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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
17/03/2022 |
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Actualizado : |
01/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
FERNÁNDEZ SCAVINO, A.; OREGGIONI, D.; MARTÍNEZ PEREYRA, A.; TARLERA, S.; TERRA, J.A.; IRISARRI, P. |
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Afiliación : |
ANA FERNÁNDEZ SCAVINO, Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.; DANIELA OREGGIONI, Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.; ANDREA MARTÍNEZ PEREYRA, Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.; SILVANA TARLERA, Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PILAR IRISARRI, Laboratorio de Microbiología, Departmento de Biología Vegetal, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay. |
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Título : |
Season and no-till Rice crop intensification affect soil microbial populations involved in CH4 and N2O emissions. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Frontiers in Soil Science, 17 March 2022, Volume 2, Article number 832600. OPEN ACCESS. Doi: https://doi.org/10.3389/fsoil.2022.832600 |
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DOI : |
10.3389/fsoil.2022.832600 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 10 December 2021; Accepted: 01 February 2022; Published: 17 March 2022.
This article is part of the research topic ?Management of agroecosystems for enhancement of soil microbial communities and soil natural fertility? https://www.frontiersin.org/research-topics/19551/management-of-agroecosystems-for-enhancement-of-soil-microbial-communities-and-soil-natural-fertilit#articles |
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Contenido : |
Abstract: Rice is an important source of methane (CH4) and other crops may be sources of nitrous oxide (N2O), both of which are powerful greenhouse gases. In Uruguay, irrigated rice rotates with perennial pastures and allows high productivity and low environmental impact. A long-term experiment with contrasting rice rotation intensification alternatives, including rice?soybean and continuous rice, was recently carried out in an Argialboll located in a temperate region of South America. To know if rotation systems influence soil microbial activity involved in CH4 and N2O emissions, the abundance and potential rate for gas production or consumption of microbial populations were measured during the rice crop season. CH4 was only emitted when rice was flooded and N2O emission was not detected. All rotational soils showed the highest rate for methanogenesis at tillering (30 days after rice emergence), while for methanotrophy, the maximum rate was reached at flowering. The abundance of related genes also followed a seasonal pattern with highest densities of mcrA genes being observed at rice flowering whereas pmoA genes were more abundant in dry soils after rice harvest, regardless of the rotation system. Differences were found mainly at tillering when soils with two consecutive summers under rice showed higher amounts of mcrA and pmoA gene copies. The potential denitrification rate was highest at the tillering stage, but the abundance of nirK and nirS genes was highest in winter. Regarding ammonium oxidation, bacterial amoA abundance was higher in winter while the archaeal amoA gene was similar throughout the year. A strong influence of the rice growth stage was registered for most of the parameters measured in rice paddy soils in this no-till rice intensification experiment. However, differences among rotations begin to be observed mainly at tillering when the abundance of populations of the methane and nitrous oxide cycles seemed to respond to the rice intensification. MenosAbstract: Rice is an important source of methane (CH4) and other crops may be sources of nitrous oxide (N2O), both of which are powerful greenhouse gases. In Uruguay, irrigated rice rotates with perennial pastures and allows high productivity and low environmental impact. A long-term experiment with contrasting rice rotation intensification alternatives, including rice?soybean and continuous rice, was recently carried out in an Argialboll located in a temperate region of South America. To know if rotation systems influence soil microbial activity involved in CH4 and N2O emissions, the abundance and potential rate for gas production or consumption of microbial populations were measured during the rice crop season. CH4 was only emitted when rice was flooded and N2O emission was not detected. All rotational soils showed the highest rate for methanogenesis at tillering (30 days after rice emergence), while for methanotrophy, the maximum rate was reached at flowering. The abundance of related genes also followed a seasonal pattern with highest densities of mcrA genes being observed at rice flowering whereas pmoA genes were more abundant in dry soils after rice harvest, regardless of the rotation system. Differences were found mainly at tillering when soils with two consecutive summers under rice showed higher amounts of mcrA and pmoA gene copies. The potential denitrification rate was highest at the tillering stage, but the abundance of nirK and nirS genes was highest in winter. ... Presentar Todo |
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Palabras claves : |
INTENSIFICATION; METHANE; MICROBIAL ABUNDANCE; NITROUS OXIDE (N20); RICE ROTATIONS SYSTEMS. |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16651/1/Frontier-Soil-Science-2002-Fernandez-Scavino.pdf
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Marc : |
LEADER 03291naa a2200265 a 4500
001 1062851
005 2022-09-01
008 2022 bl uuuu u00u1 u #d
024 7 $a10.3389/fsoil.2022.832600$2DOI
100 1 $aFERNÁNDEZ SCAVINO, A.
