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| Registros recuperados : 342 | |
| Registros recuperados : 342 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
04/12/2023 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
COELHO, A. M.; RESENDE, A. V. de. |
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Afiliação: |
ANTONIO MARCOS COELHO, CNPMS; ALVARO VILELA DE RESENDE, CNPMS. |
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Título: |
Agronomic efficiency of rock phosphates used alone or associated with soluble source of phosphorus for corn and common bean crops cultivated in succession under no-tillage and irrigated system. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Agricultural Sciences Research, v. 3, n. 18, p. 1-19, 2023. |
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DOI: |
http://doi.org/10.22533/at.ed.9733182309111 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical soils present a high adsorption capacity in the dynamics of the applied P, thus reducing their initial efficiency of use by the plants. Within this approach, sources of P with lower solubility, such as natural rock phosphates with different degrees of reactivity (slow release), could be an alternative for fertilization of these soils, in relation to soluble phosphates. In order to evaluate this possibility, experiments with maize and bean crops were conducted in Sete Lagoas-MG, in a “Latossolo Vermelho” (Oxisol) clayey texture. The experimental design was in a randomized block design, with four replications, with the treatments arranged in subplots, with phosphorus sources in the plots, and in the subplots the doses of P applied annually. The treatments consisted of phosphorus sources: Phosphorite (18 % P2 O5 total), Bayóvar (29 % P2 O5 total) and Triple Superphosphate (45 % P2 O5 total), broadcast applied and incorporated in soil 0-10 cm depth, at a dose of 200 kg of P2 O5 ha-1, calculated on basis of total P2 O5 content of the sources. A control treatment, without applying phosphate fertilization was included. As maintenance fertilization, for each source and control treatment, doses of 0, 50 and 100 kg of P2 O5 ha-1, applied annually in the furrow at sowing time of corn, in the form of Triple Superphosphate. The corn was sowing in the spring/summer in six successive crops in the period 2012 to 2018. The bean was sowing in the autumn/winter, in four successive crops, in the period of 2013 to 2016. The initial application of a high dose of P as a corrective fertilizer, using sources varying in reactivity, was ineffective in terms of increasing the productivity of corn and beans, both for immediate and residual effect, when compared to the annual application of doses of P as maintenance fertilizer. The highest grain yields obtained with the annual application of 100 kg of P2 O5 ha-1 as Triple Superphosphate. MenosTropical soils present a high adsorption capacity in the dynamics of the applied P, thus reducing their initial efficiency of use by the plants. Within this approach, sources of P with lower solubility, such as natural rock phosphates with different degrees of reactivity (slow release), could be an alternative for fertilization of these soils, in relation to soluble phosphates. In order to evaluate this possibility, experiments with maize and bean crops were conducted in Sete Lagoas-MG, in a “Latossolo Vermelho” (Oxisol) clayey texture. The experimental design was in a randomized block design, with four replications, with the treatments arranged in subplots, with phosphorus sources in the plots, and in the subplots the doses of P applied annually. The treatments consisted of phosphorus sources: Phosphorite (18 % P2 O5 total), Bayóvar (29 % P2 O5 total) and Triple Superphosphate (45 % P2 O5 total), broadcast applied and incorporated in soil 0-10 cm depth, at a dose of 200 kg of P2 O5 ha-1, calculated on basis of total P2 O5 content of the sources. A control treatment, without applying phosphate fertilization was included. As maintenance fertilization, for each source and control treatment, doses of 0, 50 and 100 kg of P2 O5 ha-1, applied annually in the furrow at sowing time of corn, in the form of Triple Superphosphate. The corn was sowing in the spring/summer in six successive crops in the period 2012 to 2018. The bean was sowing in the autumn/winter, in four successive cro... Mostrar Tudo |
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Thesagro: |
Feijão; Fosfato; Fósforo; Milho; Plantio Direto. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159066/1/Agronomic-efficiency-of-rock-phosphates-used-alone-or-associated-with-soluble-source-of-phosphorus.pdf
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Marc: |
LEADER 02690naa a2200205 a 4500
001 2159066
005 2023-12-04
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.22533/at.ed.9733182309111$2DOI
100 1 $aCOELHO, A. M.
245 $aAgronomic efficiency of rock phosphates used alone or associated with soluble source of phosphorus for corn and common bean crops cultivated in succession under no-tillage and irrigated system.$h[electronic resource]
260 $c2023
520 $aTropical soils present a high adsorption capacity in the dynamics of the applied P, thus reducing their initial efficiency of use by the plants. Within this approach, sources of P with lower solubility, such as natural rock phosphates with different degrees of reactivity (slow release), could be an alternative for fertilization of these soils, in relation to soluble phosphates. In order to evaluate this possibility, experiments with maize and bean crops were conducted in Sete Lagoas-MG, in a “Latossolo Vermelho” (Oxisol) clayey texture. The experimental design was in a randomized block design, with four replications, with the treatments arranged in subplots, with phosphorus sources in the plots, and in the subplots the doses of P applied annually. The treatments consisted of phosphorus sources: Phosphorite (18 % P2 O5 total), Bayóvar (29 % P2 O5 total) and Triple Superphosphate (45 % P2 O5 total), broadcast applied and incorporated in soil 0-10 cm depth, at a dose of 200 kg of P2 O5 ha-1, calculated on basis of total P2 O5 content of the sources. A control treatment, without applying phosphate fertilization was included. As maintenance fertilization, for each source and control treatment, doses of 0, 50 and 100 kg of P2 O5 ha-1, applied annually in the furrow at sowing time of corn, in the form of Triple Superphosphate. The corn was sowing in the spring/summer in six successive crops in the period 2012 to 2018. The bean was sowing in the autumn/winter, in four successive crops, in the period of 2013 to 2016. The initial application of a high dose of P as a corrective fertilizer, using sources varying in reactivity, was ineffective in terms of increasing the productivity of corn and beans, both for immediate and residual effect, when compared to the annual application of doses of P as maintenance fertilizer. The highest grain yields obtained with the annual application of 100 kg of P2 O5 ha-1 as Triple Superphosphate.
650 $aFeijão
650 $aFosfato
650 $aFósforo
650 $aMilho
650 $aPlantio Direto
700 1 $aRESENDE, A. V. de
773 $tJournal of Agricultural Sciences Research$gv. 3, n. 18, p. 1-19, 2023.
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Embrapa Milho e Sorgo (CNPMS) |
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