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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
09/03/2009 |
Data da última atualização: |
03/07/2014 |
Autoria: |
CARPANEZZI, A. A.; CARVALHO, P. E. R.; GARRIDO, M. A.; WAKASUGI, K.; ROTTA, E. |
Título: |
Populações base de Canafístula (Peltophorum dubium). |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
Colombo: EMBRAPA-URPFCS, 1984. |
Páginas: |
2 f. |
Série: |
(EMBRAPA-URPFCS. Pesquisa em andamento, 63). |
Idioma: |
Português |
Palavras-Chave: |
População base. |
Thesagro: |
Canafístula; Peltophorum Dubium. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101417/1/1984-PA63-Carpanezzi-PopulacoesBaseCanafistula.pdf
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Marc: |
LEADER 00574nam a2200205 a 4500 001 1315785 005 2014-07-03 008 1984 bl uuuu u0uu1 u #d 100 1 $aCARPANEZZI, A. A. 245 $aPopulações base de Canafístula (Peltophorum dubium). 260 $aColombo: EMBRAPA-URPFCS$c1984 300 $a2 f. 490 $a(EMBRAPA-URPFCS. Pesquisa em andamento, 63). 650 $aCanafístula 650 $aPeltophorum Dubium 653 $aPopulação base 700 1 $aCARVALHO, P. E. R. 700 1 $aGARRIDO, M. A. 700 1 $aWAKASUGI, K. 700 1 $aROTTA, E.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
01/12/2016 |
Data da última atualização: |
24/05/2017 |
Autoria: |
SEBEN JUNIOR, G. de F.; CORÁ, J. E.; LAL, R. |
Afiliação: |
GETULIO DE FREITAS SEBEM JUNIOR, UEMS; JOSÉ EDUARDO CORÁ, Universidade Estadual Paulista; RATTAN LAL, Ohio State University. |
Título: |
Soil aggregation according to the dynamics of carbon and nitrogen in soil under different cropping systems. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 9, p. 1652-1659, set. 2016. |
Idioma: |
Inglês |
Notas: |
Título em português: Agregação do solo de acordo com a dinâmica de carbono e nitrogênio em solo sob diferentes sistemas de cultivo. |
Conteúdo: |
The objective of this work was to evaluate total soil carbon and nitrogen, as well as their contents in particulate and mineral-associated C fractions; to determine C stock and sequestration rates in the soil; and to verify the effect of C and N contents on soil aggregation, using different crop rotations and crop sequences under no-tillage. The study was carried out for nine years in a clayey Oxisol. The treatments consisted of different cropping systems formed by the combination of three summer crops (cropped until March) ? corn (Zea mays) monocropping, soybean (Glycine max) monocropping, and soybean/corn rotation ? and seven second crops (crop successions). Soil samples were taken at the 0.00?0.10-m layer for physical fractionation of C and N, and to determine soil aggregation by the wet method. Soybean monocropping increased C and N in particulate C fraction, while the crop systems with corn monocropping x pigeon pea (Cajanus cajan), corn monocropping x sun hemp (Crotalaria juncea), and soybean monocropping x corn as a crop succession increased total C in the soil. Greater rates of soil C sequestration were observed with soybean/corn rotation and with soybean monocropping, as well as with sun hemp as a second crop. The increase in total N increases soil C stock. Soil aggregation was most affected at particulate C fraction. Increases in soil N promote C addition to particulate fraction and enhance soil aggregation. |
Palavras-Chave: |
Agregados do solo; Estoque de carbono; Matéria orgânica do solo; Sequestro de carbono. |
Thesagro: |
Planta de cobertura; Rotação de cultura. |
Thesaurus NAL: |
Carbon sequestration; Carbon sinks; Cover crops; Crop rotation; Soil aggregates; Soil organic matter. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150937/1/Soil-aggregatiuon-according.pdf
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Marc: |
LEADER 02489naa a2200301 a 4500 001 2057609 005 2017-05-24 008 2016 bl uuuu u00u1 u #d 100 1 $aSEBEN JUNIOR, G. de F. 245 $aSoil aggregation according to the dynamics of carbon and nitrogen in soil under different cropping systems. 260 $c2016 500 $aTítulo em português: Agregação do solo de acordo com a dinâmica de carbono e nitrogênio em solo sob diferentes sistemas de cultivo. 520 $aThe objective of this work was to evaluate total soil carbon and nitrogen, as well as their contents in particulate and mineral-associated C fractions; to determine C stock and sequestration rates in the soil; and to verify the effect of C and N contents on soil aggregation, using different crop rotations and crop sequences under no-tillage. The study was carried out for nine years in a clayey Oxisol. The treatments consisted of different cropping systems formed by the combination of three summer crops (cropped until March) ? corn (Zea mays) monocropping, soybean (Glycine max) monocropping, and soybean/corn rotation ? and seven second crops (crop successions). Soil samples were taken at the 0.00?0.10-m layer for physical fractionation of C and N, and to determine soil aggregation by the wet method. Soybean monocropping increased C and N in particulate C fraction, while the crop systems with corn monocropping x pigeon pea (Cajanus cajan), corn monocropping x sun hemp (Crotalaria juncea), and soybean monocropping x corn as a crop succession increased total C in the soil. Greater rates of soil C sequestration were observed with soybean/corn rotation and with soybean monocropping, as well as with sun hemp as a second crop. The increase in total N increases soil C stock. Soil aggregation was most affected at particulate C fraction. Increases in soil N promote C addition to particulate fraction and enhance soil aggregation. 650 $aCarbon sequestration 650 $aCarbon sinks 650 $aCover crops 650 $aCrop rotation 650 $aSoil aggregates 650 $aSoil organic matter 650 $aPlanta de cobertura 650 $aRotação de cultura 653 $aAgregados do solo 653 $aEstoque de carbono 653 $aMatéria orgânica do solo 653 $aSequestro de carbono 700 1 $aCORÁ, J. E. 700 1 $aLAL, R. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 51, n. 9, p. 1652-1659, set. 2016.
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