245 $aSeason and no-till Rice crop intensification affect soil microbial populations involved in CH4 and N2O emissions.$h[electronic resource]
260 $c2022
500 $aArticle history: Received: 10 December 2021; Accepted: 01 February 2022; Published: 17 March 2022. This article is part of the research topic ?Management of agroecosystems for enhancement of soil microbial communities and soil natural fertility? https://www.frontiersin.org/research-topics/19551/management-of-agroecosystems-for-enhancement-of-soil-microbial-communities-and-soil-natural-fertilit#articles
520 $aAbstract: Rice is an important source of methane (CH4) and other crops may be sources of nitrous oxide (N2O), both of which are powerful greenhouse gases. In Uruguay, irrigated rice rotates with perennial pastures and allows high productivity and low environmental impact. A long-term experiment with contrasting rice rotation intensification alternatives, including rice?soybean and continuous rice, was recently carried out in an Argialboll located in a temperate region of South America. To know if rotation systems influence soil microbial activity involved in CH4 and N2O emissions, the abundance and potential rate for gas production or consumption of microbial populations were measured during the rice crop season. CH4 was only emitted when rice was flooded and N2O emission was not detected. All rotational soils showed the highest rate for methanogenesis at tillering (30 days after rice emergence), while for methanotrophy, the maximum rate was reached at flowering. The abundance of related genes also followed a seasonal pattern with highest densities of mcrA genes being observed at rice flowering whereas pmoA genes were more abundant in dry soils after rice harvest, regardless of the rotation system. Differences were found mainly at tillering when soils with two consecutive summers under rice showed higher amounts of mcrA and pmoA gene copies. The potential denitrification rate was highest at the tillering stage, but the abundance of nirK and nirS genes was highest in winter. Regarding ammonium oxidation, bacterial amoA abundance was higher in winter while the archaeal amoA gene was similar throughout the year. A strong influence of the rice growth stage was registered for most of the parameters measured in rice paddy soils in this no-till rice intensification experiment. However, differences among rotations begin to be observed mainly at tillering when the abundance of populations of the methane and nitrous oxide cycles seemed to respond to the rice intensification.
653 $aINTENSIFICATION
653 $aMETHANE
653 $aMICROBIAL ABUNDANCE
653 $aNITROUS OXIDE (N20)
653 $aRICE ROTATIONS SYSTEMS
700 1 $aOREGGIONI, D.
700 1 $aMARTÍNEZ PEREYRA, A.
700 1 $aTARLERA, S.
700 1 $aTERRA, J.A.
700 1 $aIRISARRI, P.
773 $tFrontiers in Soil Science, 17 March 2022, Volume 2, Article number 832600. OPEN ACCESS. Doi: https://doi.org/10.3389/fsoil.2022.832600
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
25/06/2021 |
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Actualizado : |
06/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
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Circulación / Nivel : |
Nacional - -- |
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Autor : |
BASILE, P.; FORMOSO, D.; BLUMETTO, O. |
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Afiliación : |
PATRICIA CECILIA BASILE LORENZO, Universidad de la República, CENUR Noreste, Sede Tacuarembó, Tacuarembó, Uruguay.; DANIEL FORMOSO CUNHA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OSCAR RICARDO BLUMETTO VELAZCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Floristic composition and above-ground net primary production innatural grasslands on basaltic deep soils. [Composición florística y productividad primaria neta aérea de campos naturales sobre suelos profundos de basalto.]. [Composição florística e produtividade primária aérea liquida de campos naturais sobre solos de Basalto profundo.] |
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Complemento del título : |
Sectiion: Animal production and pastures. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Agrociencia Uruguay, 2021, vol. 25, n.2, article e417. Doi: https://doi.org/10.31285/AGRO.25.417 |
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ISSN : |
e-ISSN: 2730-5066 |
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DOI : |
10.31285/AGRO.25.417 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 29 Sep 2020; Accepted 22 Feb 2021; Published 17May 2021.
