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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
26/10/2015 |
Data da última atualização: |
19/01/2016 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
OLIVEIRA, L. D. da S.; MOURA, M. S. B. de; SILVA, T. G. F. da; CARMO, J. F. A. do; SOUSA, L. S. B. de. |
Afiliação: |
LEIDE DAYANE DA SILVA OLIVEIRA, Bolsista PIBIC; MAGNA SOELMA BESERRA DE MOURA, CPATSA; THIERES GEORGE FREIRE DA SILVA, Professor da Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, PE; JOSÉ FRANCISCO ALVES DO CARMO, Bolsista CNPq; LUCIANA SANDRA BASTOS DE SOUSA, Professora da Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, PE. |
Título: |
Coeficiente de cultura da cana-de-açúcar submetida à irrigação subsuperficial no Submédio do Vale do São Francisco. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 19., 2015, Lavras. Agrometeorologia no século 21: o desafio do uso sustentável dos biomas brasileiros: anais. Lavras: UFLA, 2015. |
Páginas: |
p. 2125-2129. |
Idioma: |
Português |
Conteúdo: |
Determinar o coeficiente de cultura da cana-de-açúcar irrigada durante o ciclo cana-soca (safra 2014- 2015), variedade VAT 90-212, na região do Submédio do Vale do são Francisco. |
Palavras-Chave: |
Cana-de-açúcar; Coeficiente hídrico; Razão de Bowen. |
Thesagro: |
Evapotranspiração; Irrigação. |
Thesaurus Nal: |
Sugarcane. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/131780/1/artigo-11.pdf
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Marc: |
LEADER 01077nam a2200241 a 4500 001 2027232 005 2016-01-19 008 2015 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, L. D. da S. 245 $aCoeficiente de cultura da cana-de-açúcar submetida à irrigação subsuperficial no Submédio do Vale do São Francisco.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 19., 2015, Lavras. Agrometeorologia no século 21: o desafio do uso sustentável dos biomas brasileiros: anais. Lavras: UFLA$c2015 300 $ap. 2125-2129. 520 $aDeterminar o coeficiente de cultura da cana-de-açúcar irrigada durante o ciclo cana-soca (safra 2014- 2015), variedade VAT 90-212, na região do Submédio do Vale do são Francisco. 650 $aSugarcane 650 $aEvapotranspiração 650 $aIrrigação 653 $aCana-de-açúcar 653 $aCoeficiente hídrico 653 $aRazão de Bowen 700 1 $aMOURA, M. S. B. de 700 1 $aSILVA, T. G. F. da 700 1 $aCARMO, J. F. A. do 700 1 $aSOUSA, L. S. B. de
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Embrapa Semiárido (CPATSA) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
07/02/2017 |
Data da última atualização: |
03/11/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
BRIEDIS, C.; SA, J. C. de M.; LAL, R.; TIVET, F.; FERREIRA, A. de O.; FRANCHINI, J. C.; SCHIMIGUEL, R.; HARTMAN, D. da C.; SANTOS, J. Z. dos. |
Afiliação: |
CLEVER BRIEDIS, UEPG; JOÃO CARLOS DE MORAES SÁ, UEPG; RATTAN LAL, Ohio State University; FLORENT TIVET, CIRAD; ADEMIR DE OLIVEIRA FERREIRA, UEPG; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; RAFAEL SCHIMIGUEL, UEPG; DAIANI DA CRUZ HARTMAN, UEPG. |
Título: |
Can highly weathered soils under conservation agriculture be C saturated? |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Catena, [S. l.], v. 147, p. 638-649, Dec. 2016. |
DOI: |
10.1016/j.catena.2016.08.021 |
Idioma: |
Inglês |
Conteúdo: |
Soil organic carbon (SOC) plays an essential function in global agroecosystems. Conservation agriculture (CA) associated with diverse and high C-input is an important tool to increase SOC, improve soil quality, and increase agronomic productivity. However, the information about the potential of highly weathered soils under CA to accumulate SOC, and when the SOC saturation may occur, is scarce. This study was based on the hypothesis that in highly weathered soil from tropical and subtropical agro-ecosystems, the potential to store SOC lies more in the sub-soil than in surface layers and is determined by nutrient scarcity. Thus, the aim of this study, performed in a long-term incubation experiment (30 months), was to: (i) assess the SOC flow and mineralization based on CO2-C emissions for estimating SOC accumulation; (ii) evaluate the impact of nutrient scarcity on C accumulation efficiency by soil layers; and (iii) determine when C saturation occurs in these soils. The incubation study was performed in three Brazilian Oxisols under long-term CA, and was comprised of four amounts of C-inputs (0, 6, 12 and 24 Mg C ha? 1) added at 0, 10 and 20-months to three soil layers (0–20, 20–40 and 40–100 cm). The CO2-C emission was 19.0, 9.0 and 7.0% higher in the 0–20 cm than that in 40–100 cm layer for Ponta Grossa, Londrina and Lucas do Rio Verde sites, respectively, which was associated with higher antecedent SOC content and fertility status. A higher SOC accumulation efficiency was observed for the 0–20 cm layer than in deeper layers. Nutrient scarcity in deep soil layers; especially that of P, Ca2 + and Mg2 +; was