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Mostrando ítems 1-20 de 31

    • Absence of the nitrous oxide reductase gene cluster in commercial alfalfa inoculants is probably due to the extensive loss of genes during rhizobial domestication 

      Brambilla, Silvina Maricel; Frare, Romina Alejandra; Soto, Gabriela Cinthia; Jozefkowicz, Cintia; Ayub, Nicolás Daniel (Springer, 2018-08)
      As other legume crops, alfalfa cultivation increases the emission of the greenhouse gas nitrous oxide (N2O). Since legumesymbiotic nitrogen-fixing bacteria play a crucial role in this emission, it is important to understand ...

    • Adequate vegetative cover decreases nitrous oxide emissions from cattle urine deposited in grazed pastures under rainy season conditions 

      Chirinda, Ngonidzashe; Loaiza, Sandra; Arenas, Laura; Ruiz, Veronica; Faverin, Claudia; Alvarez, Carolina; Savian, Jean Víctor; Belfon, Renaldo; Zuniga, Karen; Morales-Rincon, Luis Alberto; Trujillo, Catalina; Arango, Miguel; Rao, Idupulapati; Arango, Jacobo; Peters, Michael; Barahona, Rolando; Costa, Ciniro; Rosenstock, Todd; Richards, Meryl; Martinez Baron, Deissy; Cardenas, Laura (Nature Publishing, 2019-01-29)
      A decline in pasture productivity is often associated with a reduction in vegetative cover. We hypothesize that nitrogen (N) in urine deposited by grazing cattle on degraded pastures, with low vegetative cover, is highly ...

    • Aporte de la fijación biológica de nitrógeno a la emisión de N2O desde el suelo con cultivo de soja = Contribution of biological nitrogen fixation to N2O emission from soil under soybean 

      Cosentino, Vanina Rosa Noemi; Brutti, Lucrecia Noemi; Civeira, Gabriela; Taboada, Miguel Angel (Asociación Argentina de la Ciencia del Suelo, 2015)
      El óxido nitroso (N2O) es el principal gas de efecto invernadero emitido desde el sector agrícola y su producción biológica en los suelos se genera por dos vías, la nitrificación y la desnitrificación. Recientemente el ...

    • CO2 and N2O flux balance on soybean fields during growth and fallow periods in the Argentine Pampas—A study case 

      Lewczuk, Nuria Andrea; Posse Beaulieu, Gabriela; Richter, Klaus; Achkar, Antonio (Elsevier, 2017-06)
      The estimation of the GHG balance of agroecosystems is essential to evaluate the impact of agriculture on the composition of the atmosphere. Cultivated soils may act as a sink or a source of CO2 and usually emit N2O. The ...

    • Comparison of field measurement methods of nitrous oxide soil emissions: from the chamber to the vial 

      Cosentino, Vanina Rosa Noemi; Romaniuk, Romina Ingrid; Lupi, Ana Maria; Gomez, Federico M.; Rimski Korsakov, Helena; Alvarez, Carina R.; Ciarlo, Esteban Ariel (Sociedade Brasileira de Ciencia do Solo, 2020-07-16)
      Nitrous oxide (N2O) is a greenhouse gas that contributes substantially to global climate change. The N2O soil emissions have a large uncertainty because of its low atmospheric concentration levels and enormous spatial and ...

    • Cover crop species affect N2O emissions at hotspot moments of summer crops 

      Vangeli, Sebastián; Restovich, Silvina Beatriz; Posse Beaulieu, Gabriela (Frontiers Media, 2022-06-01)
      The use of cover crops, combined with low N fertilization and no-tillage, reduces theenvironmental impacts of agriculture. Legume cover crops provide N to the agroecosystem and allow N fertilization to be reduced without ...

    • Crop intensification with sustainable practices did not increase N2O emissions 

      Casanave Ponti, Sheila Mailén; Videla, Cecilia; Monterubbianesi, María Gloria; Andrade, Fernando Hector; Rizzalli, Roberto Héctor (Elsevier, 2020-04-15)
      Nitrous oxide (N2O) is the most important greenhouse gas produced by agricultural soils and is a byproduct of microbial nitrification and denitrification processes. The N2O emission rates depend on soil, climatic ...

