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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/02/2021 |
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Data da última atualização: |
19/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, M. da S.; GIONGO, V.; SILVA, V. C. da; SILVA, V. C. da; SALVIANO, A. M.; ANDRADE, E. M. de. |
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Afiliação: |
MONICA DA SILVA SANTANA; VANDERLISE GIONGO, CPATSA; Vanessa Coelho da Silva; Vanderson Coelho da Silva; ALESSANDRA MONTEIRO SALVIANO, CPATSA; Eunice Maia de Andrade. |
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Título: |
Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Revista Agro@mbiente On-line, v. 14, 2020. |
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DOI: |
http://dx.doi.org/10.18227/1982-8470ragro.v14i0.6319 |
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Idioma: |
Português |
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Conteúdo: |
The availability of potassium (K), calcium (Ca) and magnesium (Mg) in the soil affects the nutrition and productivity of the plant cover. The Ca:Mg, Ca:K and Mg:K stoichiometric ratios indicate the nutrient load balance in the soil. However, limited attention has been paid to providing a scientific basis for how changes in land use, especially the cultivation of forage, impacts the availability and reserves of base cations in semi-arid regions, since, in these environments, fertiliser is not used. Therefore, the aim of this study was to quantify the concentrations of soil K, Ca and Mg in areas of preserved Caatinga (PC), and areas where buffel grass (BG) has been cultivated for 40 years and Leucaena grass (LE) for 11 years. Four 100 x 100 cm trenches were opened in each type of plant cover and collections were made in the 0-5, 5-10, 10-15 and 15-20 cm layers. The concentrations of K, Ca and Mg and their ratios were determined and compared using the Mann-Whitney test. The soil under buffel grass showed higher concentrations of K and Mg, and a lower concentration of Ca. Compared to PC, LE presented a lower Ca content in the 0-5 cm layer only. BG had the lowest values for the Ca:Mg and Ca:K stoichiometric ratios due to depletion of the Ca. Despite being soluble and easily leached, K remained in the soil under each type of cover, favoured by the semi-arid climate. Soil Ca, which is exported due to grazing of the produced biomass, should be replaced so as not to compromise the support capacity of seasonally dry tropical environments through the cultivation of forages. MenosThe availability of potassium (K), calcium (Ca) and magnesium (Mg) in the soil affects the nutrition and productivity of the plant cover. The Ca:Mg, Ca:K and Mg:K stoichiometric ratios indicate the nutrient load balance in the soil. However, limited attention has been paid to providing a scientific basis for how changes in land use, especially the cultivation of forage, impacts the availability and reserves of base cations in semi-arid regions, since, in these environments, fertiliser is not used. Therefore, the aim of this study was to quantify the concentrations of soil K, Ca and Mg in areas of preserved Caatinga (PC), and areas where buffel grass (BG) has been cultivated for 40 years and Leucaena grass (LE) for 11 years. Four 100 x 100 cm trenches were opened in each type of plant cover and collections were made in the 0-5, 5-10, 10-15 and 15-20 cm layers. The concentrations of K, Ca and Mg and their ratios were determined and compared using the Mann-Whitney test. The soil under buffel grass showed higher concentrations of K and Mg, and a lower concentration of Ca. Compared to PC, LE presented a lower Ca content in the 0-5 cm layer only. BG had the lowest values for the Ca:Mg and Ca:K stoichiometric ratios due to depletion of the Ca. Despite being soluble and easily leached, K remained in the soil under each type of cover, favoured by the semi-arid climate. Soil Ca, which is exported due to grazing of the produced biomass, should be replaced so as not to compromise the su... Mostrar Tudo |
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Palavras-Chave: |
Capacidade suporte; Pastejo da biomassa. |
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Thesagro: |
Caatinga; Fertilidade do Solo. |
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Thesaurus Nal: |
Calcium; Magnesium; Soil fertility. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221319/1/Stoichiometric-ratios-in-the-soil-of-native-and-forage-2020.pdf
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Marc: |
LEADER 02421naa a2200277 a 4500
001 2130133
005 2021-02-19
008 2020 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.18227/1982-8470ragro.v14i0.6319$2DOI
100 1 $aSILVA, M. da S.
245 $aStoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest.$h[electronic resource]
260 $c2020
520 $aThe availability of potassium (K), calcium (Ca) and magnesium (Mg) in the soil affects the nutrition and productivity of the plant cover. The Ca:Mg, Ca:K and Mg:K stoichiometric ratios indicate the nutrient load balance in the soil. However, limited attention has been paid to providing a scientific basis for how changes in land use, especially the cultivation of forage, impacts the availability and reserves of base cations in semi-arid regions, since, in these environments, fertiliser is not used. Therefore, the aim of this study was to quantify the concentrations of soil K, Ca and Mg in areas of preserved Caatinga (PC), and areas where buffel grass (BG) has been cultivated for 40 years and Leucaena grass (LE) for 11 years. Four 100 x 100 cm trenches were opened in each type of plant cover and collections were made in the 0-5, 5-10, 10-15 and 15-20 cm layers. The concentrations of K, Ca and Mg and their ratios were determined and compared using the Mann-Whitney test. The soil under buffel grass showed higher concentrations of K and Mg, and a lower concentration of Ca. Compared to PC, LE presented a lower Ca content in the 0-5 cm layer only. BG had the lowest values for the Ca:Mg and Ca:K stoichiometric ratios due to depletion of the Ca. Despite being soluble and easily leached, K remained in the soil under each type of cover, favoured by the semi-arid climate. Soil Ca, which is exported due to grazing of the produced biomass, should be replaced so as not to compromise the support capacity of seasonally dry tropical environments through the cultivation of forages.