the driving force limiting SOC accumulation. Carbon saturation was not achieved indicating a high SOC storage capacity in these soils. Because these and similar soils cover a large global area, they possess a large C sink to mitigate atmospheric CO2-C. The potential SOC storage estimated for 20–100 cm layer based on this study and upscaling for 1/3 Brazilian Oxisols (100 million ha) may offset 0.06 to 0.36 Pg C yr? 1 or 5.5% to 32.7% of the global annual greenhouse gas emissions by land use change. MenosSoil organic carbon (SOC) plays an essential function in global agroecosystems. Conservation agriculture (CA) associated with diverse and high C-input is an important tool to increase SOC, improve soil quality, and increase agronomic productivity. However, the information about the potential of highly weathered soils under CA to accumulate SOC, and when the SOC saturation may occur, is scarce. This study was based on the hypothesis that in highly weathered soil from tropical and subtropical agro-ecosystems, the potential to store SOC lies more in the sub-soil than in surface layers and is determined by nutrient scarcity. Thus, the aim of this study, performed in a long-term incubation experiment (30 months), was to: (i) assess the SOC flow and mineralization based on CO2-C emissions for estimating SOC accumulation; (ii) evaluate the impact of nutrient scarcity on C accumulation efficiency by soil layers; and (iii) determine when C saturation occurs in these soils. The incubation study was performed in three Brazilian Oxisols under long-term CA, and was comprised of four amounts of C-inputs (0, 6, 12 and 24 Mg C ha? 1) added at 0, 10 and 20-months to three soil layers (0–20, 20–40 and 40–100 cm). The CO2-C emission was 19.0, 9.0 and 7.0% higher in the 0–20 cm than that in 40–100 cm layer for Ponta Grossa, Londrina and Lucas do Rio Verde sites, respectively, which was associated with higher antecedent SOC content and fertility status. A higher SOC accumulation efficiency was o... Mostrar Tudo |
Thesagro: |
Conservação do solo; Oxisol. |
Thesaurus NAL: |
Soil organic carbon. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02912naa a2200265 a 4500 001 2062973 005 2017-11-03 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1016/j.catena.2016.08.021$2DOI 100 1 $aBRIEDIS, C. 245 $aCan highly weathered soils under conservation agriculture be C saturated?$h[electronic resource] 260 $c2016 520 $aSoil organic carbon (SOC) plays an essential function in global agroecosystems. Conservation agriculture (CA) associated with diverse and high C-input is an important tool to increase SOC, improve soil quality, and increase agronomic productivity. However, the information about the potential of highly weathered soils under CA to accumulate SOC, and when the SOC saturation may occur, is scarce. This study was based on the hypothesis that in highly weathered soil from tropical and subtropical agro-ecosystems, the potential to store SOC lies more in the sub-soil than in surface layers and is determined by nutrient scarcity. Thus, the aim of this study, performed in a long-term incubation experiment (30 months), was to: (i) assess the SOC flow and mineralization based on CO2-C emissions for estimating SOC accumulation; (ii) evaluate the impact of nutrient scarcity on C accumulation efficiency by soil layers; and (iii) determine when C saturation occurs in these soils. The incubation study was performed in three Brazilian Oxisols under long-term CA, and was comprised of four amounts of C-inputs (0, 6, 12 and 24 Mg C ha? 1) added at 0, 10 and 20-months to three soil layers (0–20, 20–40 and 40–100 cm). The CO2-C emission was 19.0, 9.0 and 7.0% higher in the 0–20 cm than that in 40–100 cm layer for Ponta Grossa, Londrina and Lucas do Rio Verde sites, respectively, which was associated with higher antecedent SOC content and fertility status. A higher SOC accumulation efficiency was observed for the 0–20 cm layer than in deeper layers. Nutrient scarcity in deep soil layers; especially that of P, Ca2 + and Mg2 +; was the driving force limiting SOC accumulation. Carbon saturation was not achieved indicating a high SOC storage capacity in these soils. Because these and similar soils cover a large global area, they possess a large C sink to mitigate atmospheric CO2-C. The potential SOC storage estimated for 20–100 cm layer based on this study and upscaling for 1/3 Brazilian Oxisols (100 million ha) may offset 0.06 to 0.36 Pg C yr? 1 or 5.5% to 32.7% of the global annual greenhouse gas emissions by land use change. 650 $aSoil organic carbon 650 $aConservação do solo 650 $aOxisol 700 1 $aSA, J. C. de M. 700 1 $aLAL, R. 700 1 $aTIVET, F. 700 1 $aFERREIRA, A. de O. 700 1 $aFRANCHINI, J. C. 700 1 $aSCHIMIGUEL, R. 700 1 $aHARTMAN, D. da C. 700 1 $aSANTOS, J. Z. dos 773 $tCatena, [S. l.]$gv. 147, p. 638-649, Dec. 2016.
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