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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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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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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
09/02/2023 |
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Data da última atualização: |
15/07/2023 |
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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: |
MARQUES, D. M.; MAGALHAES, P. C.; MARRIEL, I. E.; GOMES JÚNIOR, C. C.; SILVA, A. B. da; SILVA, N. T. A. da; SOUZA, T. C. de. |
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Afiliação: |
DANIELE MARIA MARQUES, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; IVANILDO EVODIO MARRIEL, CNPMS; CARLOS CÉSAR GOMES JÚNIOR, Universidade Federal de Alfenas; ADRIANO BORTOLOTTI DA SILVA, Universidade José Do Rosário Vellano; NAIA THAÍS ALVES DA SILVA, Universidade Federal de São João del-Rei; THIAGO CORRÊA DE SOUZA, Universidade Federal de Alfenas. |
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Título: |
Azospirillum brasilense reduces the efects of water stress and increases maize yield in irrigated areas with high soil nitrogen doses. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 42, p. 4263-4274, 2023. |
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DOI: |
https://doi.org/10.1007/s00344-022-10889-7 |
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Idioma: |
Inglês |
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Conteúdo: |
The hypothesis of this research was to verify the feasibility of using rhizobacteria in maize production, aiming to reduce the effect of water stress and the use of nitrogen fertilizers. Therefore, the objective of this study was to evaluate the morphophysiological responses and yield of maize plants inoculated with A. brasilense cultivated under two water conditions and with two nitrogen fertilization situations. The experiment was carried out in a field under irrigated conditions (IR) and water stress (WS) using a randomized block design with split plots. The treatments consisted of two concentrations of nitrogen (N) applied to the soil (20 and 120 kg ha?1) and three inoculation levels of A. brasilense (Az1, Az2, and control), with four replications. Stomatal conductance, chlorophyll content, leaf area, yield, harvest index, and soil enzymes (arginase and urease) were evaluated. Inoculation with Az1 and Az2 resulted in an increase in chlorophyll content, regardless of N content in the soil and water conditions. With Az2, there was a 10% increase in grain yield regardless of water condition and soil N content. Inoculation with Az2 level of A. brasilense and 120 kg ha?1 of N under IR was the best treatment that resulted in the highest maize yield, around 10%. Under water deficit conditions, plant inoculation with A. brasilense may reduce the effects of environmental stress by approximately 11%; however, the inoculation was not enough to equalize the maize yields to those observed in irrigated areas with the inoculant Az1 and 120 kg ha?1 of N, which promoted the best results. The inoculation of plants with A. brasilense is a cheap and easy-to-use technology that should be considered for the sustainability of maize production. MenosThe hypothesis of this research was to verify the feasibility of using rhizobacteria in maize production, aiming to reduce the effect of water stress and the use of nitrogen fertilizers. Therefore, the objective of this study was to evaluate the morphophysiological responses and yield of maize plants inoculated with A. brasilense cultivated under two water conditions and with two nitrogen fertilization situations. The experiment was carried out in a field under irrigated conditions (IR) and water stress (WS) using a randomized block design with split plots. The treatments consisted of two concentrations of nitrogen (N) applied to the soil (20 and 120 kg ha?1) and three inoculation levels of A. brasilense (Az1, Az2, and control), with four replications. Stomatal conductance, chlorophyll content, leaf area, yield, harvest index, and soil enzymes (arginase and urease) were evaluated. Inoculation with Az1 and Az2 resulted in an increase in chlorophyll content, regardless of N content in the soil and water conditions. With Az2, there was a 10% increase in grain yield regardless of water condition and soil N content. Inoculation with Az2 level of A. brasilense and 120 kg ha?1 of N under IR was the best treatment that resulted in the highest maize yield, around 10%. Under water deficit conditions, plant inoculation with A. brasilense may reduce the effects of environmental stress by approximately 11%; however, the inoculation was not enough to equalize the maize yields to those obs... Mostrar Tudo |
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Palavras-Chave: |
Condições de campo; Estresse hídrico; Índice de colheita; Rizobactéria. |
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Thesagro: |
Clorofila; Irrigação; Milho; Nitrogênio; Seca; Solo; Zea Mays. |
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Thesaurus NAL: |
Drought; Water stress. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02823naa a2200361 a 4500
001 2151608
005 2023-07-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s00344-022-10889-7$2DOI
100 1 $aMARQUES, D. M.
245 $aAzospirillum brasilense reduces the efects of water stress and increases maize yield in irrigated areas with high soil nitrogen doses.$h[electronic resource]
260 $c2023
520 $aThe hypothesis of this research was to verify the feasibility of using rhizobacteria in maize production, aiming to reduce the effect of water stress and the use of nitrogen fertilizers. Therefore, the objective of this study was to evaluate the morphophysiological responses and yield of maize plants inoculated with A. brasilense cultivated under two water conditions and with two nitrogen fertilization situations. The experiment was carried out in a field under irrigated conditions (IR) and water stress (WS) using a randomized block design with split plots. The treatments consisted of two concentrations of nitrogen (N) applied to the soil (20 and 120 kg ha?1) and three inoculation levels of A. brasilense (Az1, Az2, and control), with four replications. Stomatal conductance, chlorophyll content, leaf area, yield, harvest index, and soil enzymes (arginase and urease) were evaluated. Inoculation with Az1 and Az2 resulted in an increase in chlorophyll content, regardless of N content in the soil and water conditions. With Az2, there was a 10% increase in grain yield regardless of water condition and soil N content. Inoculation with Az2 level of A. brasilense and 120 kg ha?1 of N under IR was the best treatment that resulted in the highest maize yield, around 10%. Under water deficit conditions, plant inoculation with A. brasilense may reduce the effects of environmental stress by approximately 11%; however, the inoculation was not enough to equalize the maize yields to those observed in irrigated areas with the inoculant Az1 and 120 kg ha?1 of N, which promoted the best results. The inoculation of plants with A. brasilense is a cheap and easy-to-use technology that should be considered for the sustainability of maize production.
650 $aDrought
650 $aWater stress
650 $aClorofila
650 $aIrrigação
650 $aMilho
650 $aNitrogênio
650 $aSeca
650 $aSolo
650 $aZea Mays
653 $aCondições de campo
653 $aEstresse hídrico
653 $aÍndice de colheita
653 $aRizobactéria
700 1 $aMAGALHAES, P. C.
700 1 $aMARRIEL, I. E.
700 1 $aGOMES JÚNIOR, C. C.
700 1 $aSILVA, A. B. da
700 1 $aSILVA, N. T. A. da
700 1 $aSOUZA, T. C. de
773 $tJournal of Plant Growth Regulation$gv. 42, p. 4263-4274, 2023.
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