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| Registros recuperados : 4 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
09/01/2015 |
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Data da última atualização: |
09/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SLAZAK, A.; FREESE, D.; MATOS, E. da S.; NII-ANNANG, N.; HÜTTL, R. F. |
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Afiliação: |
Anna Slazak, Chair of Soil Protection and Recultivation, Brandenburg University of Technology, Cottbus, Germany; Dirk Freese, Chair of Soil Protection and Recultivation, Brandenburg University of Technology, Cottbus, Germany; EDUARDO DA SILVA MATOS, CPAMT; Seth Nii-Annang, Chair of Soil Protection and Recultivation, Brandenburg University of Technology, Cottbus, Germany; Reinhard F. Hüttl, Helmholtz-Centre Potsdam - GFZ, German Research Centre for Geosciences, Telegrafenberg, Germany. |
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Título: |
Phosphorus pools in soil after land conversion from silvopasture to arable and grassland use |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Plant Nutrition and Soil Science, v. 1777, n. 2, p. 159-167, 2014 |
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ISSN: |
1436-8730 |
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DOI: |
dx.doi.org/10.1002/jpln.201200334 |
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Idioma: |
Português |
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Conteúdo: |
Differences in soil P among silvopasture, grassland, and arable lands have been well established. Nevertheless, most of the reports compare soil properties under long-term sites. Thus, there exists little information on the effect of the conversion of silvopasture to arable or grassland use on soil P pools. The objective of the study was to determine the impact of converting silvopasture system (SP) into arable cropping and grassland system on the distribution of P pools and potential P bioavailability. We compared the following systems: SP system, SP converted to arable cropland (SP-AL), SP converted to grassland (SP-GL), and for comparative purposes, a long-term arable cropland (AL). The P fractionation was performed by a sequential extraction scheme, using acid and alkaline extractants on samples collected from the 0?10 and 10?20 cm soil layers. It was assumed that the large variations in soil-P fractionations are caused by the different management practices associated with land conversion. The results of P fractionation showed a dominance of calcium-bound P, HCl-extractable Pi constituted up to 36% of the soil total P (TP). However, the type of land use did not affect this P fraction. On the other hand, the reduction in labile-Pi and NaOH-Pi fractions observed at the SP-AL site may have led to the decline in readily available P. The soil total organic P (TPo) content was 8% and 17% lower at SP-AL compared to SP and SP-GL site, respectively. Labile organic-P (labile-Po) content was markedly higher at SP site compared to arable soils, and was ≈ 10% of TPo. The NaOH-Po constituted the highest fraction of the organic-P pool (55%?79% of TPo) across all the study systems, and was positively correlated with TPo (p < 0.01). The study indicates that conversion of SP system in temperate regions to arable cropping with conventional tillage seems to result in the reduction of P availability compared to SP, indicating SP as an important land-use practice. MenosDifferences in soil P among silvopasture, grassland, and arable lands have been well established. Nevertheless, most of the reports compare soil properties under long-term sites. Thus, there exists little information on the effect of the conversion of silvopasture to arable or grassland use on soil P pools. The objective of the study was to determine the impact of converting silvopasture system (SP) into arable cropping and grassland system on the distribution of P pools and potential P bioavailability. We compared the following systems: SP system, SP converted to arable cropland (SP-AL), SP converted to grassland (SP-GL), and for comparative purposes, a long-term arable cropland (AL). The P fractionation was performed by a sequential extraction scheme, using acid and alkaline extractants on samples collected from the 0?10 and 10?20 cm soil layers. It was assumed that the large variations in soil-P fractionations are caused by the different management practices associated with land conversion. The results of P fractionation showed a dominance of calcium-bound P, HCl-extractable Pi constituted up to 36% of the soil total P (TP). However, the type of land use did not affect this P fraction. On the other hand, the reduction in labile-Pi and NaOH-Pi fractions observed at the SP-AL site may have led to the decline in readily available P. The soil total organic P (TPo) content was 8% and 17% lower at SP-AL compared to SP and SP-GL site, respectively. Labile organic-P (labile... Mostrar Tudo |
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Palavras-Chave: |
Sistema Silvipastoril. |
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Thesagro: |
Uso da Terra. |
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Thesaurus NAL: |
Agricultural soils; Silvopastoral systems; Zoning. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/115211/1/cpamt-2014-matos-phosphorus-silvopasture.pdf
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Marc: |
LEADER 02770naa a2200253 a 4500
001 2004999
005 2015-01-09
008 2014 bl uuuu u00u1 u #d
022 $a1436-8730
024 7 $adx.doi.org/10.1002/jpln.201200334$2DOI
100 1 $aSLAZAK, A.
245 $aPhosphorus pools in soil after land conversion from silvopasture to arable and grassland use$h[electronic resource]
260 $c2014
520 $aDifferences in soil P among silvopasture, grassland, and arable lands have been well established. Nevertheless, most of the reports compare soil properties under long-term sites. Thus, there exists little information on the effect of the conversion of silvopasture to arable or grassland use on soil P pools. The objective of the study was to determine the impact of converting silvopasture system (SP) into arable cropping and grassland system on the distribution of P pools and potential P bioavailability. We compared the following systems: SP system, SP converted to arable cropland (SP-AL), SP converted to grassland (SP-GL), and for comparative purposes, a long-term arable cropland (AL). The P fractionation was performed by a sequential extraction scheme, using acid and alkaline extractants on samples collected from the 0?10 and 10?20 cm soil layers. It was assumed that the large variations in soil-P fractionations are caused by the different management practices associated with land conversion. The results of P fractionation showed a dominance of calcium-bound P, HCl-extractable Pi constituted up to 36% of the soil total P (TP). However, the type of land use did not affect this P fraction. On the other hand, the reduction in labile-Pi and NaOH-Pi fractions observed at the SP-AL site may have led to the decline in readily available P. The soil total organic P (TPo) content was 8% and 17% lower at SP-AL compared to SP and SP-GL site, respectively. Labile organic-P (labile-Po) content was markedly higher at SP site compared to arable soils, and was ≈ 10% of TPo. The NaOH-Po constituted the highest fraction of the organic-P pool (55%?79% of TPo) across all the study systems, and was positively correlated with TPo (p < 0.01). The study indicates that conversion of SP system in temperate regions to arable cropping with conventional tillage seems to result in the reduction of P availability compared to SP, indicating SP as an important land-use practice.
650 $aAgricultural soils
650 $aSilvopastoral systems
650 $aZoning
650 $aUso da Terra
653 $aSistema Silvipastoril
700 1 $aFREESE, D.
700 1 $aMATOS, E. da S.
700 1 $aNII-ANNANG, N.
700 1 $aHÜTTL, R. F.
773 $tJournal of Plant Nutrition and Soil Science$gv. 1777, n. 2, p. 159-167, 2014
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Embrapa Agrossilvipastoril (CPAMT) |
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