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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
23/08/2016 |
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Data da última atualização: |
18/01/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VERAS, M. de S.; RAMOS, M. L. G.; OLIVEIRA, D. N. S.; FIGUEIREDO, C. C. de; CARVALHO, A. M. de; PULROLNIK, K.; SOUZA, K. W. de. |
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Afiliação: |
ARMINDA MOREIRA DE CARVALHO, CPAC; KARINA PULROLNIK, CPAC; KLEBERSON WORSLLEY DE SOUZA, CPAC. |
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Título: |
Cover crops and nitrogen fertilization effects on nitrogen soil fractions under corn cultivation in a no-tillage system. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 40, 2016. |
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Páginas: |
12 p. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
ABSTRACT: The use of cover crops has recently increased and represents an essential practice for the sustainability of no-tillage systems in the Cerrado region. However, there is little information on the effects of nitrogen fertilization and cover crop use on nitrogen soil fractions. This study assessed changes in the N forms in soil cropped to cover crops prior to corn growing. The experiment consisted of a randomized complete block design arranged in split-plots with three replications. Cover crops were tested in the plots, and the N topdressing fertilization was assessed in the subplots. The following cover species were planted in succession to corn for eight years: Urochloa ruziziensis, Canavalia brasiliensis M. ex Benth, Cajanus cajan (L.) Millsp, and Sorghum bicolor (L.) Moench. After corn harvesting, the soil was sampled at depths of 0.00-0.10 and 0.10-0.20 m. The cover crops showed different effects at different soil depths. The soil cultivated with U. ruziziensis showed higher contents of total-N and particulate-N than the soil cultivated with C. cajan. Particulate-N was the most sensitive to changes in the soil management among the fractions of N assessed. The soil under N topdressing showed a lower content of available-N in the 0.10-0.20 m layer, which may be caused by the season in which the sampling was conducted or the greater uptake of the available-N by corn. |
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Palavras-Chave: |
Adubação e nutrição de culturas anuais; Cultura anual; Fertilization and nutrition of annual crops; Nutrição de plantas. |
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Thesagro: |
Adubação; Manejo do solo; Nutrição vegetal. |
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Thesaurus Nal: |
plant nutrition; soil management. |
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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/153503/1/Arminda-Cover-crops.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/146708/1/0100-0683-rbcs-18069657rbcs20150092.pdf
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Marc: |
LEADER 02363naa a2200313 a 4500
001 2061140
005 2017-01-18
008 2016 bl uuuu u00u1 u #d
100 1 $aVERAS, M. de S.
245 $aCover crops and nitrogen fertilization effects on nitrogen soil fractions under corn cultivation in a no-tillage system.
260 $c2016
300 $a12 p.
520 $aABSTRACT: The use of cover crops has recently increased and represents an essential practice for the sustainability of no-tillage systems in the Cerrado region. However, there is little information on the effects of nitrogen fertilization and cover crop use on nitrogen soil fractions. This study assessed changes in the N forms in soil cropped to cover crops prior to corn growing. The experiment consisted of a randomized complete block design arranged in split-plots with three replications. Cover crops were tested in the plots, and the N topdressing fertilization was assessed in the subplots. The following cover species were planted in succession to corn for eight years: Urochloa ruziziensis, Canavalia brasiliensis M. ex Benth, Cajanus cajan (L.) Millsp, and Sorghum bicolor (L.) Moench. After corn harvesting, the soil was sampled at depths of 0.00-0.10 and 0.10-0.20 m. The cover crops showed different effects at different soil depths. The soil cultivated with U. ruziziensis showed higher contents of total-N and particulate-N than the soil cultivated with C. cajan. Particulate-N was the most sensitive to changes in the soil management among the fractions of N assessed. The soil under N topdressing showed a lower content of available-N in the 0.10-0.20 m layer, which may be caused by the season in which the sampling was conducted or the greater uptake of the available-N by corn.
650 $aplant nutrition
650 $asoil management
650 $aAdubação
650 $aManejo do solo
650 $aNutrição vegetal
653 $aAdubação e nutrição de culturas anuais
653 $aCultura anual
653 $aFertilization and nutrition of annual crops
653 $aNutrição de plantas
700 1 $aRAMOS, M. L. G.
700 1 $aOLIVEIRA, D. N. S.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aCARVALHO, A. M. de
700 1 $aPULROLNIK, K.
700 1 $aSOUZA, K. W. de
773 $tRevista Brasileira de Ciência do Solo$gv. 40, 2016.
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Embrapa Cerrados (CPAC) |
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