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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
16/10/2002 |
Data da última atualização: |
16/10/2002 |
Autoria: |
LIMA, B. P.; NUNES FILHO, J.; SÁ, V. A. de L. |
Título: |
Manejo de solos irrigados com culturas olericolas no Submedio Sao Francisco. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 29., 2000, Fortaleza. Anais... Fortaleza: SBEA / UFC, 2000. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Compactação; Compaction; Densidade do solo; Infiltration; Productivity; submédio São Francisco. |
Thesagro: |
Hortaliça; Incorporação; Infiltração; Produtividade. |
Thesaurus Nal: |
soil density; vegetables. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00867naa a2200301 a 4500 001 1770388 005 2002-10-16 008 2000 bl uuuu u00u1 u #d 100 1 $aLIMA, B. P. 245 $aManejo de solos irrigados com culturas olericolas no Submedio Sao Francisco. 260 $c2000 300 $c1 CD-ROM. 650 $asoil density 650 $avegetables 650 $aHortaliça 650 $aIncorporação 650 $aInfiltração 650 $aProdutividade 653 $aBrasil 653 $aCompactação 653 $aCompaction 653 $aDensidade do solo 653 $aInfiltration 653 $aProductivity 653 $asubmédio São Francisco 700 1 $aNUNES FILHO, J. 700 1 $aSÁ, V. A. de L. 773 $tIn: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 29., 2000, Fortaleza. Anais... Fortaleza: SBEA / UFC, 2000.
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Embrapa Hortaliças (CNPH) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
20/12/2017 |
Data da última atualização: |
20/12/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
VARGAS, L. A.; PASSOS, A. M. A.; MARCILIO, V. A.; BRUGNERA, F. A.; LEITE, V. P. D.; COSTA, R. S. C. |
Afiliação: |
Lidiane A. Vargas, Universidade Federal de Rondônia; ALEXANDRE MARTINS ABDAO DOS PASSOS, CNPMS; Veronice A. Marcílio, FIMCA; Francis A. Brugnera, FIMCA; Vivianni P. D. Leite, Universidade Federal de Rondônia; ROGERIO SEBASTIAO CORREA DA COSTA, CPAF-Rondonia. |
Título: |
Soil seed bank phytosociology in no-tillage systems in the Southwestern Amazon Region. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
American Journal of Plant Sciences, v. 8, p. 3399-3413, 2017. |
DOI: |
10.4236/ajps.2017.813228 |
Idioma: |
Inglês |
Conteúdo: |
Understanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of the weeds? seed bank. MenosUnderstanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of t... Mostrar Tudo |
Palavras-Chave: |
Fitossociologia; Sorghum sudanense. |
Thesagro: |
Plantio direto. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169382/1/Soil-seed.pdf
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Marc: |
LEADER 02217naa a2200229 a 4500 001 2083035 005 2017-12-20 008 2017 bl uuuu u00u1 u #d 024 7 $a10.4236/ajps.2017.813228$2DOI 100 1 $aVARGAS, L. A. 245 $aSoil seed bank phytosociology in no-tillage systems in the Southwestern Amazon Region.$h[electronic resource] 260 $c2017 520 $aUnderstanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of the weeds? seed bank. 650 $aPlantio direto 653 $aFitossociologia 653 $aSorghum sudanense 700 1 $aPASSOS, A. M. A. 700 1 $aMARCILIO, V. A. 700 1 $aBRUGNERA, F. A. 700 1 $aLEITE, V. P. D. 700 1 $aCOSTA, R. S. C. 773 $tAmerican Journal of Plant Sciences$gv. 8, p. 3399-3413, 2017.
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Embrapa Milho e Sorgo (CNPMS) |
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