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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
09/09/2010 |
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Data da última atualização: |
19/05/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. P.; BABUJIA, L. C.; FRANCHINI, J. C.; SOUZA, R. A.; HUNGRIA, M. |
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Afiliação: |
ADRIANA PEREIRA SILVA, UEL; LETÍCIA CARLOS BABUJIA, UEL; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; ROSINEI APARECIDA SOUZA; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Microbial biomass under various soil- and crop-management systems in short- and long-term experiments in Brazil. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Field Crops Research, v. 119, n. 1, p. 20-26, Oct. 2010. |
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DOI: |
10.1016/j.fcr.2010.06.012 |
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Idioma: |
Inglês |
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Conteúdo: |
Management and cropping systems varying in soil mobilization rates and plant-residue inputs may have profound effects on the biological properties of soil. Therefore, the objective of this study was to quantify soil microbial biomass carbon and nitrogen (MB-C and MB-N)?by means of the fumigation-extraction method?under varied soil-management and crop-rotation/succession systems in southern Brazil, correlating the results with yields of soybean and maize crops. The microbial biomass and grain yields were examined at the 0?10 cm layer in four short- to long-term field experiments. Experiment 1 was a 26-year trial consisting of four soil-management systems: (1) no-tillage (NT), (2) conventional tillage [(CT) with disc plough], (3) field cultivator (FC) or (4) heavy-disc harrow (DH), each with a crop succession (CS) of soybean (summer) and wheat (winter). Experiment 2 was a 21-year trial consisting of one CS, soybean/wheat every year) and seven crop rotations (CRs) comprising soybean, maize, wheat and green manures (lupine, radish and black oat), under the NT system. Experiment 3 comprised a 14-year CT trial, and 4-year and 14-year NT trials, with both one CS and two CRs. Experiment 4, a 10-year trial consisted of CT and NT and three CRs. Analyses were performed during the summer and winter croppings. Differences in microbial parameters, as a function of crop succession and rotation, were not easily detected as they varied as a function of a complex combination of plant species and time of implementation of the experiment. In contrast, MB-C and MB-N values were consistently higher?up to more than 100%?under NT in comparison to CT and were associated with higher grain yields. Our results?from this wide range of experiments?suggest that MB-C and, particularly, MB-N are sensitive indicators of the effects of soil- and crop-management regimens. MenosManagement and cropping systems varying in soil mobilization rates and plant-residue inputs may have profound effects on the biological properties of soil. Therefore, the objective of this study was to quantify soil microbial biomass carbon and nitrogen (MB-C and MB-N)?by means of the fumigation-extraction method?under varied soil-management and crop-rotation/succession systems in southern Brazil, correlating the results with yields of soybean and maize crops. The microbial biomass and grain yields were examined at the 0?10 cm layer in four short- to long-term field experiments. Experiment 1 was a 26-year trial consisting of four soil-management systems: (1) no-tillage (NT), (2) conventional tillage [(CT) with disc plough], (3) field cultivator (FC) or (4) heavy-disc harrow (DH), each with a crop succession (CS) of soybean (summer) and wheat (winter). Experiment 2 was a 21-year trial consisting of one CS, soybean/wheat every year) and seven crop rotations (CRs) comprising soybean, maize, wheat and green manures (lupine, radish and black oat), under the NT system. Experiment 3 comprised a 14-year CT trial, and 4-year and 14-year NT trials, with both one CS and two CRs. Experiment 4, a 10-year trial consisted of CT and NT and three CRs. Analyses were performed during the summer and winter croppings. Differences in microbial parameters, as a function of crop succession and rotation, were not easily detected as they varied as a function of a complex combination of plant species ... Mostrar Tudo |
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Palavras-Chave: |
Biomassa microbiana. |
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Thesagro: |
Microrganismo; Qualidade; Rotacao de cultura; Soja; Solo. |
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Thesaurus Nal: |
Corn; Crop rotation; Microbial biomass; Soil microorganisms; Soil quality; Soybeans. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
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Registro original: |
Embrapa Soja (CNPSO) |
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| 1. |  | SANTOS, J. P.; BIANCO, R.; NAKANO, O.; CAMPOS, T. C.; MERLO, R. M. F. Efeito de alguns inseticidas aplicados isoladamente ou em mistura para o tratamento de sementes de milho. In: CONGRESSO NACIONAL DE MILHO E SORGO, 18., 1990, Vitória. Resumos. Vitoria: EMCAPA/EMBRAPA, 1990. p. 78. (EMCAPA. Documentos, 65).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 2. | | MARRIEL, I. E.; OLIVEIRA-PAIVA, C. A.; SILVA, A. G.; CAMPOS, T. C.; CALDEIRA, D. C. D.; COURDEC, V. S. J. A.; VIEIRA, S.; MATTOS, B. B.; PARRELLA, R. A. da C. Ocorrência de bactérias diazotróficas associativas em plantas de sorgo sacarino (Sorghum bicolor) cultivadas no cerrado. In: CONGRESSO LATINOAMERICANO DE MICROBIOLOGIA, 21., 2012, Santos. Resumos... Santos: Sociedade Brasileira de Microbiologia, 2012.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 2 | |
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