| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
24/07/2001 |
|
Data da última atualização: |
24/07/2001 |
|
Autoria: |
NDIAYE, E. L.; SANDENO, J. M.; MCGRATH, D.; DICK, R. P. |
|
Título: |
Integrative biological indicators for detecting change in soil quality. |
|
Ano de publicação: |
2000 |
|
Fonte/Imprenta: |
American Journal of Alternative Agriculture, Greenbelt, v. 15, n. 1, p. 26-36, 2000. |
|
Idioma: |
Inglês |
|
Conteúdo: |
To promote agricultural sustainability, there is a growing interest in developing soil quality indicators that can be used as early indicators of changes in management practices by growers agricultural professionals, and researchers. A study was conducted on four commercial growers fields and two research stations in western Oregon with that had been started from 1 to 7 years prior to initiating the investigation. The primary comparison at each site was a winter cover crop and winter fallow in rotation with summer vegetable crops. The effects of these treatments on microbial biomass carbon (MBc), mineralizable N, soil enzyme activity (arylsulfatase and B-glucosidase), and cotton strip decomposition were analyzed to monitor changes in soil quality over a 2-year period. The cotton strip method was tested because of its simplicity (buried in soil for short periods and then assessed for tensile strength or weight loss) and potential as a soil biological indicator. Results showed that cover cropping significantly affected MBc and soil enzyme activity. Mineralizable N and CO2 respiration (laboratory incubation) did not respond to winter cover crop treatment. Cotton strip decomposition was relatively ensensitive to field treatments. Because MBc and B-glucosidase activity responded quickly to field management treatment and were less variable than the other measurements, they showed the most potential as soil quality indicators. Total C (organic matter index) and extractable nutrients were not significantly affected by cover cropping (even after 7 years), indicanting selected biological properties are superior to these chemical properties for detecting effects of soil management. MenosTo promote agricultural sustainability, there is a growing interest in developing soil quality indicators that can be used as early indicators of changes in management practices by growers agricultural professionals, and researchers. A study was conducted on four commercial growers fields and two research stations in western Oregon with that had been started from 1 to 7 years prior to initiating the investigation. The primary comparison at each site was a winter cover crop and winter fallow in rotation with summer vegetable crops. The effects of these treatments on microbial biomass carbon (MBc), mineralizable N, soil enzyme activity (arylsulfatase and B-glucosidase), and cotton strip decomposition were analyzed to monitor changes in soil quality over a 2-year period. The cotton strip method was tested because of its simplicity (buried in soil for short periods and then assessed for tensile strength or weight loss) and potential as a soil biological indicator. Results showed that cover cropping significantly affected MBc and soil enzyme activity. Mineralizable N and CO2 respiration (laboratory incubation) did not respond to winter cover crop treatment. Cotton strip decomposition was relatively ensensitive to field treatments. Because MBc and B-glucosidase activity responded quickly to field management treatment and were less variable than the other measurements, they showed the most potential as soil quality indicators. Total C (organic matter index) and extractable nutrien... Mostrar Tudo |
|
Palavras-Chave: |
Atividade Engimica; Biomassa microbiana; N; Quality. |
|
Thesagro: |
Cobertura do Solo; Mineralização; Nitrogênio; Qualidade; Solo. |
|
Thesaurus Nal: |
cover crops; enzyme activity; microbial biomass; mineralization; nitrogen; soil. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02592naa a2200337 a 4500
001 1621223
005 2001-07-24
008 2000 bl --- 0-- u #d
100 1 $aNDIAYE, E. L.
245 $aIntegrative biological indicators for detecting change in soil quality.
