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41. | | COSTA, F. P.; MACEDO, M. C. M. Economic evaluation of agropastoral systems: some alternatives for Central Brazil. In: KANNO, T.; MACEDO, M.C.M., ed. JIRCAS / EMBRAPA gado de corte international joint workshop on agropastoral system in South America. [Tsukuba]: JIRCAS, 2001. p.57-62. (JIRCAS Working Report, 19). EMBRAPA-CNPGC and JIRCAS joint International Workshop on Agropastoral Systems in South America, held in Campo Grande, MS, Brazil, 1999. Biblioteca(s): Embrapa Cerrados. |
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48. | | MACEDO, M. C. M.; ZIMMER, A. H. Potencial para Adoção da Estratégia de Integração Lavoura-Pecuária e de Integração Lavoura-Pecuária-Floresta para recuperação de pastagens degradadas In: CORDEIRO, L. A. M.; VILELA, L.; KLUTHCOUSKI, J.; MARCHÃO, R. L. (Ed.). Integração lavoura-pecuária-floresta: o produtor pergunta, a Embrapa responde. Brasília, DF: Embrapa, 2015. p.307-318 (Coleção 500 perguntas, 500 respostas). Biblioteca(s): Embrapa Gado de Corte. |
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56. | | MACEDO, M. C. M.; SOUZA, F. H. D. de. Adubacao fosfatada e calagem na producao de Stylosanthes guianessis var. Vulgaris, cv. "Mineirao". Informativo ABRATES, Londrina, v.3, n.3, p.130, 1993. Resumo 219. CNPGC. Congresso Brasileiro de Sementes, 8., 1993, Foz de Iguacu. Biblioteca(s): Embrapa Gado de Corte. |
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Registros recuperados : 474 | |
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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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