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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
08/09/2011 |
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Data da última atualização: |
08/09/2011 |
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Autoria: |
SARTORI, G. M. S.; MARCHESAN, E.; LUZ, D. S. da; CASSOL. A. P. V.; FIGUEIREDO, M. C. dos S.; OLIVEIRA, M. A.; SILVEIRA, M. V. E. da; FERREIRA, R. B. |
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Título: |
Manejo da adubação e seus efeitos na ocorrência de algas e na produtividade de arroz irrigado em áreas com residual de imidazolinonas. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Ciência Rural, Santa Maria, v. 41, n. 8., p. 1323-1330, ago. 2011. |
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Idioma: |
Português |
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Conteúdo: |
Em determinadas áreas de arroz, ocorre o desenvolvimento de algas que, dependendo da quantidade e associadas com presença de residual no solo de herbicidas do grupo das imidazolinonas, afetam o desenvolvimento do arroz na fase inicial. O objetivo do trabalho foi avaliar manejos da adubação de arroz na composição e estrutura das comunidades de algas e na produtividade de arroz irrigado em áreas com residual de herbicidas do grupo das imidazolinonas. O experimento foi conduzido na safra 2008/09, na Universidade Federal de Santa Maria, onde havia sido aplicado imazethapyr + imazapic na dose de (120+40g i.a. ha-¹), na safra 2007/08. Os tratamentos foram compostos por manejos de adubação e duas cultivares de arroz irrigado. A cultivar 'IRGA 417' apresentou maior fitotoxicidade, mas, da mesma forma que os manejos de adubação, esta não interferiu na produtividade de grãos e no desenvolvimento de algas. Os manejos de adubação utilizados e a fitotoxicidade de plantas não influenciam no desenvolvimento de microalgas no fitoplâncton e no perifíton, bem como na produtividade das cultivares de arroz irrigado 'IRGA 422 CL' e 'IRGA 417'. |
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Palavras-Chave: |
Adubação; Arroz irrigado; Fertilizante; Fitoplâncton; Fitotoxicidade; Perifíton. |
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Categoria do assunto: |
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Marc: |
LEADER 02003naa a2200277 a 4500
001 1080122
005 2011-09-08
008 2011 bl uuuu u00u1 u #d
100 1 $aSARTORI, G. M. S.
245 $aManejo da adubação e seus efeitos na ocorrência de algas e na produtividade de arroz irrigado em áreas com residual de imidazolinonas.
260 $c2011
520 $aEm determinadas áreas de arroz, ocorre o desenvolvimento de algas que, dependendo da quantidade e associadas com presença de residual no solo de herbicidas do grupo das imidazolinonas, afetam o desenvolvimento do arroz na fase inicial. O objetivo do trabalho foi avaliar manejos da adubação de arroz na composição e estrutura das comunidades de algas e na produtividade de arroz irrigado em áreas com residual de herbicidas do grupo das imidazolinonas. O experimento foi conduzido na safra 2008/09, na Universidade Federal de Santa Maria, onde havia sido aplicado imazethapyr + imazapic na dose de (120+40g i.a. ha-¹), na safra 2007/08. Os tratamentos foram compostos por manejos de adubação e duas cultivares de arroz irrigado. A cultivar 'IRGA 417' apresentou maior fitotoxicidade, mas, da mesma forma que os manejos de adubação, esta não interferiu na produtividade de grãos e no desenvolvimento de algas. Os manejos de adubação utilizados e a fitotoxicidade de plantas não influenciam no desenvolvimento de microalgas no fitoplâncton e no perifíton, bem como na produtividade das cultivares de arroz irrigado 'IRGA 422 CL' e 'IRGA 417'.
653 $aAdubação
653 $aArroz irrigado
653 $aFertilizante
653 $aFitoplâncton
653 $aFitotoxicidade
653 $aPerifíton
700 1 $aMARCHESAN, E.
700 1 $aLUZ, D. S. da
700 1 $aCASSOL. A. P. V.
700 1 $aFIGUEIREDO, M. C. dos S.
700 1 $aOLIVEIRA, M. A.
700 1 $aSILVEIRA, M. V. E. da
700 1 $aFERREIRA, R. B.
773 $tCiência Rural, Santa Maria$gv. 41, n. 8., p. 1323-1330, ago. 2011.
