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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
16/07/1991 |
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Data da última atualização: |
27/01/2025 |
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Autoria: |
MCGONIGLE, T. P.; EVANS, D. G. |
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Título: |
Effect of degree of soil disturbance of mycorrhizal colonization and phosphorus absorption by maize in growth chamber and field experiments. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
New Phytologist, v. 116, n. 4, p. 629-636, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
Prior studies have established that phosphorus absorption by maize from undisturbed soil is greater than from soilwhich has been disturbed since the previous period of growth. Those experiments were conducted undercontrolled conditions and with only two disturbance treatments, namely disturbance of the soil by hand sufficientthat it will pass a 5 mm sieve, and no disturbance at all. We present here two experiments in which additionaltreatments of intermediate degrees of disturbance are included.In a growth chamber experiment, cutting the soil into 1, 2 or 4 cm cubes reduced the phosphorus absorptionand shoot dry matter, but the reduction was not as great as that after hand disturbance of the soil. In a fieldexperiment, the phosphorus absorption and shoot dry matter found in a conventional tillage and no-till treatmentswere less than in hand-planted no-till plots, but greater than with severe soil disturbance. In both experimentsincreases in shoot dry mass and shoot phosphorus concentration in the less disturbed treatments were notaccompanied by an increase in mycorrhizal colonization. This is inconsistent with earlier studies in whichcolonization was greater in undisturbed soil.Since it has now been demonstrated that increased colonization is not a necessary component in the processwhereby lack of disturbance results in improved plant performance, the role of mycorrhizas in this effect shouldbe reconsidered. If mycorrhizas are important in this respect then this can only be by means of changes in theexternal mycelium. However, without experimental confirmation this interpretation is speculative. MenosPrior studies have established that phosphorus absorption by maize from undisturbed soil is greater than from soilwhich has been disturbed since the previous period of growth. Those experiments were conducted undercontrolled conditions and with only two disturbance treatments, namely disturbance of the soil by hand sufficientthat it will pass a 5 mm sieve, and no disturbance at all. We present here two experiments in which additionaltreatments of intermediate degrees of disturbance are included.In a growth chamber experiment, cutting the soil into 1, 2 or 4 cm cubes reduced the phosphorus absorptionand shoot dry matter, but the reduction was not as great as that after hand disturbance of the soil. In a fieldexperiment, the phosphorus absorption and shoot dry matter found in a conventional tillage and no-till treatmentswere less than in hand-planted no-till plots, but greater than with severe soil disturbance. In both experimentsincreases in shoot dry mass and shoot phosphorus concentration in the less disturbed treatments were notaccompanied by an increase in mycorrhizal colonization. This is inconsistent with earlier studies in whichcolonization was greater in undisturbed soil.Since it has now been demonstrated that increased colonization is not a necessary component in the processwhereby lack of disturbance results in improved plant performance, the role of mycorrhizas in this effect shouldbe reconsidered. If mycorrhizas are important in this respect then this can only be ... Mostrar Tudo |
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Thesagro: |
Fertilidade; Fósforo; Micorriza. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02168naa a2200169 a 4500
001 1279583
005 2025-01-27
008 1990 bl uuuu u00u1 u #d
100 1 $aMCGONIGLE, T. P.
