|
|
Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
27/09/1999 |
Data da última atualização: |
27/09/1999 |
Autoria: |
GODOY, I. J. de; MORAES, S. A. de; SIQUEIRA, W. J.; PEREIRA, J. C. V. A.; MARTINS, A. L. de M.; PAULO, E. M. |
Título: |
Produtividade, estabilidade e adaptabilidade de cultivares de amendoim em tres niveis de controle de doencas foliares. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, v.34,n.7,p.1183-1191,1999. |
Idioma: |
Português |
Conteúdo: |
O objetivo deste trabalho foi avaliar o desempenho produtivo, a estabilidade da producao e adaptabilidade de tres cultivares de amendoim em diversos ambientes tipicos de cultivo e severidade das doencas foliares que podem ocorrer no Estado de Sao Paulo. |
Palavras-Chave: |
Brasil; Cultivares; Disease-control; Doencas-controle; Minas Gerais; Peanut; Ribeirao Preto. |
Thesagro: |
Amendoim; Arachis Hypogaea. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01081naa a2200289 a 4500 001 1270821 005 1999-09-27 008 1999 bl uuuu u00u1 u #d 100 1 $aGODOY, I. J. de 245 $aProdutividade, estabilidade e adaptabilidade de cultivares de amendoim em tres niveis de controle de doencas foliares. 260 $c1999 520 $aO objetivo deste trabalho foi avaliar o desempenho produtivo, a estabilidade da producao e adaptabilidade de tres cultivares de amendoim em diversos ambientes tipicos de cultivo e severidade das doencas foliares que podem ocorrer no Estado de Sao Paulo. 650 $aAmendoim 650 $aArachis Hypogaea 653 $aBrasil 653 $aCultivares 653 $aDisease-control 653 $aDoencas-controle 653 $aMinas Gerais 653 $aPeanut 653 $aRibeirao Preto 700 1 $aMORAES, S. A. de 700 1 $aSIQUEIRA, W. J. 700 1 $aPEREIRA, J. C. V. A. 700 1 $aMARTINS, A. L. de M. 700 1 $aPAULO, E. M. 773 $tPesquisa Agropecuaria Brasileira$gv.34,n.7,p.1183-1191,1999.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Algodão (CNPA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
04/09/2015 |
Data da última atualização: |
02/01/2024 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
TONUCCI, R. G.; GARCIA, R.; NAIR, V. |
Afiliação: |
RAFAEL GONCALVES TONUCCI, CNPC; Rasmo Garcia, Federal Univ. of Viçosa (UFV) - Viçosa, MG, Brazil; Vimala Nair, Soil and Water Science Dep. Univ. of Florida, Gainesville. |
Título: |
Trees and grass contribution to soil organic carbon in agroforestry systems. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: proceedings. Brasília, DF: Embrapa, 2015. |
Idioma: |
Inglês |
Conteúdo: |
Agroforestry systems have the potential to enhance carbon (C) sequestration in soil compared with treeless (agricultural) systems (Montagnini & Nair, 2004). When one type of vegetation is replaced with another, stable isotope contents (?13 C) values can be used to identify soil organic carbon (SOC) derived from residues in the native vegetation and the new vegetation based on discrimination between C3 and C4 plants. The present study aimed to assessing the impact of difference land-use systems on C3 and C4 contribution to SOC. The experimental area is located inside the Cerrado biome. Soil samples were taken from six different land-use sites: (i) native local forest; (ii) Eucalyptus forest (EF) established in 1985 (OEC); (iii) EF established in 2004 (NEC); (iv) pasture of B. decumbens; (v) Agroforestry System (AF) established on 1994 (OAF); and (vi) AF established on 2004 (NAF). The establishment on AF was placed first with the eucalyptus planted and rice (Oryza sativa), soybean (Glycine max) and braquiaria grass (B. Brizantha cv. Marandu) in between trees rows. Soil was collected from four depths (0-10; 10-20; 20-50 and 50-100 cm). For stable C isotope analysis, whole soil was analyzed mass spectrometer. The percentage of SOC derived from the Brachiaria ssp., a C4 plant, or from the eucalyptus or native forest, a C3 plant, was estimated based on the equations: % C4-derived SOC = (?