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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
28/09/2022 |
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Data da última atualização: |
28/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, A. M. de; SANTOS, D. C. R. dos; RAMOS, M. L. G.; MARCHAO, R. L.; VILELA, L.; SOUSA, T. R. de; MALAQUIAS, J. V.; GONÇALVES, A. D. M. de A.; COSER, T. R.; OLIVEIRA, A. D. de. |
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Afiliação: |
ARMINDA MOREIRA DE CARVALHO, CPAC; DIVINA CLEA RESENDE DOS SANTOS; MARIA LUCRECIA GEROSA RAMOS; ROBELIO LEANDRO MARCHAO, CPAC; LOURIVAL VILELA, CPAC; THAIS RODRIGUES DE SOUSA; JUACI VITORIA MALAQUIAS, CPAC; ADRIANO DICESAR MARTINS DE ARAUJO GONÇALVES; THAIS RODRIGUES COSER; ALEXSANDRA DUARTE DE OLIVEIRA, CPAC. |
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Título: |
Nitrous oxide emissions from a long-term integrated crop-livestock system with two levels of P and K fertilization. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Land, v. 11, n. 1535, 2022. |
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Páginas: |
16 p. |
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DOI: |
https://doi.org/10.3390/land11091535 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Nitrous oxide (N2O) emissions resulting from nitrogen (N) fertilization have been docu- mented. However, no data on the effects of other nutrients, such as phosphate (P) and potassium (K), on N2O emissions in integrated crop?livestock systems are available so far. In the 2015/2016 and 2016/2017 growing seasons, we measured N2O emissions from a long-term system, established in 1991 in the Cerrado biome (a tropical savanna ecoregion in Brazil), fertilized with two P and K levels. The studied no-tillage farming systems consisted of continuous crops fertilized with half of the recommended P and K rates (CC-F1), continuous crops at the recommended P and K rates (CC-F2), an integrated crop?livestock system with half of the recommended P and K rates (ICL-F1), and an integrated crop?livestock at the recommended P and K rates (ICL-F2). The cumulative N2O emissions (603 days) and soil chemical properties were analyzed as a 2 × 2 factorial design (long-term agricultural systems x fertilization). The cumulative N2O emissions from CC-F2 and ICL-F1 were 2.74 and 1.12 kg N ha−1, respectively. The yield-scaled N2O emissions from soybean were 55.5% lower from ICL-F1 than from CC-F2 in the 2015/2016 growing season. For off-season sorghum, the mean yield-scaled N2O emissions were 216 mg N2O m−2 kg−1 (in a range from 79.83 to 363.52 mg N2O m−2 kg−1, for ICL-F2 and CC-F1, respectively). The absence of pasture and the presence of soybean and sorghum promoted the highest cumulative N2O emissions, favored by the recommended rate in relation to half of the P and K. In the total evaluation period (603 days), the presence of grazed land in the years prior to this study and land fertilized with half the recommended P and K rates in an integrated crop?livestock system reduced the resulting cumulative N2O emis- sions by 59%. Thus, we conclude that crop?livestock systems can be beneficial in reducing P and K applications and also in mitigating N2O emissions in comparison with continuous cropping systems fertilized with the full recommended P and K rates. In view of the global fertilizer crisis, this aspect is extremely relevant for agriculture in Brazil and around the world. MenosAbstract: Nitrous oxide (N2O) emissions resulting from nitrogen (N) fertilization have been docu- mented. However, no data on the effects of other nutrients, such as phosphate (P) and potassium (K), on N2O emissions in integrated crop?livestock systems are available so far. In the 2015/2016 and 2016/2017 growing seasons, we measured N2O emissions from a long-term system, established in 1991 in the Cerrado biome (a tropical savanna ecoregion in Brazil), fertilized with two P and K levels. The studied no-tillage farming systems consisted of continuous crops fertilized with half of the recommended P and K rates (CC-F1), continuous crops at the recommended P and K rates (CC-F2), an integrated crop?livestock system with half of the recommended P and K rates (ICL-F1), and an integrated crop?livestock at the recommended P and K rates (ICL-F2). The cumulative N2O emissions (603 days) and soil chemical properties were analyzed as a 2 × 2 factorial design (long-term agricultural systems x fertilization). The cumulative N2O emissions from CC-F2 and ICL-F1 were 2.74 and 1.12 kg N ha−1, respectively. The yield-scaled N2O emissions from soybean were 55.5% lower from ICL-F1 than from CC-F2 in the 2015/2016 growing season. For off-season sorghum, the mean yield-scaled N2O emissions were 216 mg N2O m−2 kg−1 (in a range from 79.83 to 363.52 mg N2O m−2 kg−1, for ICL-F2 and CC-F1, respectively). The absence of pasture and the presence of soybean and sorghum promote... Mostrar Tudo |
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Thesagro: |
Agricultura Sustentável; Efeito Estufa; Gás. |
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Thesaurus Nal: |
Greenhouse gas emissions; Sustainable agriculture. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146942/1/Arminda-Nitrous-Oxide-Emissions-from-a-Long-Term-Integrated.pdf
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Marc: |
LEADER 03169naa a2200313 a 4500
001 2146942
005 2022-09-28
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/land11091535$2DOI
100 1 $aCARVALHO, A. M. de
245 $aNitrous oxide emissions from a long-term integrated crop-livestock system with two levels of P and K fertilization.$h[electronic resource]
260 $c2022
300 $a16 p.