245 $aEffect of degree of soil disturbance of mycorrhizal colonization and phosphorus absorption by maize in growth chamber and field experiments.$h[electronic resource]
260 $c1990
520 $aPrior studies have established that phosphorus absorption by maize from undisturbed soil is greater than from soilwhich has been disturbed since the previous period of growth. Those experiments were conducted undercontrolled conditions and with only two disturbance treatments, namely disturbance of the soil by hand sufficientthat it will pass a 5 mm sieve, and no disturbance at all. We present here two experiments in which additionaltreatments of intermediate degrees of disturbance are included.In a growth chamber experiment, cutting the soil into 1, 2 or 4 cm cubes reduced the phosphorus absorptionand shoot dry matter, but the reduction was not as great as that after hand disturbance of the soil. In a fieldexperiment, the phosphorus absorption and shoot dry matter found in a conventional tillage and no-till treatmentswere less than in hand-planted no-till plots, but greater than with severe soil disturbance. In both experimentsincreases in shoot dry mass and shoot phosphorus concentration in the less disturbed treatments were notaccompanied by an increase in mycorrhizal colonization. This is inconsistent with earlier studies in whichcolonization was greater in undisturbed soil.Since it has now been demonstrated that increased colonization is not a necessary component in the processwhereby lack of disturbance results in improved plant performance, the role of mycorrhizas in this effect shouldbe reconsidered. If mycorrhizas are important in this respect then this can only be by means of changes in theexternal mycelium. However, without experimental confirmation this interpretation is speculative.
650 $aFertilidade
650 $aFósforo
650 $aMicorriza
700 1 $aEVANS, D. G.
773 $tNew Phytologist$gv. 116, n. 4, p. 629-636, 1990.
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Embrapa Florestas (CNPF) |
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| Registros recuperados : 16 | |
| 1. |  | SANTOS, V. C. dos; THOMAZINI, M. J. Abundância das principais espécies de moscas-brancas em culturas de importância agrícola no sudeste acreano. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPQ/UFAC/EMBRAPA, 15.; MOSTRA DE PESQUISA E PÓS-GRADUAÇÃO, 5., 2006, Rio Branco, AC. Novos rumos, novos caminhos na ciência, tecnologia & inovação: anais. Rio Branco, AC: Ufac, 2006. 1 p. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 2. | | COSTA, G. A. da; SANTOS, V. C. dos; SCHULTZ, E. L.; SOARES, I. P. Reforma a vapor do biogás usando catalisadores de óxidos mistos Ni/Mg-La para produção de gás de síntese. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 4.,2017, Brasília, DF. Anais... Brasília, DF: Embrapa, 2017. p. 115-120.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroenergia. |
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| 5. | | SANTOS, V, C.; CHAVES, C. S.; RIBEIRO, K. G.; PEREIRA, O. G.; CECCON, P. R.; GOMIDE, C. A. de M. Morphogenic, structural, and chemical characteristics of Brachiaria grass (Urochloa decumbens Stapf.) pastures in monoculture and intercropped with forage peanut under two grazing intensities. Semina. Ciências Agrárias, v. 44, n. 1, p. 375-392, jan./fev. 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 6. | | GUIMARÃES, R. P.; SANTOS, V. C.; PARANHOS, B. A. G.; AQUINO, N. C.; NASCIMENTO, R. R.; ALENCAR FILHO, E. B. Odorant binding protein as a management target for Ceratitis capitata: a window of opportunities for in vivo/in silico integration. Chemoecology, v. 35, n. 2, 47–72, 2025.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Semiárido. |
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| 8. | | SANTOS, V. C. dos; SAMPAIO, B. L.; COSTA, G. A. da; SCHULTZ, E. L.; SOARES, I. P. Uso de catalisadores multifuncionais à base de Ni e Mo para a produção de diesel verde pelo processo de hidrodesoxigenação a partir de materiais residuais da produção de biodiesel. In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 4.,2017, Brasília, DF. Anais... Brasília, DF: Embrapa, 2017. p. 148-153.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroenergia. |
