Search Results - "Jantalia, Claudia P"

Bovine urine and dung deposited on Brazilian savannah pastures contribute differently to direct and indirect soil nitrous oxide emissions by Lessa, Ana Carolina R., Madari, Beata E., Paredes, Debora S., Boddey, Robert M., Urquiaga, Segundo, Jantalia, Claudia P., Alves, Bruno J.R.

“…•Emissions of N2O and NH3 from cattle excreta on a Brachiaria pasture were compared.•Seasonal differences in N2O and NH3emissions from cattle excreta were…”
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Selection of the most suitable sampling time for static chambers for the estimation of daily mean N2O flux from soils by Alves, Bruno J.R., Smith, Keith A., Flores, Rilner A., Cardoso, Abmael S., Oliveira, William R.D., Jantalia, Claudia P., Urquiaga, Segundo, Boddey, Robert M.

“…Soil N2O fluxes are frequently assessed by the use of static chambers with a single daily sampling. In this study, two experiments were conducted in two…”
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Changes in soil organic carbon during 22 years of pastures, cropping or integrated crop/livestock systems in the Brazilian Cerrado by de Sant-Anna, Selenobaldo A. C., Jantalia, Claudia P., Sá, Jerusa M., Vilela, Lourival, Marchão, Robélio L., Alves, Bruno J. R., Urquiaga, Segundo, Boddey, Robert M.

“…In Brazil’s central savanna region, government policy is to encourage the conversion of conventional plough tillage (PT) agriculture to no-till (NT) and raise…”
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Carbon accumulation at depth in Ferralsols under zero-till subtropical agriculture by BODDEY, ROBERT M, JANTALIA, CLAUDIA P, CONCEIÇÃO, PAULO C, ZANATTA, JOSILEIA A, BAYER, CIMÉLIO, MIELNICZUK, JOÃO, DIECKOW, JEFERSON, DOS SANTOS, HENRIQUE P, DENARDIN, JOSÉ E, AITA, CELSO, GIACOMINI, SANDRO J, ALVES, BRUNO J.R, URQUIAGA, SEGUNDO

“…Conservation agriculture can provide a low-cost competitive option to mitigate global warming with reduction or elimination of soil tillage and increase soil…”
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Soil Carbon Stocks under Productive and Degraded Brachiaria Pastures in the Brazilian Cerrado by Braz, Sérgio P., Urquiaga, Segundo, Alves, Bruno J.R., Jantalia, Claudia P., Guimarães, Ana Paula, Santos, Camila A., Santos, Sashia C., Machado Pinheiro, Érika F., Boddey, Robert M.

“…In the central savannah (Cerrados) region of Brazil approximately 50 Mha are occupied by Brachiaria pastures, most of which are classified as degraded. There…”
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Influence of no-tillage and frequency of a green manure legume in crop rotations for balancing N outputs and preserving soil organic C stocks by Zotarelli, Lincoln, Zatorre, Natalia P., Boddey, Robert M., Urquiaga, Segundo, Jantalia, Claudia P., Franchini, Julio C., Alves, Bruno J.R.

“…► We evaluate how no-tillage would affect system N balance and soil C and N stocks. ► Biological N2 fixation and fertilizer N inputs were measured in three…”
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Can 15N leaf-labelling reliably quantify rhizodeposited nitrogen remaining after a nodulated legume crop? by Araujo, Karla E. C., Vergara, Carlos, dos Santos, Ricardo C., Santos, Wadson de M., de Freitas Souza, Roberta, de Farias Silva, Caroline, Guimarães, Ana Paula, Jantalia, Claudia P., Urquiaga, Segundo, Araujo, Ednaldo S., Alves, Bruno J. R., Boddey, Robert M.

“…Soybean is Brazil´s most important grain crop and accumulates over 250 kg N ha −1 , principally from biological N 2 fixation. The residual N benefit depends…”
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Fluxes of nitrous oxide from soil under different crop rotations and tillage systems in the South of Brazil by Jantalia, Claudia P, dos Santos, Henrique P, Urquiaga, Segundo, Boddey, Robert M, Alves, Bruno J. R

“…The zero tillage (ZT) system is used in a large area (>24 Mha) of crop production in Brazil. This management system can contribute to soil C sequestration, but…”
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Ammonia volatilization and nitrous oxide emissions during soil preparation and N fertilization of elephant grass (Pennisetum purpureum Schum.) by de Morais, Rafael F., Boddey, Robert M., Urquiaga, Segundo, Jantalia, Claudia P., Alves, Bruno J.R.

