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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
21/05/2002 |
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Data da última atualização: |
10/02/2015 |
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Autoria: |
NEVES, E. J. M.; MARTINS, E. G.; REISSMANN, C. B. |
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Afiliação: |
Neves, Martins, pesquisadores da Embrapa Florestas; Reismann, professor do Departamento de Solos da UFPR. |
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Título: |
Deposição de serapilheira e de nutrientes de duas espécies da Amazônia. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Boletim de Pesquisa Florestal, Colombo, n. 43, p. 47-60, jul./dez. 2001. |
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ISSN: |
1571-6371 |
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Idioma: |
Português |
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Conteúdo: |
A capacidade da Floresta Amazônica em desenvolver-se sobre solos com baixa disponibilidade de nutrientes e com grande produção de biomassa deve-se à eficiente deposição e rápida liberação dos elementos minerais mediante a decomposição da serapilheira e reabsorção através de raízes superficiais. Considerando a necessidade de obter-se conhecimentos sobre a ciclagem de nutrientes de espécies da Amazônia, plantadas em ecossistema de terra firme, no presente trabalho, avaliou-se, entre as idades de 43 e 55 meses, a deposição de serapilheira, a concentração, o conteúdo e as variações mensais de N, P, K, Ca, Mg e S de Ceiba pentandra e de Virola surinamensis, plantadas em solo classificado como Latossolo Amarelo. Para tanto, coletores de 2,40 m de largura por 3,00 m de comprimento foram instalados no centro de cada parcela das espécies estudadas. Os resultados permitiram as seguintes conclusões: 1) No período de 12 meses, Ceiba pentandra depositou o dobro de serapilheira quando comparada à Virola surinamensis. 2) A concentração e o conteúdo de N, P, K, Ca, Mg e S foram maiores na serapilheira de Ceiba do que na de Virola. 3) As maiores deposições deste nutrientes na serapilheira dessas espécies ocorreram na estação seca, com exceção de Ca na serapilheira de Virola, o qual ocorreu na estação chuvosa. |
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Palavras-Chave: |
Ciclagem de nutrientes; Nutrient cycling. |
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Thesagro: |
Ceiba Pentandra; Virola Surinamensis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPF-2009-09/30232/1/neves.pdf
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Marc: |
LEADER 01956naa a2200205 a 4500
001 1305893
005 2015-02-10
008 2001 bl uuuu u00u1 u #d
022 $a1571-6371
100 1 $aNEVES, E. J. M.
245 $aDeposição de serapilheira e de nutrientes de duas espécies da Amazônia.
260 $c2001
520 $aA capacidade da Floresta Amazônica em desenvolver-se sobre solos com baixa disponibilidade de nutrientes e com grande produção de biomassa deve-se à eficiente deposição e rápida liberação dos elementos minerais mediante a decomposição da serapilheira e reabsorção através de raízes superficiais. Considerando a necessidade de obter-se conhecimentos sobre a ciclagem de nutrientes de espécies da Amazônia, plantadas em ecossistema de terra firme, no presente trabalho, avaliou-se, entre as idades de 43 e 55 meses, a deposição de serapilheira, a concentração, o conteúdo e as variações mensais de N, P, K, Ca, Mg e S de Ceiba pentandra e de Virola surinamensis, plantadas em solo classificado como Latossolo Amarelo. Para tanto, coletores de 2,40 m de largura por 3,00 m de comprimento foram instalados no centro de cada parcela das espécies estudadas. Os resultados permitiram as seguintes conclusões: 1) No período de 12 meses, Ceiba pentandra depositou o dobro de serapilheira quando comparada à Virola surinamensis. 2) A concentração e o conteúdo de N, P, K, Ca, Mg e S foram maiores na serapilheira de Ceiba do que na de Virola. 3) As maiores deposições deste nutrientes na serapilheira dessas espécies ocorreram na estação seca, com exceção de Ca na serapilheira de Virola, o qual ocorreu na estação chuvosa.
650 $aCeiba Pentandra
650 $aVirola Surinamensis
653 $aCiclagem de nutrientes
653 $aNutrient cycling
700 1 $aMARTINS, E. G.
700 1 $aREISSMANN, C. B.
773 $tBoletim de Pesquisa Florestal, Colombo$gn. 43, p. 47-60, jul./dez. 2001.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
07/04/2004 |
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Data da última atualização: |
17/01/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, L. J.; HOFFMANN-CAMPO, C. B. |
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Título: |
Sources of soybean resistance to Sternechus subsignatus. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
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Páginas: |
p. 292. |
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Série: |
(Embrapa Soja. Documentos, 228). |
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Idioma: |
Inglês |
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Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
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Conteúdo: |
The gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-95-1159 were less damaged than others, but only PI 227687 was significantly different (F=4,42; P<0,001) compared to the control ('Embrapa 4'). In 2001/02, the total damage (feeding marks + leaf cut + oviposition + dead plant) was lower in 'IAC-100', PI 171451, PI 227687 and 'IAC-24' than in 'BR-16'. In the 2002/03 season, greenhouse multiple-choice test, the most resistant genotypes were PI227687, BRQ 96-3065, KI-S 601 and Ocepar 17. In the field, during this season, PI227687, BRQ 96-3065 and CS 201 performed better in the presence of S. subsignatus. The results suggest that non-preference is one of the resistance mechanisms of soybean to S. subsignatus. Futhermore PI 227687 appears to be a source of potential resistance to be used by breeders in insect resistance programs. Other genotypes such as BRQ 95-3065 and PI 171451 also showed some potential, but to confirm this more studies are necessary. MenosThe gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-... Mostrar Tudo |
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Thesagro: |
Soja. |
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Thesaurus NAL: |
Soybeans. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190835/1/ID-23765.pdf
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Marc: |
LEADER 03285nam a2200181 a 4500
001 1466837
005 2019-01-17
008 2004 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. J.
245 $aSources of soybean resistance to Sternechus subsignatus.$h[electronic resource]
260 $aIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean$c2004
300 $ap. 292.
490 $a(Embrapa Soja. Documentos, 228).
500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
520 $aThe gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-95-1159 were less damaged than others, but only PI 227687 was significantly different (F=4,42; P<0,001) compared to the control ('Embrapa 4'). In 2001/02, the total damage (feeding marks + leaf cut + oviposition + dead plant) was lower in 'IAC-100', PI 171451, PI 227687 and 'IAC-24' than in 'BR-16'. In the 2002/03 season, greenhouse multiple-choice test, the most resistant genotypes were PI227687, BRQ 96-3065, KI-S 601 and Ocepar 17. In the field, during this season, PI227687, BRQ 96-3065 and CS 201 performed better in the presence of S. subsignatus. The results suggest that non-preference is one of the resistance mechanisms of soybean to S. subsignatus. Futhermore PI 227687 appears to be a source of potential resistance to be used by breeders in insect resistance programs. Other genotypes such as BRQ 95-3065 and PI 171451 also showed some potential, but to confirm this more studies are necessary.
650 $aSoybeans
650 $aSoja
700 1 $aHOFFMANN-CAMPO, C. B.
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Registro original: |
Embrapa Soja (CNPSO) |
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