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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Gado de Corte. |
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Data corrente: |
11/12/1997 |
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Data da última atualização: |
08/01/1998 |
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Autoria: |
ZIMMER, A. H.; CORREA, A. S. |
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Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
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Título: |
Producao de carne em pastagens tropicais. |
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Edição: |
2.ed. rev. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In : SIMPOSIO SOBRE O CERRADO, 7., 1989, Brasilia. Estrategias de utilizacao. Anais. Planaltina : EMBRAPA-CPAC, 1997. |
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Páginas: |
p.115-137. |
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Idioma: |
Português |
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Notas: |
CNPGC. |
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Conteúdo: |
A baixa produtividade das pastagens nativas pode ser aumentada pela introducao de forrageiras de melhor qualidade ou associando-se pastagens nativas e cultivadas. As pastagens cultivadas produzem maior volume de forragem, mas sua produtividade tambem varia com as condicoes de solo e clima, especies forrageiras e com a carga animal. Pastagens cultivadas, nos Cerrados, proporcionam bons ganhos em peso vivo no periodo chuvoso. A escassez de forragem na seca pode ser amenizada com forrageiras mais produtivas, uso estrategico das pastagens cultivadas, diferimento de pastagens e uso de legumineiras. O uso estrategico de pastagens cultivadas na seca permite antecipar a idade das novilhas em sua primeira cria e reduzir o intervalo entre a primeira e segunda paricao. Alem disso, possibilita a reducao da idade de abate. No modelo fisico de producao de cria, recria e engorda, implantado no CNPGC, a utilizacao de pastagens nativas e cultivadas, com suplementacao mineral, controle sanitario e assistencia tecnica, possibilitou aumentos expressivos da eficiencia reprodutiva, da taxa de desfrute e da producao de carne por area (35 kg/ha/ano). Os resultados obtidos mostram que e possivel aumentar a producao de carne, em regime exclusivo de pasto, com tecnologias simples, desde que se melhore, tambem, a administracao da fazenda. |
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Palavras-Chave: |
Brazilian savannas; Consorciacao; EMBRAPA-CNPGC; Fertilization; Grazing systems; Mixed pastures; Natural pastures; Regiao tropical; Tropical region. |
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Thesagro: |
Adubação; Bovino; Carne; Cerrado; Ganho de Peso; Pastagem; Pastagem Cultivada; Pastagem Nativa; Produção; Sistema de Produção. |
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Thesaurus Nal: |
cattle; farming systems; meat production; pastures; rotational grazing; sown pastures; weight gain. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02593naa a2200481 a 4500
001 1321799
005 1998-01-08
008 1997 bl uuuu u00u1 u #d
100 1 $aZIMMER, A. H.
245 $aProducao de carne em pastagens tropicais.
250 $a2.ed. rev.
260 $c1997
300 $ap.115-137.
500 $aCNPGC.
520 $aA baixa produtividade das pastagens nativas pode ser aumentada pela introducao de forrageiras de melhor qualidade ou associando-se pastagens nativas e cultivadas. As pastagens cultivadas produzem maior volume de forragem, mas sua produtividade tambem varia com as condicoes de solo e clima, especies forrageiras e com a carga animal. Pastagens cultivadas, nos Cerrados, proporcionam bons ganhos em peso vivo no periodo chuvoso. A escassez de forragem na seca pode ser amenizada com forrageiras mais produtivas, uso estrategico das pastagens cultivadas, diferimento de pastagens e uso de legumineiras. O uso estrategico de pastagens cultivadas na seca permite antecipar a idade das novilhas em sua primeira cria e reduzir o intervalo entre a primeira e segunda paricao. Alem disso, possibilita a reducao da idade de abate. No modelo fisico de producao de cria, recria e engorda, implantado no CNPGC, a utilizacao de pastagens nativas e cultivadas, com suplementacao mineral, controle sanitario e assistencia tecnica, possibilitou aumentos expressivos da eficiencia reprodutiva, da taxa de desfrute e da producao de carne por area (35 kg/ha/ano). Os resultados obtidos mostram que e possivel aumentar a producao de carne, em regime exclusivo de pasto, com tecnologias simples, desde que se melhore, tambem, a administracao da fazenda.