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| 9. | | SANTOS, J. V. dos; SANTOS, V. C. G. dos; ABATE, G.; GARSSI, M. T.; PEREIRA, B. F.; MESSERSCHMIDT, I.; MARTINAZZO, R. Determinação de As(III) e As total em extratos aquosos de solos por ICP OES empregando sistema de geração de hidretos. In: ENCONTRO BRASILEIRO SOBRE ESPECIAÇÃO QUÍMICA, 4., 2014, Curitiba. Anais... Curitiba: EspeQBrasil, 2014.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 10. | | SANTOS, J. V. dos; PRESBITERS, R. J. B. de; SANTOS, V. C. G. dos; GRASSI, M. T.; MESSERSCHMIDT, I.; PEREIRA, B. F.; MARTINAZZO, R.; ABATE, G. Avaliação da liberação de elementos traço em solos tratados com xisto retortado. Quimica Nova, v. 40, n. 5, p. 496-505, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 11. | | LACAVA, P. T.; DIAS, A.; SANTOS, V. C.; FERREIRA, A.; QUECINE, M. C.; ARAÚJO, W. L.; MELO, I. S. de; AZEVEDO, J. L. Analysis and characterization of the bacteria community associated with tropical mangrove forest. In: INTERNATIONAL CONGRESS ON MOLECULAR PLANT-MICROBE INTERACTIONS, 13., 2007, Sorrento. Book of abstracts... Sorrento, 2007. p.238.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 12. | | ALENCAR FILHO, E. B.; GUIMARÃES, R. P.; SANTOS, V. C.; BISPO, A. B. P.; PARANHOS, B. A. G.; AQUINO, N. C.; NASCIMENTO, R.; OLIVEIRA NETO, R. F. Converging XGboost machine learning and molecular docking strategies to identify attractants for Ceratitis capitata: molecular characterization and database curation of natural ligands for in vitro/in vivo tests. Archives of Insect Biochemistry and Physiology, v. 120, n. 1, 2025.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 3 |
| Biblioteca(s): Embrapa Semiárido. |
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| 13. | | HAJI, F. N. P.; MOREIRA, A. N.; ALENCAR, J. A. de; BARBOSA, F. R.; LEITE, E. M.; COSTA, T. A. S.; FERREIRA, R. C. F.; LOPES, L. M. da M.; SANTOS, C. A. P. dos; SANTOS, V. C. dos. Monitoramento das pragas da videira no contexto da produção integrada de frutas. In: SEMANA INTERNACIONAL DA FRUTICULTURA, FLORICULTURA E AGROINDÚSTRIA, 9.; SIMPÓSIO DE INOVAÇÕES TECNOLÓGICAS E GERENCIAIS, 2., 2002, Fortaleza. Frutal 2002. Fortaleza: Embrapa Agroindústria Tropical; Instituto Frutal: SINDIFRUTA, 2002. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 14. | | RIBEIRO, A. C. S.; TAIRA, A. R.; SANTOS, V. C.; BATISTA, R. I. T. P.; BALARO, M. F. A.; SCHMIDT, A. P. P.; UNGERFELD, R.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da; BRANDÃO, F. Z. Porcine FSH dose affects the efficiency of in vivo embryo production in Santa Inês sheep. Animal Reprodudtion, v. 19, supl. 2, e22094, 2022. OPU-IVF and ET Edição dos abstracts 35th Annual Meeting of the Brazilian Embryo Technology Society (SBTE)| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | HAJI, F. N. P.; COSTA, V. S. de O.; LOPES, P. R. C.; MOREIRA, A. N.; SANTOS, V. C. dos; SANTOS, C. A. P. dos; ALENCAR, J. A. de; BARBOSA, F. R. A produção integrada de uvas finas de mesa, no Submédio do Vale do São Francisco. In: SEMINÁRIO BRASILEIRO SOBRE PRODUÇÃO INTEGRADA DE FRUTAS, 5., 2003, Bento Gonçalves. Anais... Bento Gonçalves: Embrapa Uva e Vinho, 2003. p. 103. (Embrapa Uva e Vinho. Documentos, 39).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 16. | | RIBEIRO, A. C. S.; TAIRA. A. R.; SANTOS, V. C.; BRAIR, V. L.; LOPES, M. P. F.; BALARO, M. F. A.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da; UNGERFELD, R.; BRANDÃO, F. Z. Use of meloxicam with or without dipyrone in non-surgical embryo recovery in hair sheep: Effects on animal welfare. Reproduction in Domestic Animals, v. 58, n. 7, p. 972-981, Jul. 2023.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 16 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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