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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
04/04/2022 |
Data da última atualização: |
04/04/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
AMADORI, C.; DIECKOW, J.; ZANATTA, J. A.; MORAES, A. de; ZAMAN, M.; BAYER, C. |
Afiliação: |
CAROLINE AMADORI, UFPR; JEFERSON DIECKOW, UFPR; JOSILEIA ACORDI ZANATTA, CNPF; ANIBAL DE MORAES, UFPR; MOHAMMAD ZAMAN, International Atomic Energy Agency; CIMÉLIO BAYER, UFRGS. |
Título: |
Nitrous oxide and methane emissions from soil under integrated farming systems in southern Brazil. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Science of the Total Environment, v. 828, 154555, July 2022. 11 p. |
DOI: |
https://doi.org/10.1016/j.scitotenv.2022.154555 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed at evaluating soil nitrous oxide (N2O) and methane (CH4) emissions from integrated farming systems. Soil N2O and CH4 fluxes were assessed in a subtropical Cambisol in southern Brazil, using manual static chambers, over two years, in five farming systems (cropland, livestock, integrated crop-livestock, integrated livestock-forestry, and integrated crop-livestock-forestry). The study was conducted in four growing seasons: summer-1, winter-1, summer-2, winter-2. Integrated farming systems had lower soil N2O emissions than livestock. The observed reduction was possibly due to lower water-filled pore space (WFPS) in soils under integrated systems (average 59.5?64.7%, vs 70.4% in livestock) as indicated by correlation (r = 0.74). Cropland, including cover-crops and maize, also had lower N2O emission (by 40%) relative to livestock, of levels similar to those observed in integrated systems. Methane was consumed in soil, but it was not affected by farming systems, and offset only ~1.4% of the N2O emissions. In the rainiest season of summer-2, the soil had the highest WFPS (on average 71.4%) and thus the highest N2O emission (on average 9.79 kg N2O-N ha−1 season−1) and the lowest CH4 consumption (on average − 0.40 kg CH4-C ha−1 season−1); while the opposite trend occurred in the driest season of winter-2 (on average 57.3% WFPS; 0.64 kg N2O-N ha−1 season−1 and -0.90 kg CH4-C ha−1 season−1). Integrated farming systems including crop-livestock, livestock-forestry and crop-livestock-forestry reduced soil N2O emissions relative to sole livestock by 27?40%, but did not affect CH4 emissions. Seasonal variations of precipitation, and therefore WFPS were driving factors of the N2O and CH4 emissions. Overall, integrated farming systems show the potential to mitigate soil N2O emission compared to livestock system. MenosThis study aimed at evaluating soil nitrous oxide (N2O) and methane (CH4) emissions from integrated farming systems. Soil N2O and CH4 fluxes were assessed in a subtropical Cambisol in southern Brazil, using manual static chambers, over two years, in five farming systems (cropland, livestock, integrated crop-livestock, integrated livestock-forestry, and integrated crop-livestock-forestry). The study was conducted in four growing seasons: summer-1, winter-1, summer-2, winter-2. Integrated farming systems had lower soil N2O emissions than livestock. The observed reduction was possibly due to lower water-filled pore space (WFPS) in soils under integrated systems (average 59.5?64.7%, vs 70.4% in livestock) as indicated by correlation (r = 0.74). Cropland, including cover-crops and maize, also had lower N2O emission (by 40%) relative to livestock, of levels similar to those observed in integrated systems. Methane was consumed in soil, but it was not affected by farming systems, and offset only ~1.4% of the N2O emissions. In the rainiest season of summer-2, the soil had the highest WFPS (on average 71.4%) and thus the highest N2O emission (on average 9.79 kg N2O-N ha−1 season−1) and the lowest CH4 consumption (on average − 0.40 kg CH4-C ha−1 season−1); while the opposite trend occurred in the driest season of winter-2 (on average 57.3% WFPS; 0.64 kg N2O-N ha−1 season−1 and -0.90 kg CH4-C ha−1 season−1). Integrated farming system... Mostrar Tudo |
Palavras-Chave: |
Grazing rainfall; Integrated crop-livestock system; Non-CO2; WFPS. |
Thesagro: |
Eucalipto. |
Thesaurus Nal: |
Eucalyptus. |
Categoria do assunto: |
A Sistemas de Cultivo |
Marc: |
LEADER 02694naa a2200265 a 4500 001 2141776 005 2022-04-04 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.scitotenv.2022.154555$2DOI 100 1 $aAMADORI, C. 245 $aNitrous oxide and methane emissions from soil under integrated farming systems in southern Brazil.