650 $acattle
650 $afarming systems
650 $ameat production
650 $apastures
650 $arotational grazing
650 $asown pastures
650 $aweight gain
650 $aAdubação
650 $aBovino
650 $aCarne
650 $aCerrado
650 $aGanho de Peso
650 $aPastagem
650 $aPastagem Cultivada
650 $aPastagem Nativa
650 $aProdução
650 $aSistema de Produção
653 $aBrazilian savannas
653 $aConsorciacao
653 $aEMBRAPA-CNPGC
653 $aFertilization
653 $aGrazing systems
653 $aMixed pastures
653 $aNatural pastures
653 $aRegiao tropical
653 $aTropical region
700 1 $aCORREA, A. S.
773 $tIn : SIMPOSIO SOBRE O CERRADO, 7., 1989, Brasilia. Estrategias de utilizacao. Anais. Planaltina : EMBRAPA-CPAC, 1997.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/05/2021 |
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Data da última atualização: |
18/05/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SILVA, K. A. da; NICOLA, V. B.; DUDAS, R. T.; DEMETRIO, W. C.; MAIA, L. dos S.; CUNHA, L.; BARTZ, M. L. C.; BROWN, G. G.; PASINI, A.; KILLE, P.; FERREIRA, N. G. C.; OLIVEIRA, C. M. R. de. |
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Afiliação: |
KARLO ALVES DA SILVA, Universidade Positivo; VITORIA BELTRAME NICOLA, Universidade Positivo; RAFAELA TAVARES DUDAS, Universidade Positivo; WILIAN CARLO DEMETRIO, Universidade Federal do Paraná; LILIANNE DOS SANTOS MAIA, Universidade Federal do Paraná; LUIS CUNHA, University of Coimbra; University of South Wales; MARIE LUISE CAROLINA BARTZ, Universidade Positivo; GEORGE GARDNER BROWN, CNPF; AMARILDO PASINI, Universidade Estadual de Londrina; PETER KILLE, Cardiff University; NUNO G. C. FERREIRA, Cardiff University; CÍNTIA MARA RIBAS DE OLIVEIRA, Universidade Positivo. |
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Título: |
Pesticides in a case study on no-tillage farming systems and surrounding forest patches in Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Scientific Reports, v. 11, Article number: 9839, 14 p., 2021. |
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DOI: |
https://doi.org/10.1038/s41598-021-88779-3 |
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Idioma: |
Português |
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Conteúdo: |
With the growing global concern on pesticide management, the relationship between its environmental recalcitrance, food security and human health has never been more relevant. Pesticides residues are known to cause significant environmental contamination. Here, we present a case study on long-term no-tillage farming systems in Brazil, where Glyphosate (GLY) has been applied for more than 35 years. GLY and its main breakdown product, aminomethylphosphonic acid (AMPA) were determined in topsoil (0–10 cm) samples from no-tillage fields and nearby subtropical secondary forests by high-performance liquid chromatography coupled with a fluorescence detector. In addition, the presence of carbamates, organochlorines, organophosphates and triazines were also screened for. GLY and AMPA were present in all soil samples, reaching values higher than those described for soils so far in the literature. A significant decrease for AMPA was observed only between the secondary forest and the farm’s middle slope for site B. GLY and AMPA were observed respectively at peak concentrations of 66.38 and 26.03 mg/kg soil. GLY was strongly associated with forest soil properties, while AMPA associated more with no-tillage soil properties. Soil texture was a significant factor contributing to discrimination of the results as clay and sand contents affect GLY and AMPA retention in soils. This was the first study to report DDT and metabolites in consolidated no-tillage soils in Brazil (a pesticide fully banned since 2009). Based on human risk assessment conducted herein and the potential risk of GLY to local soil communities, this study offers a baseline for future studies on potential adverse effects on soil biota, and mechanistic studies. MenosWith the growing global concern on pesticide management, the relationship between its environmental recalcitrance, food security and human health has never been more relevant. Pesticides residues are known to cause significant environmental contamination. Here, we present a case study on long-term