Editor: Pablo Boggiano, Universidad de la República, Paysandú, Uruguay.
Correspondence: Patricia Basile, mail: patricia.basile@cut.edu.uy |
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Contenido : |
ABSTRACT - In natural grasslands of the basaltic region, livestock management is applied traditionally associated with con-tinuous high stocking density resulting in the degradation of natural grasslands. Traditionally, aboveground net primary production (ANPP) was estimated from biomass cuts made in the fields. Today, it is possible to estimate ANPP using remote sensing techniques by synthetic images of enhanced vegetation index (EVI). Considering these, we aimed this study to: a) determine the effect of contrasting grazing managements on floristic composi-tion, b) estimate the radiation use efficiency coefficient (RUE) and its seasonal variation, and c) determine the ANPP for two contrasting grazing methods. The experiment was carried out in five farms in the basaltic region of Uruguay with mixed grazing under natural grasslands from spring 2013 to summer 2015. Paddocks with contrasting livestock management were chosen in each site. Vegetation growth was measured using the re-growth technique with three exclusion cages. Floristic composition was estimated using the Braun Blanquet scale. RUE coefficient was estimated following the equation: ANPP = APAR×RUE, where APAR is the absorbed photosynthetically active radiation. Changes in the floristic composition, ANPP, and RUE coefficient were rec-orded throughout the study in the two treatments. The RUE data obtained will be used to estimate ANPP in natural grasslands more accurately.
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RESUMEN - En la actualidad, los campos naturales de la región basáltica de Uruguay se encuentran deteriorados dado que históricamente se ha utilizado un manejo de carga continua sin ajuste a la productividad primaria neta aérea (PPNA) de la comunidad vegetal. Actualmente es posible estimar la PPNA mediante sensores remotos utili-zando imágenes sintéticas del índice de vegetación mejorado (EVI). Los objetivos del trabajo fueron determinar el efecto de la disminución de la intensidad de pastoreo en la composición florística, la PPNA y el coeficiente de eficiencia de uso de la radiación (EUR) de la comunidad vegetal de suelos profundos de basalto y determinar la variabilidad estacional del EUR. El trabajo se realizó entre la primavera de 2013 y el verano de 2015 en cinco establecimientos ganaderos de la región basáltica de Uruguay, en los cuales se eligieron dos potreros con manejo ganadero contrastante. Se midió el crecimiento de la vegetación mediante la técnica del rebrote utili-zando jaulas de exclusión. La composición florística se estimó mediante la escala Braun-Blanquet. El EUR se estimó a partir de la radiación absoluta absorbida por la planta (RFAA) y la PPNA siguiendo la ecuación: EUR=PPNA/ (RFAA×10). Se registraron cambios en la composición florística, la PPNA y el EUR a lo largo del estudio en los dos tratamientos. Los datos de EUR obtenidos servirán para poder estimar con mayor precisión la PPNA en campos naturales.
