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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
10/08/2007 |
Data da última atualização: |
24/06/2021 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
COELHO, J. G.; BARBOSA, P. F. |
Afiliação: |
Janaína Galvão Coelho, UNESP/Jaboticabal; PEDRO FRANKLIN BARBOSA, CPPSE/SÃO CARLOS, SP. |
Título: |
Relações entre idade ao primeiro parto e longevidade de vacas mestiças leiteiras. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA, 44., 2007, Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP, 2007. |
Descrição Física: |
1 CD-ROM |
Idioma: |
Português |
Palavras-Chave: |
Bovinos de leite. |
Thesagro: |
Gado leiteiro. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPPSE/17050/1/PROCIPFB2007.00071.pdf
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Marc: |
LEADER 00522nam a2200145 a 4500 001 1048016 005 2021-06-24 008 2007 bl uuuu u00u1 u #d 100 1 $aCOELHO, J. G. 245 $aRelações entre idade ao primeiro parto e longevidade de vacas mestiças leiteiras.$h[electronic resource] 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA, 44., 2007, Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP$c2007 300 $c1 CD-ROM 650 $aGado leiteiro 653 $aBovinos de leite 700 1 $aBARBOSA, P. F.
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Embrapa Pecuária Sudeste (CPPSE) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
19/08/2003 |
Data da última atualização: |
27/04/2020 |
Autoria: |
KANDA, K.; MIRANDA, C. H. B.; MACEDO, M. C. M. |
Afiliação: |
National Institute for Agro-Environmental Sciences (Tsukuba, Japan).; CESAR HERACLIDES BEHLING MIRANDA, CNPAE; MANUEL CLAUDIO MOTTA MACEDO, CNPGC. |
Título: |
Carbon an nitrogen mineralization in solis under agro-pastoral systems in subtropical Central Brazil. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Soil Science and Plant Nutrition, Tokyo, v. 48, n. 2, p. 174-184, 2002. |
Idioma: |
Inglês |
Notas: |
CNPGC. |
Conteúdo: |
Agro-pastoral systems that combine soybean and grrasses in crop rotation have been recommended to sustain grassland productivity in the subtropical soils of Central Brazil (Cerrados forest area) with a low-fertility. In 1999, soil samples were taken during a field experiment on agro-pastoral system initiated in a Purple Red Latosol in Campo Grande, MS, Brazil, from 1) field with continuos soybean cropping; 2) a field with soybean cultivation after 4 years of use as a grassland (rotational soybean); 3) continuous grassland; 4) grassland planted after 4 years of soybean cultivation (rotational grassland), 5) degraded grassland; and 6) original Cerrados forest. Total carbon (C) and nitrogen (N) contents and mineralization potentials were determined. The results indicated that replacement of the Cerrados forest by a pure grassland and exploitation without propor cattle management and fertilizer application led to a descrease in both total C and N contents. Continuous cultivation of soybean on such a degraded grassland area induced area induced a further decrease, which could be alleviated by rotation with a grassland. On the other hand, soil C and N mineralization potentials were not appreciably affected, indicating that grassland degradation did not affect these parameters. C and N mineralization showed a seasonal pattern, being higher in the rainy season (November) than in the dry season (April). Overall, it can be concluded that a grass-soybean rotation (agro-pastoral system) may benefit agricultural exploitation in the Brazilian Cerrados area, as both complement each other in maintaining a suitable soil C balance.. MenosAgro-pastoral systems that combine soybean and grrasses in crop rotation have been recommended to sustain grassland productivity in the subtropical soils of Central Brazil (Cerrados forest area) with a low-fertility. In 1999, soil samples were taken during a field experiment on agro-pastoral system initiated in a Purple Red Latosol in Campo Grande, MS, Brazil, from 1) field with continuos soybean cropping; 2) a field with soybean cultivation after 4 years of use as a grassland (rotational soybean); 3) continuous grassland; 4) grassland planted after 4 years of soybean cultivation (rotational grassland), 5) degraded grassland; and 6) original Cerrados forest. Total carbon (C) and nitrogen (N) contents and mineralization potentials were determined. The results indicated that replacement of the Cerrados forest by a pure grassland and exploitation without propor cattle management and fertilizer application led to a descrease in both total C and N contents. Continuous cultivation of soybean on such a degraded grassland area induced area induced a further decrease, which could be alleviated by rotation with a grassland. On the other hand, soil C and N mineralization potentials were not appreciably affected, indicating that grassland degradation did not affect these parameters. C and N mineralization showed a seasonal pattern, being higher in the rainy season (November) than in the dry season (April). Overall, it can be concluded that a grass-soybean rotation (agro-pastoral syste... Mostrar Tudo |
Palavras-Chave: |
Agropastoral systems; Brasil Central; Brazilian savannas; Central of Brazil; Integracao agricultura-pecuaria; Soils. |
Thesagro: |
Carbono; Cerrado; Fertilizante Nitrogenado; Solo. |
Thesaurus NAL: |
carbon; nitrogen fertilizers. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02503naa a2200301 a 4500 001 1325367 005 2020-04-27 008 2002 bl --- 0-- u #d 100 1 $aKANDA, K. 245 $aCarbon an nitrogen mineralization in solis under agro-pastoral systems in subtropical Central Brazil. 260 $c2002 500 $aCNPGC. 520 $aAgro-pastoral systems that combine soybean and grrasses in crop rotation have been recommended to sustain grassland productivity in the subtropical soils of Central Brazil (Cerrados forest area) with a low-fertility. In 1999, soil samples were taken during a field experiment on agro-pastoral system initiated in a Purple Red Latosol in Campo Grande, MS, Brazil, from 1) field with continuos soybean cropping; 2) a field with soybean cultivation after 4 years of use as a grassland (rotational soybean); 3) continuous grassland; 4) grassland planted after 4 years of soybean cultivation (rotational grassland), 5) degraded grassland; and 6) original Cerrados forest. Total carbon (C) and nitrogen (N) contents and mineralization potentials were determined. The results indicated that replacement of the Cerrados forest by a pure grassland and exploitation without propor cattle management and fertilizer application led to a descrease in both total C and N contents. Continuous cultivation of soybean on such a degraded grassland area induced area induced a further decrease, which could be alleviated by rotation with a grassland. On the other hand, soil C and N mineralization potentials were not appreciably affected, indicating that grassland degradation did not affect these parameters. C and N mineralization showed a seasonal pattern, being higher in the rainy season (November) than in the dry season (April). Overall, it can be concluded that a grass-soybean rotation (agro-pastoral system) may benefit agricultural exploitation in the Brazilian Cerrados area, as both complement each other in maintaining a suitable soil C balance.. 650 $acarbon 650 $anitrogen fertilizers 650 $aCarbono 650 $aCerrado 650 $aFertilizante Nitrogenado 650 $aSolo 653 $aAgropastoral systems 653 $aBrasil Central 653 $aBrazilian savannas 653 $aCentral of Brazil 653 $aIntegracao agricultura-pecuaria 653 $aSoils 700 1 $aMIRANDA, C. H. B. 700 1 $aMACEDO, M. C. M. 773 $tSoil Science and Plant Nutrition, Tokyo$gv. 48, n. 2, p. 174-184, 2002.
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