no-tillage farming systems in Brazil, where Glyphosate (GLY) has been applied for more than 35 years. GLY and its main breakdown product, aminomethylphosphonic acid (AMPA) were determined in topsoil (0–10 cm) samples from no-tillage fields and nearby subtropical secondary forests by high-performance liquid chromatography coupled with a fluorescence detector. In addition, the presence of carbamates, organochlorines, organophosphates and triazines were also screened for. GLY and AMPA were present in all soil samples, reaching values higher than those described for soils so far in the literature. A significant decrease for AMPA was observed only between the secondary forest and the farm’s middle slope for site B. GLY and AMPA were observed respectively at peak concentrations of 66.38 and 26.03 mg/kg soil. GLY was strongly associated with forest soil properties, while AMPA associated more with no-tillage soil properties. Soil texture was a significant factor contributing to discrimination of the results as clay and sand contents affect GLY and AMPA retention in soils. This was the first study to report DDT and metabolites in consolidated no-tillage soils in Brazil (a pesticide fully ba... Mostrar Tudo |
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Palavras-Chave: |
Pesticidas. |
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Thesagro: |
Plantio Direto; Solo Florestal. |
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Thesaurus NAL: |
Pesticides. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223183/1/Silva-Brown-etal-2021-article-Scientific-Reports.pdf
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Marc: |
LEADER 02666naa a2200313 a 4500
001 2131763
005 2021-05-18
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1038/s41598-021-88779-3$2DOI
100 1 $aSILVA, K. A. da
245 $aPesticides in a case study on no-tillage farming systems and surrounding forest patches in Brazil.$h[electronic resource]
260 $c2021
520 $aWith the growing global concern on pesticide management, the relationship between its environmental recalcitrance, food security and human health has never been more relevant. Pesticides residues are known to cause significant environmental contamination. Here, we present a case study on long-term no-tillage farming systems in Brazil, where Glyphosate (GLY) has been applied for more than 35 years. GLY and its main breakdown product, aminomethylphosphonic acid (AMPA) were determined in topsoil (0–10 cm) samples from no-tillage fields and nearby subtropical secondary forests by high-performance liquid chromatography coupled with a fluorescence detector. In addition, the presence of carbamates, organochlorines, organophosphates and triazines were also screened for. GLY and AMPA were present in all soil samples, reaching values higher than those described for soils so far in the literature. A significant decrease for AMPA was observed only between the secondary forest and the farm’s middle slope for site B. GLY and AMPA were observed respectively at peak concentrations of 66.38 and 26.03 mg/kg soil. GLY was strongly associated with forest soil properties, while AMPA associated more with no-tillage soil properties. Soil texture was a significant factor contributing to discrimination of the results as clay and sand contents affect GLY and AMPA retention in soils. This was the first study to report DDT and metabolites in consolidated no-tillage soils in Brazil (a pesticide fully banned since 2009). Based on human risk assessment conducted herein and the potential risk of GLY to local soil communities, this study offers a baseline for future studies on potential adverse effects on soil biota, and mechanistic studies.
650 $aPesticides
650 $aPlantio Direto
650 $aSolo Florestal
653 $aPesticidas
700 1 $aNICOLA, V. B.
700 1 $aDUDAS, R. T.
700 1 $aDEMETRIO, W. C.
700 1 $aMAIA, L. dos S.
700 1 $aCUNHA, L.
700 1 $aBARTZ, M. L. C.
700 1 $aBROWN, G. G.
700 1 $aPASINI, A.
700 1 $aKILLE, P.
700 1 $aFERREIRA, N. G. C.
700 1 $aOLIVEIRA, C. M. R. de
773 $tScientific Reports$gv. 11, Article number: 9839, 14 p., 2021.
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Registro original: |
Embrapa Florestas (CNPF) |
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