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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
11/01/2022 |
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Data da última atualização: |
01/02/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SITTA NETO, E.; DAL MOLIN, S. J.; SITTA, C.; BOLDRIN, P. F.; BENITES, V. de M. |
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Afiliação: |
ERNESTO SITTA NETO, UNIRV; SULIAN JUNKES DAL MOLIN, SLC AGRÍCOLA; CASSIO SITTA, UNIRV; PAULO FERNANDES BOLDRIN, UNIRV; VINICIUS DE MELO BENITES, CNPS. |
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Título: |
Bioavailability of phosphorus on highly weathered Oxisoils of the Brazilian Mid-West. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
International Journal of Agriculture, Environment and Bioresearch, v. 6, n. 5, p. 35-54, Oct. 2021. |
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DOI: |
https://doi.org/10.35410/IJAEB.2021.5664 |
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Idioma: |
Inglês |
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Conteúdo: |
Soils from mid-west Brazil show strong phosphorus (P) fixation, which can reduce the efficiency of P fertilizers. Under this condition, soil competes with the plant for the applied P adsorbing it strongly in its mineral fraction. Nevertheless, in areas where crops are grown and fertilizers are added for many years, soil fertility status has increased over time, making these soils nonresponsive to P. The objective of this study was to evaluate how P availability changes with soil use. Forty soil samples were collected under different types of land use: native forest, pasture, no-tillage, and areas with periodic tillage. P fractionation was performed to determine the amount of P in the organic and inorganic fractions with high, medium, and low lability under each land use. Corn was cultivated in a greenhouse experiment to evaluate P uptake and values correlated with different P fractions. The results showed differences in the P fraction relations among different land uses. Cultivated areas (no tillage and periodic tillage) accumulated greater amounts of P in all fractions than pastures and the native forest. A higher proportion of labile organic P was observed under no tillage than under periodic tillage. NaHCO3 and NaOH 0.1 mol L-1were the most relevant P fractions for shoot P uptake. No tillage promoted the accumulation of available P fractions, suggesting that it is a good management strategy to ensure fertilizer use efficiency |
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Thesagro: |
Fósforo; Oxisol; Plantio Direto; Uso da Terra. |
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Thesaurus Nal: |
Land use; No-tillage; Phosphorus. |
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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/230168/1/Bioavailability-of-phosphorus-on-highly-weathered-Oxisoils-2021.pdf
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Marc: |
LEADER 02257naa a2200265 a 4500
001 2139009
005 2022-02-01
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.35410/IJAEB.2021.5664$2DOI
100 1 $aSITTA NETO, E.
245 $aBioavailability of phosphorus on highly weathered Oxisoils of the Brazilian Mid-West.$h[electronic resource]
260 $c2021
520 $aSoils from mid-west Brazil show strong phosphorus (P) fixation, which can reduce the efficiency of P fertilizers. Under this condition, soil competes with the plant for the applied P adsorbing it strongly in its mineral fraction. Nevertheless, in areas where crops are grown and fertilizers are added for many years, soil fertility status has increased over time, making these soils nonresponsive to P. The objective of this study was to evaluate how P availability changes with soil use. Forty soil samples were collected under different types of land use: native forest, pasture, no-tillage, and areas with periodic tillage. P fractionation was performed to determine the amount of P in the organic and inorganic fractions with high, medium, and low lability under each land use. Corn was cultivated in a greenhouse experiment to evaluate P uptake and values correlated with different P fractions. The results showed differences in the P fraction relations among different land uses. Cultivated areas (no tillage and periodic tillage) accumulated greater amounts of P in all fractions than pastures and the native forest. A higher proportion of labile organic P was observed under no tillage than under periodic tillage. NaHCO3 and NaOH 0.1 mol L-1were the most relevant P fractions for shoot P uptake. No tillage promoted the accumulation of available P fractions, suggesting that it is a good management strategy to ensure fertilizer use efficiency
650 $aLand use
650 $aNo-tillage
650 $aPhosphorus
650 $aFósforo
650 $aOxisol
650 $aPlantio Direto
650 $aUso da Terra
700 1 $aDAL MOLIN, S. J.
700 1 $aSITTA, C.
700 1 $aBOLDRIN, P. F.
700 1 $aBENITES, V. de M.
773 $tInternational Journal of Agriculture, Environment and Bioresearch$gv. 6, n. 5, p. 35-54, Oct. 2021.
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Embrapa Solos (CNPS) |
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| 18. |  | WAQUIL, J. M. Manejo integrado de pragas: revisão histórica e perspectivas. In: CONGRESSO NACIONAL DE MILHO E SORGO, 24., 2002, Florianópolis, SC. Meio ambiente e a nova agenda para o agronegócio de milho e sorgo: [resumos expandidos]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Florianópolis: Epagri, 2002.| Tipo: Artigo em Anais de Congresso |
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| 20. | | WAQUIL, J. M. Manejo de resistência em insetos-praga. In: PIRES, C. S. S.; FONTES, E. M. G.; SUJII, E. R. (Ed.). Impacto ecológico de plantas geneticamente modificadas: o algodão resistente a insetos como estudo de caso. Brasília: Embrapa Recursos Genéticos e Biotecnologia: CNPq, 2003. p. 135-161.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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