520 $aAbstract: Nitrous oxide (N2O) emissions resulting from nitrogen (N) fertilization have been docu- mented. However, no data on the effects of other nutrients, such as phosphate (P) and potassium (K), on N2O emissions in integrated crop?livestock systems are available so far. In the 2015/2016 and 2016/2017 growing seasons, we measured N2O emissions from a long-term system, established in 1991 in the Cerrado biome (a tropical savanna ecoregion in Brazil), fertilized with two P and K levels. The studied no-tillage farming systems consisted of continuous crops fertilized with half of the recommended P and K rates (CC-F1), continuous crops at the recommended P and K rates (CC-F2), an integrated crop?livestock system with half of the recommended P and K rates (ICL-F1), and an integrated crop?livestock at the recommended P and K rates (ICL-F2). The cumulative N2O emissions (603 days) and soil chemical properties were analyzed as a 2 × 2 factorial design (long-term agricultural systems x fertilization). The cumulative N2O emissions from CC-F2 and ICL-F1 were 2.74 and 1.12 kg N ha−1, respectively. The yield-scaled N2O emissions from soybean were 55.5% lower from ICL-F1 than from CC-F2 in the 2015/2016 growing season. For off-season sorghum, the mean yield-scaled N2O emissions were 216 mg N2O m−2 kg−1 (in a range from 79.83 to 363.52 mg N2O m−2 kg−1, for ICL-F2 and CC-F1, respectively). The absence of pasture and the presence of soybean and sorghum promoted the highest cumulative N2O emissions, favored by the recommended rate in relation to half of the P and K. In the total evaluation period (603 days), the presence of grazed land in the years prior to this study and land fertilized with half the recommended P and K rates in an integrated crop?livestock system reduced the resulting cumulative N2O emis- sions by 59%. Thus, we conclude that crop?livestock systems can be beneficial in reducing P and K applications and also in mitigating N2O emissions in comparison with continuous cropping systems fertilized with the full recommended P and K rates. In view of the global fertilizer crisis, this aspect is extremely relevant for agriculture in Brazil and around the world.
650 $aGreenhouse gas emissions
650 $aSustainable agriculture
650 $aAgricultura Sustentável
650 $aEfeito Estufa
650 $aGás
700 1 $aSANTOS, D. C. R. dos
700 1 $aRAMOS, M. L. G.
700 1 $aMARCHAO, R. L.
700 1 $aVILELA, L.
700 1 $aSOUSA, T. R. de
700 1 $aMALAQUIAS, J. V.
700 1 $aGONÇALVES, A. D. M. de A.
700 1 $aCOSER, T. R.
700 1 $aOLIVEIRA, A. D. de
773 $tLand$gv. 11, n. 1535, 2022.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
10/11/2023 |
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Data da última atualização: |
13/11/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, S. C. A. de; FABRÍCIO, R.; AGUIAR, A. V. de. |
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Afiliação: |
SARA CAROLINE ALMEIDA DE OLIVEIRA, UNIVERSIDADE FEDERAL DO PARANÁ; RAONY FABRÍCIO, UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ; ANANDA VIRGINIA DE AGUIAR, CNPF. |
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Título: |
Determinação do período de embebição de sementes de espécies de pinus para viabilizar maior porcentagem de germinação. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 21., 2022, Colombo. Anais... Colombo: Embrapa Florestas, 2023. |
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Páginas: |
p. 19. |
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Série: |
(Embrapa Florestas. Documentos, 384). |
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Idioma: |
Português |
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Thesagro: |
Conservação; Melhoramento Genético Vegetal; Pinus spp; Produção de Sementes. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158212/1/EmbrapaFlorestas-2023-Documentos384-Res-19.pdf
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Marc: |
LEADER 00746nam a2200193 a 4500
001 2158212
005 2023-11-13
008 2023 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, S. C. A. de
245 $aDeterminação do período de embebição de sementes de espécies de pinus para viabilizar maior porcentagem de germinação.$h[electronic resource]
260 $aIn: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 21., 2022, Colombo. Anais... Colombo: Embrapa Florestas$c2023
300 $ap. 19.
490 $a(Embrapa Florestas. Documentos, 384).
650 $aConservação
650 $aMelhoramento Genético Vegetal
650 $aPinus spp
650 $aProdução de Sementes
700 1 $aFABRÍCIO, R.
700 1 $aAGUIAR, A. V. de
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Embrapa Florestas (CNPF) |
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