260 $c2000
520 $aTo promote agricultural sustainability, there is a growing interest in developing soil quality indicators that can be used as early indicators of changes in management practices by growers agricultural professionals, and researchers. A study was conducted on four commercial growers fields and two research stations in western Oregon with that had been started from 1 to 7 years prior to initiating the investigation. The primary comparison at each site was a winter cover crop and winter fallow in rotation with summer vegetable crops. The effects of these treatments on microbial biomass carbon (MBc), mineralizable N, soil enzyme activity (arylsulfatase and B-glucosidase), and cotton strip decomposition were analyzed to monitor changes in soil quality over a 2-year period. The cotton strip method was tested because of its simplicity (buried in soil for short periods and then assessed for tensile strength or weight loss) and potential as a soil biological indicator. Results showed that cover cropping significantly affected MBc and soil enzyme activity. Mineralizable N and CO2 respiration (laboratory incubation) did not respond to winter cover crop treatment. Cotton strip decomposition was relatively ensensitive to field treatments. Because MBc and B-glucosidase activity responded quickly to field management treatment and were less variable than the other measurements, they showed the most potential as soil quality indicators. Total C (organic matter index) and extractable nutrients were not significantly affected by cover cropping (even after 7 years), indicanting selected biological properties are superior to these chemical properties for detecting effects of soil management.
650 $acover crops
650 $aenzyme activity
650 $amicrobial biomass
650 $amineralization
650 $anitrogen
650 $asoil
650 $aCobertura do Solo
650 $aMineralização
650 $aNitrogênio
650 $aQualidade
650 $aSolo
653 $aAtividade Engimica
653 $aBiomassa microbiana
653 $aN
653 $aQuality
700 1 $aSANDENO, J. M.
700 1 $aMCGRATH, D.
700 1 $aDICK, R. P.
773 $tAmerican Journal of Alternative Agriculture, Greenbelt$gv. 15, n. 1, p. 26-36, 2000.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 4 | |
| 1. |  | MARQUES, J. R. F.; CHAVES, R. de S.; McGRATH, D. G. Exploração sustentada da agricultura e pecuária de várzea. In: SEMINÁRIO INTERNACIONAL SOBRE MEIO AMBIENTE, POBREZA E DESENVOLVIMENTO DA AMAZÔNIA, 1992, Belém, PA. Anais... Belém, PA: Secretaria de Estado de Ciência, Tecnologia e Meio Ambiente: PRODEPA, 1992. p. 269-274.| Biblioteca(s): Embrapa Amazônia Oriental. |
|    |
| 2. | | GUMIER-COSTA, F.; MCGRATH, D. G.; PEZZUTI, J. C. B.; HOMMA, A. K. O. Parcerias institucionais e evolução do extrativismo de jaborandi na Floresta Nacional de Carajás, Pará, Brasil. Sustentabilidade em Debate, Brasília, DF, v. 7, n. 3, p. 91-111, dez. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 3. | | ARAUJO, A. A.; LEITE, A. C. P.; CARTAXO, C. B. C.; McGRATH, D.; BRITO, E. C. M. Pesquisa de mercado sobre produtos agroflorestais; Cupuacu (Theobroma grandiflorum, Acai (Euterpe sp.) e Caja (Spondias lutea). In: CONGRESSO BRASILEIRO SOBRE SISTEMAS AGROFLORESTAIS, 1.; ENCONTRO SOBRE SISTEMAS AGROFLORESTAIS NOS PAÍSES DO MERCOSUL, 1., 1994, Porto Velho. Anais. Colombo: EMBRAPA-CNPF, 1994. v. 2, p. 439-448. (EMBRAPA-CNPF. Documentos, 27).| Biblioteca(s): Embrapa Florestas. |
| |
| 4. | | ARAUJO, A. A.; LEITE, A. C. P.; CARTAXO, C. B. da C.; McGRATH, D.; BRITO, E. C. M. Pesquisa de mercado sobre produtos agroflorestais: cupuaçu (Theobroma grandiflorum), açaí (Euterpe sp) e cajá (Spondias lutea). In: CONGRESSO BRASILEIRO SOBRE SISTEMAS AGROFLORESTAIS, 1.; ENCONTRO SOBRE SISTEMAS AGROFLORESTAIS EM PAÍSES DO MERCOSUL, 1., 1994, Porto Velho. Sistemas agroflorestais no desenvolvimento sustentável: anais. Colombo: EMBRAPA-CNPF, 1994. V. 2: trabalhos voluntários. p. 439-448. (EMBRAPA-CNPF. Documentos, 27). Editores: Luciano J. Montoya; Moacir J. S. Medrado.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
| |
| Registros recuperados : 4 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