650 $aCalcium
650 $aMagnesium
650 $aSoil fertility
650 $aCaatinga
650 $aFertilidade do Solo
653 $aCapacidade suporte
653 $aPastejo da biomassa
700 1 $aGIONGO, V.
700 1 $aSILVA, V. C. da
700 1 $aSILVA, V. C. da
700 1 $aSALVIANO, A. M.
700 1 $aANDRADE, E. M. de
773 $tRevista Agro@mbiente On-line$gv. 14, 2020.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
19/06/1997 |
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Data da última atualização: |
19/06/1997 |
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Autoria: |
MIELE, A.; KUHN, G. B.; TONIETTO, J.; VOLKWESS, S. J. |
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Afiliação: |
CNPUV. |
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Título: |
Efeito do virus-do-enrolamento-da-folha na composicao mineral do peciolo e do limbo da videora 'Cabernet Franc'. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.22, v.11/12, p.1151-1155, nov/dez.1987. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi determinar o efeito do virus-do-enrolamento-da-folha na composicao mineral do peciolo e do limbo da folha de Vitis vinifera L.cv.Cabernet Franc. O experimento foi realizado em Bento Goncalves, RS, durante o ciclo vegetativo de 1979/80. As videiras, conduzidas em latada e com oito anos, eram enxertadas sobre porta-enxerto V. riparia x V.rupestris 101-14 Mgt. O delineamento experimental adotado foi o inteiramente casualizado, com tres tratamentos e cinco repeticoes. Os tratamentos testados fora: a. plantas sadias; b. plantas com sintomas medios; c. plantas com sintomas fortes. As folhas fora coletadas no estadio de plena floracao. Os resultados mostram quee plantas com fortes sintomas deste virus apresentaram peciolos com teores mais baixos em N total P, Ca, Mg, Mn, Cu, Fe e Zn, quando comparadas com plantas sadias, enquanto que o N-NO3, teve uma tendencia a diminuir. Entretanto, os teores de K aumentaram. Os resultados referentes ao limbo sao, de maneira geral, similares aos encontrados no peciolo. |
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Palavras-Chave: |
Analise do peciolo; Leaf analysis; Petiole analysis; Virose; Virus disease. |
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Thesagro: |
Análise Foliar; Estado Nutricional. |
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Thesaurus NAL: |
nutritional status; Vitis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01823naa a2200265 a 4500
001 1089538
005 1997-06-19
008 1987 bl uuuu u00u1 u #d
100 1 $aMIELE, A.
245 $aEfeito do virus-do-enrolamento-da-folha na composicao mineral do peciolo e do limbo da videora 'Cabernet Franc'.
260 $c1987
520 $aO objetivo deste trabalho foi determinar o efeito do virus-do-enrolamento-da-folha na composicao mineral do peciolo e do limbo da folha de Vitis vinifera L.cv.Cabernet Franc. O experimento foi realizado em Bento Goncalves, RS, durante o ciclo vegetativo de 1979/80. As videiras, conduzidas em latada e com oito anos, eram enxertadas sobre porta-enxerto V. riparia x V.rupestris 101-14 Mgt. O delineamento experimental adotado foi o inteiramente casualizado, com tres tratamentos e cinco repeticoes. Os tratamentos testados fora: a. plantas sadias; b. plantas com sintomas medios; c. plantas com sintomas fortes. As folhas fora coletadas no estadio de plena floracao. Os resultados mostram quee plantas com fortes sintomas deste virus apresentaram peciolos com teores mais baixos em N total P, Ca, Mg, Mn, Cu, Fe e Zn, quando comparadas com plantas sadias, enquanto que o N-NO3, teve uma tendencia a diminuir. Entretanto, os teores de K aumentaram. Os resultados referentes ao limbo sao, de maneira geral, similares aos encontrados no peciolo.
650 $anutritional status
650 $aVitis
650 $aAnálise Foliar
650 $aEstado Nutricional
653 $aAnalise do peciolo
653 $aLeaf analysis
653 $aPetiole analysis
653 $aVirose
653 $aVirus disease
700 1 $aKUHN, G. B.
700 1 $aTONIETTO, J.
700 1 $aVOLKWESS, S. J.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.22, v.11/12, p.1151-1155, nov/dez.1987.
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