$h[electronic resource] 260 $c2022 520 $aThis study aimed at evaluating soil nitrous oxide (N2O) and methane (CH4) emissions from integrated farming systems. Soil N2O and CH4 fluxes were assessed in a subtropical Cambisol in southern Brazil, using manual static chambers, over two years, in five farming systems (cropland, livestock, integrated crop-livestock, integrated livestock-forestry, and integrated crop-livestock-forestry). The study was conducted in four growing seasons: summer-1, winter-1, summer-2, winter-2. Integrated farming systems had lower soil N2O emissions than livestock. The observed reduction was possibly due to lower water-filled pore space (WFPS) in soils under integrated systems (average 59.5?64.7%, vs 70.4% in livestock) as indicated by correlation (r = 0.74). Cropland, including cover-crops and maize, also had lower N2O emission (by 40%) relative to livestock, of levels similar to those observed in integrated systems. Methane was consumed in soil, but it was not affected by farming systems, and offset only ~1.4% of the N2O emissions. In the rainiest season of summer-2, the soil had the highest WFPS (on average 71.4%) and thus the highest N2O emission (on average 9.79 kg N2O-N ha−1 season−1) and the lowest CH4 consumption (on average − 0.40 kg CH4-C ha−1 season−1); while the opposite trend occurred in the driest season of winter-2 (on average 57.3% WFPS; 0.64 kg N2O-N ha−1 season−1 and -0.90 kg CH4-C ha−1 season−1). Integrated farming systems including crop-livestock, livestock-forestry and crop-livestock-forestry reduced soil N2O emissions relative to sole livestock by 27?40%, but did not affect CH4 emissions. Seasonal variations of precipitation, and therefore WFPS were driving factors of the N2O and CH4 emissions. Overall, integrated farming systems show the potential to mitigate soil N2O emission compared to livestock system. 650 $aEucalyptus 650 $aEucalipto 653 $aGrazing rainfall 653 $aIntegrated crop-livestock system 653 $aNon-CO2 653 $aWFPS 700 1 $aDIECKOW, J. 700 1 $aZANATTA, J. A. 700 1 $aMORAES, A. de 700 1 $aZAMAN, M. 700 1 $aBAYER, C. 773 $tScience of the Total Environment$gv. 828, 154555, July 2022. 11 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
03/12/2014 |
Data da última atualização: |
29/05/2017 |
Autoria: |
CARPENTIERI-PIPOLO, V.; ALMEIDA, L. A. de; KIIHL, R. A. de S.; PAGLIOSA, E. S. |
Afiliação: |
VALERIA CARPENTIERI-PIPOLO, CNPT; LEONES ALVES DE ALMEIDA, Tropical Melhoramento e Genética; ROMEU AFONSO DE SOUZA KIIHL, Tropical Melhoramento e Genética; EDUARDO STEFANI PAGLIOSA, UEL. |
Título: |
Inheritance of late flowering in natural variants of soybean cultivars under short-day confitions. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 10, p. 796-803, out. 2014. |
Idioma: |
Inglês |
Notas: |
Título em português: Herança do florescimento tardio em variantes naturais de cultivares de soja em condições de dias curtos. |
Conteúdo: |
The objective of this work was to determine the inheritance of the long juvenile period trait in natural variants of the Doko, BR 9 (Savana), Davis, Embrapa 1 (IAS 5RC), and BR 16 soybean cultivars. Complete diallel crosses were made between the Doko and BR 16 cultivars and their variants. A 3:1 segregation ratio was observed in the F2 populations of the 'Doko' x Doko?18T, 'Doko' x Doko?Milionária, 'Davis' x São Carlos, and 'BR 9 (Savana)' x MABR92?836 (Savanão) crosses, indicating that the long juvenile period trait is controlled by a pair of recessive genes. The difference in late flowering between the Doko cultivar and both of its variants was caused by a recessive spontaneous mutation at the same genetic locus. However, the variants Doko?18T and Doko?Milionária are identical mutants that share a pair of genes that control the long juvenile period under short?day conditions. These mutants can be used in breeding programs to develop cultivars adapted to low?latitude tropical regions. |
Palavras-Chave: |
Fotoperíodo; Mutação natural; Período juvenil longo; Programa de melhoramento; Região de baixa latitude. |
Thesagro: |
Glycine Max. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112958/1/Inheritance-of-late.pdf
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Marc: |
LEADER 01882naa a2200241 a 4500 001 2001495 005 2017-05-29 008 2014 bl uuuu u00u1 u #d 100 1 $aCARPENTIERI-PIPOLO, V. 245 $aInheritance of late flowering in natural variants of soybean cultivars under short-day confitions. 260 $c2014 500 $aTítulo em português: Herança do florescimento tardio em variantes naturais de cultivares de soja em condições de dias curtos. 520 $aThe objective of this work was to determine the inheritance of the long juvenile period trait in natural variants of the Doko, BR 9 (Savana), Davis, Embrapa 1 (IAS 5RC), and BR 16 soybean cultivars. Complete diallel crosses were made between the Doko and BR 16 cultivars and their variants. A 3:1 segregation ratio was observed in the F2 populations of the 'Doko' x Doko?18T, 'Doko' x Doko?Milionária, 'Davis' x São Carlos, and 'BR 9 (Savana)' x MABR92?836 (Savanão) crosses, indicating that the long juvenile period trait is controlled by a pair of recessive genes. The difference in late flowering between the Doko cultivar and both of its variants was caused by a recessive spontaneous mutation at the same genetic locus. However, the variants Doko?18T and Doko?Milionária are identical mutants that share a pair of genes that control the long juvenile period under short?day conditions. These mutants can be used in breeding programs to develop cultivars adapted to low?latitude tropical regions. 650 $aGlycine Max 653 $aFotoperíodo 653 $aMutação natural 653 $aPeríodo juvenil longo 653 $aPrograma de melhoramento 653 $aRegião de baixa latitude 700 1 $aALMEIDA, L. A. de 700 1 $aKIIHL, R. A. de S. 700 1 $aPAGLIOSA, E. S. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 49, n. 10, p. 796-803, out. 2014.
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