.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
RESUMO - Os campos naturais da região de basalto do Uruguai estão atualmente deteriorados, uma vez que o gerencia-mento de carga historicamente contínuo tem sido usado sem ajuste à Produtividade Primária Líquida (PPNA) da comunidade de plantas. Atualmente, é possível estimar o PPNA por sensoriamento remoto utilizando ima-gens sintéticas do índice de vegetação aprimorado (EVI). Os objetivos do trabalho foram determinar o efeito da diminuição da intensidade de pastejo sobre a composição florística, o PPNA e o coeficiente de eficiência no uso de radiação (EUR) da comunidade vegetal presente em solos basálticos profundos e determinar a variabi-lidade sazonal do EUR. O trabalho foi realizado entre a primavera de 2013 e o verão de 2015 em cinco fazendas de gado na região basáltica do Uruguai, nas quais foram escolhidas duas áreas de pastagem com manejo pecuário contrastante. O crescimento da vegetação foi medido pela técnica de rebrota em gaiolas de exclusão. A composição florística foi estimada pela escala de Braun-Blanquet. EUR foi estimado a partir da radiação fotossinteticamente ativa absorvida pela planta (PGRFA) e o (PPNA) seguindo a equação: EUR = PPNA / (PGRFA x 10). Mudanças na composição florística, PPNA e EUR foram registradas ao longo do estudo em ambos tratamentos. Os dados EUR obtidos poderiam ser utilizados para estimar com uma maior precisão o PPNA em campos naturais. MenosABSTRACT - In natural grasslands of the basaltic region, livestock management is applied traditionally associated with con-tinuous high stocking density resulting in the degradation of natural grasslands. Traditionally, aboveground net primary production (ANPP) was estimated from biomass cuts made in the fields. Today, it is possible to estimate ANPP using remote sensing techniques by synthetic images of enhanced vegetation index (EVI). Considering these, we aimed this study to: a) determine the effect of contrasting grazing managements on floristic composi-tion, b) estimate the radiation use efficiency coefficient (RUE) and its seasonal variation, and c) determine the ANPP for two contrasting grazing methods. The experiment was carried out in five farms in the basaltic region of Uruguay with mixed grazing under natural grasslands from spring 2013 to summer 2015. Paddocks with contrasting livestock management were chosen in each site. Vegetation growth was measured using the re-growth technique with three exclusion cages. Floristic composition was estimated using the Braun Blanquet scale. RUE coefficient was estimated following the equation: ANPP = APAR×RUE, where APAR is the absorbed photosynthetically active radiation. Changes in the floristic composition, ANPP, and RUE coefficient were rec-orded throughout the study in the two treatments. The RUE data obtained will be used to estimate ANPP in natural grassland... Presentar Todo |
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Palabras claves : |
Degradação; Degradación; Degradation; EUR; Gestão pecuária; Grazing management; Manejo ganadero; RUE. |
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Thesagro : |
CAMPO NATURAL. |
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Asunto categoría : |
L02 Alimentación animal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16734/1/Agrociencia-UY-2021-25-N2-417.pdf
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Marc : |
LEADER 05920naa a2200289 a 4500
001 1062161
005 2022-09-06
008 2021 bl uuuu u00u1 u #d
022 $ae-ISSN: 2730-5066
024 7 $a10.31285/AGRO.25.417$2DOI
100 1 $aBASILE, P.
245 $aFloristic composition and above-ground net primary production innatural grasslands on basaltic deep soils. [Composición florística y productividad primaria neta aérea de campos naturales sobre suelos profundos de basalto.]. [Composição florística e produtividade primária aérea liquida de campos naturais sobre solos de Basalto profundo.]$h[electronic resource]
260 $c2021
500 $aArticle history: Received 29 Sep 2020; Accepted 22 Feb 2021; Published 17May 2021. Editor: Pablo Boggiano, Universidad de la República, Paysandú, Uruguay. Correspondence: Patricia Basile, mail: patricia.basile@cut.edu.uy
