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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação; Embrapa Semiárido. |
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Data corrente: |
10/04/2017 |
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Data da última atualização: |
31/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FREITAS, R. C. A.; POPIN, G. V.; MILORI, D. M. B. P.; SIGNOR, D.; DRUMOND, M. A.; CERRI, C. E. P. |
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Afiliação: |
DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
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Título: |
Soil organic matter quality in Jatropha spp. plantations in different edaphoclimatic conditions. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: REVISTA BRASILEIRA DE CIÊNCIA DO SOLO, Viçosa, MG, n. 41, 18 p. 2017. |
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DOI: |
10.1590/18069657rbcs20160218 |
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Idioma: |
Inglês |
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Conteúdo: |
The substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial biomass (136 mg kg-1) were observed for annual crops. Jatropha cultivation increased C contents in the SOM fractions, C stocks, the CMI, and C and N in the microbial biomass with an increase in cultivation time, which demonstrates the potential of this long-term system for improving SOM quality. MenosThe substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial bi... Mostrar Tudo |
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Palavras-Chave: |
Carbon management index; Espectroscopia de fluorescência; Fracionamento de carbono do solo; Laser nduced fluorescence spectroscopy; Laser-induced fluorescence spectroscopy; Massa microbiana; Microbial biiomass; Mudança de uso da terra; Pinhão manso; Soil carbon fractionation. |
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Thesagro: |
Carbono; Matéria Orgânica; Planta oleaginosa; Solo; Vegetação nativa. |
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Thesaurus Nal: |
Land use change; Microbial biomass; Soil. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165916/1/PROCI-17-Soil-organic-matter-quality-....pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158778/1/Drumond-2017.pdf
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Marc: |
LEADER 03086naa a2200409 a 4500
001 2078612
005 2017-10-31
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1590/18069657rbcs20160218$2DOI
100 1 $aFREITAS, R. C. A.
245 $aSoil organic matter quality in Jatropha spp. plantations in different edaphoclimatic conditions.$h[electronic resource]
260 $c2017
520 $aThe substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial biomass (136 mg kg-1) were observed for annual crops. Jatropha cultivation increased C contents in the SOM fractions, C stocks, the CMI, and C and N in the microbial biomass with an increase in cultivation time, which demonstrates the potential of this long-term system for improving SOM quality.
650 $aLand use change
650 $aMicrobial biomass
650 $aSoil
650 $aCarbono
650 $aMatéria Orgânica
650 $aPlanta oleaginosa
650 $aSolo
650 $aVegetação nativa
653 $aCarbon management index
653 $aEspectroscopia de fluorescência
653 $aFracionamento de carbono do solo
653 $aLaser nduced fluorescence spectroscopy
653 $aLaser-induced fluorescence spectroscopy
653 $aMassa microbiana
653 $aMicrobial biiomass
653 $aMudança de uso da terra
653 $aPinhão manso
653 $aSoil carbon fractionation
700 1 $aPOPIN, G. V.
700 1 $aMILORI, D. M. B. P.
700 1 $aSIGNOR, D.
700 1 $aDRUMOND, M. A.
700 1 $aCERRI, C. E. P.
773 $tIn: REVISTA BRASILEIRA DE CIÊNCIA DO SOLO, Viçosa, MG$gn. 41, 18 p. 2017.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
14/01/2005 |
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Data da última atualização: |
14/01/2005 |
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Autoria: |
BIZETI, H. S.; CARVALHO, C. G. P. de; SOUZA, J. R. P. de; DESTRO, D. |
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Título: |
Path analysis under multicollinearity in soybean. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, Curitiba, vol. 47, no. 5, p. 669-676, Sept. 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity were not satisfactory. The ridge path analysis and the trait culling were efficient in reducing the adverse effects of multicollinearity. Both methods showed that only the number of nodes at maturity trait had a high direct effect on grain yield per plant. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01490naa a2200157 a 4500
001 1467770
005 2005-01-14
008 2004 bl --- 0-- u #d
100 1 $aBIZETI, H. S.
245 $aPath analysis under multicollinearity in soybean.
260 $c2004
520 $aThis study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity were not satisfactory. The ridge path analysis and the trait culling were efficient in reducing the adverse effects of multicollinearity. Both methods showed that only the number of nodes at maturity trait had a high direct effect on grain yield per plant.
700 1 $aCARVALHO, C. G. P. de
700 1 $aSOUZA, J. R. P. de
700 1 $aDESTRO, D.
773 $tBrazilian Archives of Biology and Technology, Curitiba, vol. 47, no. 5, p. 669-676, Sept. 2004.
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