“…Promising renewable fuels such as elephant grass in Brazil are under critical examination with reference to greenhouse gases (GHGs) produced during the…”
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A simple and easy method to measure ammonia volatilization: Accuracy under field conditions by MARTINS, Márcio R., SARKIS, Leonardo F., GUARESCHI, Roni F., SANTOS, Camila A., SANT'ANNA, Selenobaldo A.C., ZAMAN, Mohammad, JANTALIA, Claudia P., ALVES, Bruno J.R., BODDEY, Robert M., ARAÚJO, Ednaldo S., URQUIAGA, Segundo

“…Field studies on soil ammonia (NH3) volatilization are restricted in many countries owing to the high costs commonly demanded for accurate quantification. We…”
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Optimizing the use of open chambers to measure ammonia volatilization in field plots amended with urea by MARTINS, Márcio R., SARKIS, Leonardo F., SANT'ANNA, Selenobaldo A.C., SANTOS, Camila A., ARAUJO, Karla E., SANTOS, Ricardo C., ARAÚJO, Ednaldo S., ALVES, Bruno J.R., JANTALIA, Claudia P., BODDEY, Robert M., ZAMAN, Mohammad, URQUIAGA, Segundo

“…Measuring ammonia (NH3) volatilization from urea-fertilized soils is crucial for evaluation of practices that reduce gaseous nitrogen (N) losses in…”
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Changes in ¹⁵N natural abundance of biologically fixed N₂ in soybean due to shading, rhizobium strain and plant growth stage by Araujo, Karla E. C., Vergara, Carlos, Guimarães, Ana Paula, Rouws, Janaina R. C., Jantalia, Claudia P., Urquiaga, Segundo, Alves, Bruno J. R., Boddey, Robert M.

“…Aims The evaluation of 15 N abundance of N derived from biological N 2 fixation (BNF) in legume shoots ( ‘B S ’ value) is essential for quantifying BNF inputs…”
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Tillage effect on C stocks of a clayey Oxisol under a soybean-based crop rotation in the Brazilian Cerrado region by Jantalia, Cláudia P., Resck, Dimas V.S., Alves, Bruno J.R., Zotarelli, Lincoln, Urquiaga, Segundo, Boddey, Robert M.

“…A large area (180 Mha) of central Brazil is occupied by a savanna biome known as the Cerrado. Annual rainfall in this region varies from 1200 to 2000 mm,…”
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Soil nitrous oxide emissions under different management practices in the semiarid region of the Argentinian Pampas by Alvarez, Carolina, Costantini, Alejandro, Alvarez, Carina R., Alves, Bruno J. R., Jantalia, Claudia P., Martellotto, Eduardo E., Urquiaga, Segundo

“…The aim of this study was to analyze the influence of different crop sequences (soybean-corn and soybean–soybean) and tillage systems (no tillage and reduced…”
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Comments on “No‐Tillage and Soil‐Profile Carbon Sequestration: An On‐Farm Assessment” by Boddey, Robert M., Jantalia, Claudia P., Alves, Bruno J. R., Urquiaga, Segundo

“…[...] the two studies on free-draining Oxisols in southern Brazil indicate that, (i) C accumulation is highly dependent on N supply (a positive N balance from…”
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15N natural abundance of biologically fixed N2 in soybean is controlled more by the Bradyrhizobium strain than by the variety of the host plant by Pauferro, Natalie, Guimarães, Ana Paula, Jantalia, Claudia P, Urquiaga, Segundo, Alves, Bruno J.R, Boddey, Robert M

“…The 15N natural abundance technique is one of those most easily applied ‘on farm’ to evaluate the contribution of biological N2 fixation (BNF) to legume crops…”
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Nitrous oxide and ammonia emissions from N fertilization of maize crop under no-till in a Cerrado soil by Martins, Márcio R., Jantalia, Cláudia P., Polidoro, José C., Batista, Josimar N., Alves, Bruno J.R., Boddey, Robert M., Urquiaga, Segundo

“…•Higher N2O emissions were observed from ammonium sulfate than from the control.•The volatilized NH3 from urea was very low, with no difference from other…”
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Selection of the most suitable sampling time for static chambers for the estimation of daily mean N 2O flux from soils by Alves, Bruno J.R., Smith, Keith A., Flores, Rilner A., Cardoso, Abmael S., Oliveira, William R.D., Jantalia, Claudia P., Urquiaga, Segundo, Boddey, Robert M.

“…Soil N 2O fluxes are frequently assessed by the use of static chambers with a single daily sampling. In this study, two experiments were conducted in two…”
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Changes in .sup.15N natural abundance of biologically fixed N.sub.2 in soybean due to shading, rhizobium strain and plant growth stage by Araujo, Karla E. C, Vergara, Carlos, Guimarães, Ana Paula, Rouws, Janaina R. C, Jantalia, Claudia P, Urquiaga, Segundo, Alves, Bruno J. R

“…Aims The evaluation of .sup.15N abundance of N derived from biological N.sub.2 fixation (BNF) in legume shoots ('B.sub.S' value) is essential for quantifying…”
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Selection of the most suitable sampling time for static chambers for the estimation of daily mean N20 flux from soils by ALVES, Bruno J. R, SMITH, Keith A, FLORES, Rilner A, CARDOSO, Abmael S, OLIVEIRA, William R. D, JANTALIA, Claudia P, URQUIAGA, Segundo, BODDEY, Robert M

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