    • Dinámica de las emisiones de N2O, CH4 y CO2 en mallines de Patagonia Norte 

      Enriquez, Andrea Soledad; Vangeli, Sebastián; Posse Beaulieu, Gabriela (Asociación Argentina de la Ciencia del Suelo, 2020-10-13)
      Actualmente crece el interés por conocer la contribución que los ecosistemas naturales y los manejados hacen al cambio climático. Las actividades humanas están modificando los ecosistemas dramáticamente y hoy, cerca del ...

    • Effects of fertilizer type on nitrous oxide emission and ammonia volatilization in wheat and maize crops 

      Vangeli, Sebastián; Posse Beaulieu, Gabriela; Beget, Maria Eugenia; Otero Estrada, Edit; Valdettaro, Roció Antonella; Oricchio, Patricio; Kandus, Mariana Virginia; Di Bella, Carlos Marcelo (Wiley, 2022-01-28)
      About half of the applied nitrogen (N) is not consumed by crops, causing environmental and economic costs. This N can be lost as ammonia (NH3) volatilization, nitrous oxide (N2O) emission or leaching, among others. This ...

    • Emisiones de óxido nitroso desde suelos agrícolas y alternativas para mitigarlas 

      Taboada, Miguel Angel; Cosentino, Vanina Rosa Noemi; Costantini, Alejandro Oscar (Asociación Argentina para el Progreso de las Ciencias, 2018)
      El óxido nitroso (N2O) es un gas efecto invernadero con un poder de calentamiento equivalente a 296 veces mayor que el del dióxido de carbono (CO2). El N2O es producido a partir del nitrógeno mineral que entra a los ...

    • Emisión de óxido nitroso en secuencias de cultivos con diferente participación de soja en siembra directa 

      Piccinetti, Carlos Fabian (Universidad Nacional de Luján, 2018-09)
      El N-N2O es uno de los principales gases de efecto invernadero y su potencial de calentamiento es aproximadamente 300 veces superior a la del CO2. Se emite desde el suelo debido los procesos microbianos de nitrificación y ...

    • Evaluación de las emisiones de N2O provenientes de excretas bovinas en un sistema pastoril 

      Banegas, Natalia Romina; Viruel, Emilce; Grucci, María Victoria; Beltran, Marcelo Javier; Cosentino, Vanina Rosa Noemi (Asociación Argentina Ciencias del Suelo (AACS), 2024-05-21)
      Los sistemas pastoriles bovinos del Chaco Seco con pasturas megatérmicas todavía no reportan valores de emisión de N2O provenientes de las excretas generadas. El objetivo de este trabajo fue cuantificar la emisión de N2O ...

    • Evaluation of nitrous oxide emission by soybean inoculated with Bradyrhizobium strains commonly used as inoculants in South America 

      Obando, Melissa; Antonelli, Cristian; Casanave, Sheila; Maguire, Vanina; Torres, Daniela; Pérez, Gabriela; Bailleres, Matias Andres; Donadío, Florencia; Creus, Cecilia; Videla, Cecilia; Puente, Mariana Laura; Zilli, Jerri; Alves, Bruno; Ruiz, Oscar; Bedmar, Eulogio; Cassán, Fabricio (Springer, 2022-01-13)
      Aims The purpose of this work was to analyze the agronomic and environmental performance of soybean plants inoculated with the Bradyrhizobium strains widely used as soybean biofertilizers in South America and to determine ...

    • Fertilización nitrogenada y emisiones de oxido nitroso en cultivo de maíz 

      Alvarez, Carolina; Alvarez, Carina; Alves, Bruno J.R.; Costantini, Alejandro Oscar (Asociación Argentina Ciencias del Suelo, 2023-04-01)
      El óxido nitroso (N20) es un gas de efecto invernadero (GEI) y la agricultura es la principal fuente antropogénica de este gas. El estudio evaluó las emisiones de N2O a partir del uso de diferentes tipos (urea y UAN) y ...

    • Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops 

      Cosentino, Vanina Rosa Noemi; Figueiro Aureggi, Santiago Andres; Taboada, Miguel Angel (Wiley, 2013-10)
      Nitrous oxide (N2O) is emitted to the atmosphere as a by‐product of nitrification and denitrification by soil microbial processes. Differences in climate, soil and management regulate these processes, causing N2O emissions ...

    • Impact of land use during winter on the balance of greenhouse gases 

      Posse Beaulieu, Gabriela; Lewczuk, Nuria Andrea; Di Bella, Carlos Marcelo; Richter, Klaus; Oricchio, Patricio; Hilbert, Jorge Antonio (Wiley, 2018)
      The increase in atmospheric greenhouse gases (GHGs) can be mitigated by capturing CO2 from the atmosphere and/or by reducing their emissions. Replacing winter intercrop fallow by cover crops (CCs) can sequester carbon and ...

    • Increases in nitrogen use efficiency decrease nitrous oxide emissions but can penalize yield in sugarcane 

      Chalco Vera, Jorge Elías; Portocarrero, Rocio; Piñeiro, Gervasio; Acreche, Martin Moises (Springer, 2021-11)
      Nitrogen (N) fertilization strategies focused on increasing nitrogen use efficiency (NUE) and decreasing nitrous oxide (N2O) emissions are important for sustainable crop production. In sugarcane, however, a joint assessment ...

    • MAGGnet : an international network to foster mitigation of agricultural greehouse gases 

      Lewczuk, Nuria; Posse Beaulieu, Gabriela; Liebig, M.A.; Franzluebbers, A.J.; Alvarez, Carolina; Chiesa, Tomás Della; Piñeiro, Gervasio; Yahdjian, María Laura; Grace, P.; Cabral, Osvaldo Machado Rodrigues; Martin-Neto, Ladislau; Rodrigues, Renato de Aragao Ribeiro; Amiro, B.; Angers, D.; Hao, X.; Oelbermann, M.; Tenuta, M.; Munkholm, L.J.; Regina, K.; Cellier, Pierre; Ehrhardt, Fiona; Richard, G.; Dechow, R.; Agus, F.; Widiarta, N.; Spink, J.; Berti, Antonio; Grignani, Carlo; Mazzoncini, Marco; Orsini, Roberto; Roggero, Pier Paolo; Seddaiu, Giovanna; Tei, Francesco; Ventrella, Domenico; Vitali, Giuliano; Kishimoto-Mo, A.; Shirato, Y.; Sudo, S.; Shin, J.; Schipper, L.; Savé, Robert; Leifeld, J.; Spadavecchia, L.; Yeluripati, J.; Del Grosso, Stephen J.; Rice, Charles W.; Sawchik, Jorge (2016)
      Research networks provide a framework for review, synthesis and systematic testing of theories by multiple scientists across international borders critical for addressing global-scale issues. In 2012, a GHG research network ...

    • Methane and nitrous oxide emissions from dung patches deposited by grazing cattle supplemented with maize grain 

      Lombardi, Banira; Alvarado, Patricia Inés; Ricci, Patricia; Guzmán, Sergio Alejandro; Gonda, Horacio Leandro; Juliarena, Maria Paula (Elsevier, 2021-07-13)
      Feeding management represents an opportunity to improve cattle performance in grazing-based production systems and to mitigate emissions of greenhouse gases (GHG) from livestock production. However, it is unclear how diet ...

    • Nitrous oxide emission after the addition of organic residues on soil surface 

      Gregorutti, Viviana Carolina; Caviglia, Octavio (Elsevier, 2017)
      The addition of organic amendments with a low Carbon:Nitrogen (C:N) ratio to restore degraded soils may increase the emission of greenhouse gases and affect the storage of these elements in the topsoil. Our objectives were ...