- ?T)/(?G- ?T) x 100 (1); % C3-derived SOC = 100 - % C4-derived SOC (2) Based on the equations 1 and 2 were calculated the contributions of each C3 and C4 species in SOC C-derived, as follows: C3-devived SOC (Mg ha-1) = (% C3-derived SOC) x (SOC content, Mg ha-1) (3); C4-derived SOC (Mg ha-1) = (% C4-derived SOC) x (SOC content, Mg ha-1) (4). A complete randomized design was used with Tukey?s studentized. Statistical differences were considered significant at p <0.05. MenosAgroforestry systems have the potential to enhance carbon (C) sequestration in soil compared with treeless (agricultural) systems (Montagnini & Nair, 2004). When one type of vegetation is replaced with another, stable isotope contents (?13 C) values can be used to identify soil organic carbon (SOC) derived from residues in the native vegetation and the new vegetation based on discrimination between C3 and C4 plants. The present study aimed to assessing the impact of difference land-use systems on C3 and C4 contribution to SOC. The experimental area is located inside the Cerrado biome. Soil samples were taken from six different land-use sites: (i) native local forest; (ii) Eucalyptus forest (EF) established in 1985 (OEC); (iii) EF established in 2004 (NEC); (iv) pasture of B. decumbens; (v) Agroforestry System (AF) established on 1994 (OAF); and (vi) AF established on 2004 (NAF). The establishment on AF was placed first with the eucalyptus planted and rice (Oryza sativa), soybean (Glycine max) and braquiaria grass (B. Brizantha cv. Marandu) in between trees rows. Soil was collected from four depths (0-10; 10-20; 20-50 and 50-100 cm). For stable C isotope analysis, whole soil was analyzed mass spectrometer. The percentage of SOC derived from the Brachiaria ssp., a C4 plant, or from the eucalyptus or native forest, a C3 plant, was estimated based on the equations: % C4-derived SOC = (?- ?T)/(?G- ?T) x 100 (1); % C3-derived SOC = 100 - % C4-derived SOC (2) Based on the equations... Mostrar Tudo |
Palavras-Chave: |
Agroforestry systems; Brasil; Minas Gerais; Organic carbon; Sistema agroflorestal. |
Thesagro: |
Carbono; Cerrado; Composto orgânico; Solo; Uso da terra. |
Thesaurus NAL: |
Brazil; Land use; Organic compounds; Soil. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129065/1/cnpc-2015-Trees.pdf
|
Marc: |
LEADER 02857nam a2200301 a 4500 001 2023312 005 2024-01-02 008 2015 bl uuuu u00u1 u #d 100 1 $aTONUCCI, R. G. 245 $aTrees and grass contribution to soil organic carbon in agroforestry systems.$h[electronic resource] 260 $aIn: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: proceedings. Brasília, DF: Embrapa$c2015 520 $aAgroforestry systems have the potential to enhance carbon (C) sequestration in soil compared with treeless (agricultural) systems (Montagnini & Nair, 2004). When one type of vegetation is replaced with another, stable isotope contents (?13 C) values can be used to identify soil organic carbon (SOC) derived from residues in the native vegetation and the new vegetation based on discrimination between C3 and C4 plants. The present study aimed to assessing the impact of difference land-use systems on C3 and C4 contribution to SOC. The experimental area is located inside the Cerrado biome. Soil samples were taken from six different land-use sites: (i) native local forest; (ii) Eucalyptus forest (EF) established in 1985 (OEC); (iii) EF established in 2004 (NEC); (iv) pasture of B. decumbens; (v) Agroforestry System (AF) established on 1994 (OAF); and (vi) AF established on 2004 (NAF). The establishment on AF was placed first with the eucalyptus planted and rice (Oryza sativa), soybean (Glycine max) and braquiaria grass (B. Brizantha cv. Marandu) in between trees rows. Soil was collected from four depths (0-10; 10-20; 20-50 and 50-100 cm). For stable C isotope analysis, whole soil was analyzed mass spectrometer. The percentage of SOC derived from the Brachiaria ssp., a C4 plant, or from the eucalyptus or native forest, a C3 plant, was estimated based on the equations: % C4-derived SOC = (?- ?T)/(?G- ?T) x 100 (1); % C3-derived SOC = 100 - % C4-derived SOC (2) Based on the equations 1 and 2 were calculated the contributions of each C3 and C4 species in SOC C-derived, as follows: C3-devived SOC (Mg ha-1) = (% C3-derived SOC) x (SOC content, Mg ha-1) (3); C4-derived SOC (Mg ha-1) = (% C4-derived SOC) x (SOC content, Mg ha-1) (4). A complete randomized design was used with Tukey?s studentized. Statistical differences were considered significant at p <0.05. 650 $aBrazil 650 $aLand use 650 $aOrganic compounds 650 $aSoil 650 $aCarbono 650 $aCerrado 650 $aComposto orgânico 650 $aSolo 650 $aUso da terra 653 $aAgroforestry systems 653 $aBrasil 653 $aMinas Gerais 653 $aOrganic carbon 653 $aSistema agroflorestal 700 1 $aGARCIA, R. 700 1 $aNAIR, V.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|