| |
|
|
| Registros recuperados : 14 | |
| 14. |  | BALOTA, E. L.; YADA, I. F. U.; AMARAL, H. F.; NAKATANI, A. S.; HUNGRIA, M.; DICK, R. P.; COYNE, M. S. Soil quality in relation to forest conversion to perennial or annual cropping in southern Brasil. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 39, n. 4, p. 1003-1014, Jul./Aug. 2015.| Biblioteca(s): Embrapa Soja. |
|    |
| Registros recuperados : 14 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
30/09/2004 |
|
Data da última atualização: |
30/09/2004 |
|
Autoria: |
MENDES, I. C.; BANDICK, A. K.; DICK, R. P.; BOTTOMLEY, P. J. |
|
Título: |
Microbial biomass and activities in soil aggegates affected by winter cover crops. |
|
Ano de publicação: |
1999 |
|
Fonte/Imprenta: |
Soil Science Society of America Journal, Madison, v. 63, p. 873-881, 1999. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Witer cover may increase soil organic matter (SOM) and improve soil structure in intensively managed summer vegetable croping systems. Our study examined the influence of three cover crop treatments ( fallow, cereal, and legume within a summer crop rotation of sweet corn and broccoli) on microbiological properties associated with five soil aggregate-size classes (<0.25,0.25 to 0.5 0.5 to 1.0, 1.0 to 2.0, and 2.0 to 5.0 mm) of a willamentte silt loam ( Pachic Ultic Argixerolls). The distribuitions of total organic C ( TOC), total Kjeldahl N (TKN), soil microbial biomass c (SMBC), readily mineralizable Cand N, and two enzyme activities (B-glucosidade and fluorescein diacetade [FDA] hydrolysis) were compared among aggregate-size classes of surface (0-20 cm) soils at seedbed preparation (June 1996) and after harvest of either brocoli (September 1995) or sweet corn (September 1996). Although cover croping did not significantly influence aggregate - size distribuition, TOC, nor TKN on any sampling date, it did significantly (P<0.05) influence SMBC in September 1995, mineralizable C and N and FDA hydrolisys and B- glucosidade activites in june 1996, and levels of mineralizable C and N and B-glucosidade activiy in september 1996. Significant(P<0.01) interactions occurred among the cover crop treatments and aggregate-size classes for SMBC in September 1995, an among mineralizable C and N FDA hydrolisys in june and september 1996. Mineralizable C and N and FDA Hydrolisys differed ( P < 0.01) among aggregatesize classes between june and september 1996: These changes were significantly (P<0.01) sffected by cover crop treatment. these studies identified focal pints for further research on the effects of aggregatesize classes and cover croping on activities and dynamics of their respective microbial communities. MenosWiter cover may increase soil organic matter (SOM) and improve soil structure in intensively managed summer vegetable croping systems. Our study examined the influence of three cover crop treatments ( fallow, cereal, and legume within a summer crop rotation of sweet corn and broccoli) on microbiological properties associated with five soil aggregate-size classes (<0.25,0.25 to 0.5 0.5 to 1.0, 1.0 to 2.0, and 2.0 to 5.0 mm) of a willamentte silt loam ( Pachic Ultic Argixerolls). The distribuitions of total organic C ( TOC), total Kjeldahl N (TKN), soil microbial biomass c (SMBC), readily mineralizable Cand N, and two enzyme activities (B-glucosidade and fluorescein diacetade [FDA] hydrolysis) were compared among aggregate-size classes of surface (0-20 cm) soils at seedbed preparation (June 1996) and after harvest of either brocoli (September 1995) or sweet corn (September 1996). Although cover croping did not significantly influence aggregate - size distribuition, TOC, nor TKN on any sampling date, it did significantly (P<0.05) influence SMBC in September 1995, mineralizable C and N and FDA hydrolisys and B- glucosidade activites in june 1996, and levels of mineralizable C and N and B-glucosidade activiy in september 1996. Significant(P<0.01) interactions occurred among the cover crop treatments and aggregate-size classes for SMBC in September 1995, an among mineralizable C and N FDA hydrolisys in june and september 1996. Mineralizable C and N and FDA Hydrolisys differed ( P ... Mostrar Tudo |
|
Palavras-Chave: |
Biomassa microbiana. |
|
Thesagro: |
Análise do Solo; Cerrado; Física do Solo; Planta de Cobertura; Química do Solo; Solo. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02526naa a2200241 a 4500
001 1567904
005 2004-09-30
008 1999 bl uuuu u00u1 u #d
100 1 $aMENDES, I. C.
245 $aMicrobial biomass and activities in soil aggegates affected by winter cover crops.
260 $c1999
520 $aWiter cover may increase soil organic matter (SOM) and improve soil structure in intensively managed summer vegetable croping systems. Our study examined the influence of three cover crop treatments ( fallow, cereal, and legume within a summer crop rotation of sweet corn and broccoli) on microbiological properties associated with five soil aggregate-size classes (<0.25,0.25 to 0.5 0.5 to 1.0, 1.0 to 2.0, and 2.0 to 5.0 mm) of a willamentte silt loam ( Pachic Ultic Argixerolls). The distribuitions of total organic C ( TOC), total Kjeldahl N (TKN), soil microbial biomass c (SMBC), readily mineralizable Cand N, and two enzyme activities (B-glucosidade and fluorescein diacetade [FDA] hydrolysis) were compared among aggregate-size classes of surface (0-20 cm) soils at seedbed preparation (June 1996) and after harvest of either brocoli (September 1995) or sweet corn (September 1996). Although cover croping did not significantly influence aggregate - size distribuition, TOC, nor TKN on any sampling date, it did significantly (P<0.05) influence SMBC in September 1995, mineralizable C and N and FDA hydrolisys and B- glucosidade activites in june 1996, and levels of mineralizable C and N and B-glucosidade activiy in september 1996. Significant(P<0.01) interactions occurred among the cover crop treatments and aggregate-size classes for SMBC in September 1995, an among mineralizable C and N FDA hydrolisys in june and september 1996. Mineralizable C and N and FDA Hydrolisys differed ( P < 0.01) among aggregatesize classes between june and september 1996: These changes were significantly (P<0.01) sffected by cover crop treatment. these studies identified focal pints for further research on the effects of aggregatesize classes and cover croping on activities and dynamics of their respective microbial communities.
650 $aAnálise do Solo
650 $aCerrado
650 $aFísica do Solo
650 $aPlanta de Cobertura
650 $aQuímica do Solo
650 $aSolo
653 $aBiomassa microbiana
700 1 $aBANDICK, A. K.
700 1 $aDICK, R. P.
700 1 $aBOTTOMLEY, P. J.
773 $tSoil Science Society of America Journal, Madison$gv. 63, p. 873-881, 1999.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