520 $aABSTRACT - In natural grasslands of the basaltic region, livestock management is applied traditionally associated with con-tinuous high stocking density resulting in the degradation of natural grasslands. Traditionally, aboveground net primary production (ANPP) was estimated from biomass cuts made in the fields. Today, it is possible to estimate ANPP using remote sensing techniques by synthetic images of enhanced vegetation index (EVI). Considering these, we aimed this study to: a) determine the effect of contrasting grazing managements on floristic composi-tion, b) estimate the radiation use efficiency coefficient (RUE) and its seasonal variation, and c) determine the ANPP for two contrasting grazing methods. The experiment was carried out in five farms in the basaltic region of Uruguay with mixed grazing under natural grasslands from spring 2013 to summer 2015. Paddocks with contrasting livestock management were chosen in each site. Vegetation growth was measured using the re-growth technique with three exclusion cages. Floristic composition was estimated using the Braun Blanquet scale. RUE coefficient was estimated following the equation: ANPP = APAR×RUE, where APAR is the absorbed photosynthetically active radiation. Changes in the floristic composition, ANPP, and RUE coefficient were rec-orded throughout the study in the two treatments. The RUE data obtained will be used to estimate ANPP in natural grasslands more accurately. .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. RESUMEN - En la actualidad, los campos naturales de la región basáltica de Uruguay se encuentran deteriorados dado que históricamente se ha utilizado un manejo de carga continua sin ajuste a la productividad primaria neta aérea (PPNA) de la comunidad vegetal. Actualmente es posible estimar la PPNA mediante sensores remotos utili-zando imágenes sintéticas del índice de vegetación mejorado (EVI). Los objetivos del trabajo fueron determinar el efecto de la disminución de la intensidad de pastoreo en la composición florística, la PPNA y el coeficiente de eficiencia de uso de la radiación (EUR) de la comunidad vegetal de suelos profundos de basalto y determinar la variabilidad estacional del EUR. El trabajo se realizó entre la primavera de 2013 y el verano de 2015 en cinco establecimientos ganaderos de la región basáltica de Uruguay, en los cuales se eligieron dos potreros con manejo ganadero contrastante. Se midió el crecimiento de la vegetación mediante la técnica del rebrote utili-zando jaulas de exclusión. La composición florística se estimó mediante la escala Braun-Blanquet. El EUR se estimó a partir de la radiación absoluta absorbida por la planta (RFAA) y la PPNA siguiendo la ecuación: EUR=PPNA/ (RFAA×10). Se registraron cambios en la composición florística, la PPNA y el EUR a lo largo del estudio en los dos tratamientos. Los datos de EUR obtenidos servirán para poder estimar con mayor precisión la PPNA en campos naturales. .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. RESUMO - Os campos naturais da região de basalto do Uruguai estão atualmente deteriorados, uma vez que o gerencia-mento de carga historicamente contínuo tem sido usado sem ajuste à Produtividade Primária Líquida (PPNA) da comunidade de plantas. Atualmente, é possível estimar o PPNA por sensoriamento remoto utilizando ima-gens sintéticas do índice de vegetação aprimorado (EVI). Os objetivos do trabalho foram determinar o efeito da diminuição da intensidade de pastejo sobre a composição florística, o PPNA e o coeficiente de eficiência no uso de radiação (EUR) da comunidade vegetal presente em solos basálticos profundos e determinar a variabi-lidade sazonal do EUR. O trabalho foi realizado entre a primavera de 2013 e o verão de 2015 em cinco fazendas de gado na região basáltica do Uruguai, nas quais foram escolhidas duas áreas de pastagem com manejo pecuário contrastante. O crescimento da vegetação foi medido pela técnica de rebrota em gaiolas de exclusão. A composição florística foi estimada pela escala de Braun-Blanquet. EUR foi estimado a partir da radiação fotossinteticamente ativa absorvida pela planta (PGRFA) e o (PPNA) seguindo a equação: EUR = PPNA / (PGRFA x 10). Mudanças na composição florística, PPNA e EUR foram registradas ao longo do estudo em ambos tratamentos. Os dados EUR obtidos poderiam ser utilizados para estimar com uma maior precisão o PPNA em campos naturais.
650 $aCAMPO NATURAL
653 $aDegradação
653 $aDegradación
653 $aDegradation
653 $aEUR
653 $aGestão pecuária
653 $aGrazing management
653 $aManejo ganadero
653 $aRUE
700 1 $aFORMOSO, D.
700 1 $aBLUMETTO, O.
773 $tAgrociencia Uruguay, 2021, vol. 25$gn.2, article e417. Doi: https://doi.org/10.31285/AGRO.25.417
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