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
09/10/2020 |
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Data da última atualização: |
09/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
GIUMBELLI, L. D.; LOSS, A.; VENTURA, B. S.; SANTOS JÚNIOR, E.; ALMEIDA, J.; PICCOLO, M. C.; MAFRA, Á. L.; KURTZ, C.; BRUNETTO, G.; COMIN, J. J. |
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Título: |
Aggregation index, carbon, nitrogen, and natural abundance of 13C and 15N in soil aggregates and bulk soil cultivated with onion under crop successions and rotations. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Soil Research, Clayton South, Australia, p. 1-14, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Use of soil cover crops of different families in crop rotation or succession under no-tillage system (NTS) for
onion production results in higher soil quality compared to land use systems with less plant diversity. The objective was
to evaluate the effect of using different combinations of plant species from different botanical families in rotation and
succession of soil cover crops in NTS for onion production on formation of macroaggregates, mesoaggregates, and
microaggregates, and on total organic C (TOC) and N (TN) contents, including isotopic forms of C and N, in soil
aggregates and bulk soil. The treatments (T) evaluated were maize/onion (NTS-T1); cover plants (winter)/onion (NTST2);
maize/winter grasses/onion (NTS-T3); velvet bean/onion (NTS-T4); millet/cover plants (winter)/onion (NTS-T5);
velvet bean/rye/onion (NTS-T6); maize/onion in conventional tillage system (CTS-T7); and intercrop cover plants
(summer)/onion (NTS-T8). We evaluated macroaggregates (8.0?0.25 mm), microaggregates (<0.25 mm), and bulk soil
(<2.0 mm) at depths of 0?5, 5?10, and 10?20 cm, in a nine-year field experiment. The greater plant diversity in T2?T6
and T8 resulted in higher geometric mean diameter (GMD) of aggregates compared to T1 and T7. The T8 was more
efficient in increasing GMD in the 10?20 cm soil depth than the other treatments. The T1 was more efficient in
improving the evaluated soil physical and chemical attributes than T7. The use of NTS with plants of the Poaceae and
Fabaceae families in single or intercrop systems for onion production resulted in higher TOC and TN contents in the 0?5
and 5?10 cm soil depths compared to CTS. Isotope 15N measurements showed that C and N were more protected in
microaggregates in all evaluated treatments and depths compared to macroaggregates and bulk soil. Macroaggregates
had more TOC and TN than microaggregates MenosUse of soil cover crops of different families in crop rotation or succession under no-tillage system (NTS) for
onion production results in higher soil quality compared to land use systems with less plant diversity. The objective was
to evaluate the effect of using different combinations of plant species from different botanical families in rotation and
succession of soil cover crops in NTS for onion production on formation of macroaggregates, mesoaggregates, and
microaggregates, and on total organic C (TOC) and N (TN) contents, including isotopic forms of C and N, in soil
aggregates and bulk soil. The treatments (T) evaluated were maize/onion (NTS-T1); cover plants (winter)/onion (NTST2);
maize/winter grasses/onion (NTS-T3); velvet bean/onion (NTS-T4); millet/cover plants (winter)/onion (NTS-T5);
velvet bean/rye/onion (NTS-T6); maize/onion in conventional tillage system (CTS-T7); and intercrop cover plants
(summer)/onion (NTS-T8). We evaluated macroaggregates (8.0?0.25 mm), microaggregates (<0.25 mm), and bulk soil
(<2.0 mm) at depths of 0?5, 5?10, and 10?20 cm, in a nine-year field experiment. The greater plant diversity in T2?T6
and T8 resulted in higher geometric mean diameter (GMD) of aggregates compared to T1 and T7. The T8 was more
efficient in increasing GMD in the 10?20 cm soil depth than the other treatments. The T1 was more efficient in
improving the evaluated soil physical and chemical attributes than T7. The use of NTS with plants of the Poaceae and
Fabaceae fam... Mostrar Tudo |
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Palavras-Chave: |
conventional tillage system; macroaggregates and microaggregates; natural abundance of 15N; no-tillage system; onion production; soil cover plants. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02847naa a2200301 a 4500
001 1130043
005 2020-10-09
008 2020 bl uuuu u00u1 u #d
100 1 $aGIUMBELLI, L. D.
245 $aAggregation index, carbon, nitrogen, and natural abundance of 13C and 15N in soil aggregates and bulk soil cultivated with onion under crop successions and rotations.$h[electronic resource]
260 $c2020
520 $aUse of soil cover crops of different families in crop rotation or succession under no-tillage system (NTS) for onion production results in higher soil quality compared to land use systems with less plant diversity. The objective was to evaluate the effect of using different combinations of plant species from different botanical families in rotation and succession of soil cover crops in NTS for onion production on formation of macroaggregates, mesoaggregates, and microaggregates, and on total organic C (TOC) and N (TN) contents, including isotopic forms of C and N, in soil aggregates and bulk soil. The treatments (T) evaluated were maize/onion (NTS-T1); cover plants (winter)/onion (NTST2); maize/winter grasses/onion (NTS-T3); velvet bean/onion (NTS-T4); millet/cover plants (winter)/onion (NTS-T5); velvet bean/rye/onion (NTS-T6); maize/onion in conventional tillage system (CTS-T7); and intercrop cover plants (summer)/onion (NTS-T8). We evaluated macroaggregates (8.0?0.25 mm), microaggregates (<0.25 mm), and bulk soil (<2.0 mm) at depths of 0?5, 5?10, and 10?20 cm, in a nine-year field experiment. The greater plant diversity in T2?T6 and T8 resulted in higher geometric mean diameter (GMD) of aggregates compared to T1 and T7. The T8 was more efficient in increasing GMD in the 10?20 cm soil depth than the other treatments. The T1 was more efficient in improving the evaluated soil physical and chemical attributes than T7. The use of NTS with plants of the Poaceae and Fabaceae families in single or intercrop systems for onion production resulted in higher TOC and TN contents in the 0?5 and 5?10 cm soil depths compared to CTS. Isotope 15N measurements showed that C and N were more protected in microaggregates in all evaluated treatments and depths compared to macroaggregates and bulk soil. Macroaggregates had more TOC and TN than microaggregates
653 $aconventional tillage system
653 $amacroaggregates and microaggregates
653 $anatural abundance of 15N
653 $ano-tillage system
653 $aonion production
653 $asoil cover plants
700 1 $aLOSS, A.
700 1 $aVENTURA, B. S.
700 1 $aSANTOS JÚNIOR, E.
700 1 $aALMEIDA, J.
700 1 $aPICCOLO, M. C.
700 1 $aMAFRA, Á. L.
700 1 $aKURTZ, C.
700 1 $aBRUNETTO, G.
700 1 $aCOMIN, J. J.
773 $tSoil Research, Clayton South, Australia, p. 1-14, 2020.
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