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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
28/09/2022 |
Data da última atualização: |
28/09/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Nitrous Oxide Emissions from a Long-Term Integrated Crop?Livestock System with Two Levels of P and K Fertilization. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Land, v. 11, n. 1535, 2022. |
Páginas: |
16 p. |
DOI: |
https://doi.org/10.3390/land11091535 |
Idioma: |
Inglês |
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 |
Thesagro: |
Agricultura Sustentável; Efeito Estufa; Gás. |
Thesaurus Nal: |
Greenhouse gas emissions; Sustainable agriculture. |
Categoria do assunto: |
-- |
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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181. | | BARROS, J. D.; ARCOVERDE, G. F. B.; CARVALHO, A. C. F. de; VILA, A. J. T.; FAUSTINO, A. B.; MELO, A. A. de; VERAS, A. L.; MARTINS, C. S. G.; MELO, D. M. A. de; SANTOS, D. C. dos; VERDE, D. C. A. L.; TROVÃO, D. M. de B. M.; SILVA, E. S. da; SILVA, E. D. da C.; BARBOSA, E.; SILVA, F. G. C. da; ARAÚJO, H. F. P. de; MAIA, I. C.; SA, I. B.; RODRIGUES, J. de D.; CUNHA, J. E.; COSTA, J. D. da; CARVALHO, J. V.; LIMA, L. de C.; SANTOS, L. M. dos; ARAÚJO, L. N. de; COELHO, L. F. M.; VEIGA, M. E. B. da; ARAÚJO, M. C.; OLIVEIRA, M. G. de; MELO, M. G. P. de; GADELHA, M. A. da M. B.; SANTOS, M. C. dos; LIRA FILHO, P. de B.; LIMA, R. B. de; BATISTA, R. D.; OLIVEIRA, T. C. T. de; BEZERRA, U. A.; SOUZA, V. N. de. Processo participativo sobre degradação da terra em regiões do Semiárido brasileiro. São José dos Campos: SP, INPE, 2023. 53 p. il. color sid.inpe.br/mtc-m21d/2023/04.18.16.48-RPQBiblioteca(s): Embrapa Semiárido. |
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