validated with a fourth treatment. The model correctly predicted the impact of different treatments on microbial biomass, N mineralization, soil respiration, and crop yields. The model and observed data show that soil respiration, N mineralization, soil C, and crop yields increase with increasing plant derived C inputs caused by increasing the frequency of pastures in the rotations. This is one of the first papers which show the strong positive correlation of observed soil C with plant C soil inputs to field?observed microbial biomass, soil respiration, and N mineralization. The results also showed that reducing tillage and transitioning to a no?till system increased soil C and reduced soil erosion. The main path of soil C losses was heterotrophic microbial respiration which accounted for 66% of the total C lost in a continuous crop rotation and no fertilizers, 71% in a continuous crop rotation with fertilizers, and 86% in a crop?pasture rotation with fertilizers. Model results from a degraded cropping system showed that adding grass/clover pastures greatly increased plant production and soil C, while reducing the frequency of grass/clover pastures in high?fertility cropping systems from 50% of ... Presentar Todo |
Palabras claves : |
CROP PASTURE ROTATION; CROPPING SYSTEMS; GRASS-CLOVER PASTURES; HIGH FERTILITY. |
Thesagro : |
CICLO DEL CARBONO; CICLO DEL NITROGENO; ECOSISTEMAS; SUELOS. |
Asunto categoría : |
-- |
Marc : |
LEADER 02844naa a2200289 a 4500 001 1061775 005 2021-08-10 008 2021 bl uuuu u00u1 u #d 024 7 $adoi.org/10.1002/saj2.20204$2DOI 100 1 $aBAETHGEN, W.E. 245 $aEcosystem dynamics of crop-pasture rotations in a fifty-year field experiment in Southern South America$bCentury model and field results.$h[electronic resource] 260 $c2021 500 $aArticle History: Accepted manuscript online: 26 November 2020; Manuscript accepted: 18 November 2020; Manuscript revised: 02 November 2020 ; Manuscript received: 12 February 2020; Published online: 24 March 2021. 520 $aAbstract: The Century model was used to simulate soil carbon (C) and nitrogen (N) cycling, and crop production dynamics in an ongoing field experiment in Uruguay (started in 1963). The model was calibrated using observed data from three treatments (crop or crop?pasture rotations) and validated with a fourth treatment. The model correctly predicted the impact of different treatments on microbial biomass, N mineralization, soil respiration, and crop yields. The model and observed data show that soil respiration, N mineralization, soil C, and crop yields increase with increasing plant derived C inputs caused by increasing the frequency of pastures in the rotations. This is one of the first papers which show the strong positive correlation of observed soil C with plant C soil inputs to field?observed microbial biomass, soil respiration, and N mineralization. The results also showed that reducing tillage and transitioning to a no?till system increased soil C and reduced soil erosion. The main path of soil C losses was heterotrophic microbial respiration which accounted for 66% of the total C lost in a continuous crop rotation and no fertilizers, 71% in a continuous crop rotation with fertilizers, and 86% in a crop?pasture rotation with fertilizers. Model results from a degraded cropping system showed that adding grass/clover pastures greatly increased plant production and soil C, while reducing the frequency of grass/clover pastures in high?fertility cropping systems from 50% of the time to 25% reduces crop yields and soil C. Including cover crops substantially increases crop production and maintains soil C in high fertility and degraded cropping systems 650 $aCICLO DEL CARBONO 650 $aCICLO DEL NITROGENO 650 $aECOSISTEMAS 650 $aSUELOS 653 $aCROP PASTURE ROTATION 653 $aCROPPING SYSTEMS 653 $aGRASS-CLOVER PASTURES 653 $aHIGH FERTILITY 700 1 $aPARTON, W.P- 700 1 $aRUBIO, V. 700 1 $aKELLY, R.H. 700 1 $aLUTZ, S. 773 $tSoil Science Society of America Journal, Volume 85, Issue 2, Pages 423-437, March/April 2021. DOI: https://doi.org/10.1002/saj2.20204
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
18/03/2020 |
Actualizado : |
18/03/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
PORTA, B; FERNANDEZ, P.; CONDON, F.; GALVÁN, G.A. |
Afiliación : |
BETTINA PORTA, Universidad de la República, Facultad de Agronomía, Departamento de Biología Vegetal, 12900, Montevideo, Uruguay.; PETER DENNIS FERNANDEZ GRAF, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FEDERICO CONDON PRIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUILLERMO A. GALVÁN, Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Centro Regional Sur, 90100, Canelones, Uruguay. |
Título : |
Gametes Simulator: a multilocus genotype simulator to analyze genetic structure in outbreeding diploid species. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Crop Breeding and Applied Biotechnology, v. 20, n.1 e26482019, 2020. http://dx.doi.org/10.1590/198470332020v20n1s9 |
DOI : |
10.1590/198470332020v20n1s9 |
Idioma : |
Inglés |
Notas : |
Article history: .Received: 11 March 2019//Accepted: 31 October 2019//Published: 13 February 2020. Corresponding author: E-mail: bporta@fagro.edu.uy. ORCID: 0000-0001-6835-679X. |
Contenido : |
Abstract: Bulk sampling and subsequent DNA fingerprinting are applied to obtain estimated allelic frequency data and unveil population structure for
outbreeding species. We developed Gametes Simulator, a routine to simulate gametes from allelic frequencies of unlinked loci, which enables the analysis of population structure through Bayesian analysis. Based on the allelic frequencies in the populations, the software simulates the alleles per population in the right proportions and assigns one allele per marker to each gamete following Mendel s laws that govern gametogenesis. |
Palabras claves : |
ALLELIC FREQUENCIES; BULK SAMPLING; UNLINKED LOCI. |
Thesagro : |
FITOMEJORAMIENTO. |
Asunto categoría : |
-- |
Marc : |
LEADER 01506naa a2200229 a 4500 001 1060930 005 2020-03-18 008 2020 bl uuuu u00u1 u #d 024 7 $a10.1590/198470332020v20n1s9$2DOI 100 1 $aPORTA, B 245 $aGametes Simulator$ba multilocus genotype simulator to analyze genetic structure in outbreeding diploid species.$h[electronic resource] 260 $c2020 500 $aArticle history: .Received: 11 March 2019//Accepted: 31 October 2019//Published: 13 February 2020. Corresponding author: E-mail: bporta@fagro.edu.uy. ORCID: 0000-0001-6835-679X. 520 $aAbstract: Bulk sampling and subsequent DNA fingerprinting are applied to obtain estimated allelic frequency data and unveil population structure for outbreeding species. We developed Gametes Simulator, a routine to simulate gametes from allelic frequencies of unlinked loci, which enables the analysis of population structure through Bayesian analysis. Based on the allelic frequencies in the populations, the software simulates the alleles per population in the right proportions and assigns one allele per marker to each gamete following Mendel s laws that govern gametogenesis. 650 $aFITOMEJORAMIENTO 653 $aALLELIC FREQUENCIES 653 $aBULK SAMPLING 653 $aUNLINKED LOCI 700 1 $aFERNANDEZ, P. 700 1 $aCONDON, F. 700 1 $aGALVÁN, G.A. 773 $tCrop Breeding and Applied Biotechnology$gv. 20, n.1 e26482019, 2020. http://dx.doi.org/10.1590/198470332020v20n1s9
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