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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha; Santa Teresa. |
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Data corrente: |
03/01/2017 |
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Data da última atualização: |
16/11/2020 |
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Autoria: |
FERREIRA, A. de M. |
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Título: |
Manejo reprodutivo e sua importância na eficiência da atividade leiteira. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Coronel Pacheco : EMBRAPA-CNPGL, 1991. |
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Páginas: |
47 p. |
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Série: |
(EMBRAPA-CNPGL. Documentos, 46). |
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Idioma: |
Português |
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Conteúdo: |
Este Documento e parte integrante da "CAMPANHA NACIONAL DE AUMENTO DA PRODUTIVIDADE EM REBANHOS LEITEIROS ATRAVÉS DO ENCURTAMENTO DO INTERVALO ENTRE PARTOS", recentemente lançada pelo Centro Nacional de Pesquisa de Gado de Leite (CNPGL) - EMBRAPA. A meta dessa Campanha e elevar a produção anual de leite no pais em cerca de 50%, independente de melhoria genética, apenas com melhor aproveitamento do potencial já existente, o que se consegue concentrando esforços no sentido de reduzir o intervalo entre partos de 18 a 20 meses para próximo de 12 a 14 meses. O melhoramento genético poderá ser introduzido nas poucas fazendas já com condições, ou, numa segunda etapa, nas fazendas que teriam primeiro de se estruturar. |
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Palavras-Chave: |
Animal reproduction; Bovino de leite - parto - intervalo; Bovino de leite - producao - eficiencia; Bovino de leite - reproducao - manejo; Dairy cattle; Eficiência animal; Gado de leite; Gado leiteiro; Management; Manejo; Manejo animal; Reprodução animal; Reproductive performance. |
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Categoria do assunto: |
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Marc: |
LEADER 01602nam a2200289 a 4500
001 1013878
005 2020-11-16
008 1991 bl uuuu u0uu1 u #d
100 1 $aFERREIRA, A. de M.
245 $aManejo reprodutivo e sua importância na eficiência da atividade leiteira.
260 $aCoronel Pacheco : EMBRAPA-CNPGL$c1991
300 $a47 p.
490 $a(EMBRAPA-CNPGL. Documentos, 46).
520 $aEste Documento e parte integrante da "CAMPANHA NACIONAL DE AUMENTO DA PRODUTIVIDADE EM REBANHOS LEITEIROS ATRAVÉS DO ENCURTAMENTO DO INTERVALO ENTRE PARTOS", recentemente lançada pelo Centro Nacional de Pesquisa de Gado de Leite (CNPGL) - EMBRAPA. A meta dessa Campanha e elevar a produção anual de leite no pais em cerca de 50%, independente de melhoria genética, apenas com melhor aproveitamento do potencial já existente, o que se consegue concentrando esforços no sentido de reduzir o intervalo entre partos de 18 a 20 meses para próximo de 12 a 14 meses. O melhoramento genético poderá ser introduzido nas poucas fazendas já com condições, ou, numa segunda etapa, nas fazendas que teriam primeiro de se estruturar.
653 $aAnimal reproduction
653 $aBovino de leite - parto - intervalo
653 $aBovino de leite - producao - eficiencia
653 $aBovino de leite - reproducao - manejo
653 $aDairy cattle
653 $aEficiência animal
653 $aGado de leite
653 $aGado leiteiro
653 $aManagement
653 $aManejo
653 $aManejo animal
653 $aReprodução animal
653 $aReproductive performance
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Registro original: |
Biblioteca Rui Tendinha (BRT) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Status |
Fechar
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
15/05/2017 |
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Data da última atualização: |
28/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
GUARÇONI M., A.; SOBREIRA, F. M. |
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Afiliação: |
Andre Guarçoni Martins, Incaper; Fabrício Moreira Sobreira, Instituto Federal Catarinense. |
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Título: |
Classical methods and calculation algorithms for determining lime requirements. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo [online], v. 41, 2017. |
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DOI: |
http://dx.doi.org/10.1590/18069657rbcs20160069 |
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Idioma: |
Inglês |
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Conteúdo: |
The methods developed for determination of lime requirements (LR) are based on widely accepted principles. However, the formulas used for calculation have evolved little over recent decades, and in some cases there are indications of their inadequacy. The aim of this study was to compare the lime requirements calculated by three classic formulas and three algorithms, defining those most appropriate for supplying Ca and Mg to coffee plants and the smaller possibility of causing overliming. The database used contained 600 soil samples, which were collected in coffee plantings. The LR was estimated by the methods of base saturation, neutralization of Al3+, and elevation of Ca2+ and Mg2+ contents (two formulas) and by the three calculation algorithms. Averages of the lime requirements were compared, determining the frequency distribution of the 600 lime requirements (LR) estimated through each calculation method. In soils with low cation exchange capacity at pH 7, the base saturation method may fail to adequately supply the plants with Ca and Mg in many situations, while the method of Al3+ neutralization and elevation of Ca2+ and Mg2+ contents can result in the calculation of application rates that will increase the pH above the suitable range. Among the methods studied for calculating lime requirements, the algorithm that predicts reaching a defined base saturation, with adequate Ca and Mg supply and the maximum application rate limited to the H+Al value, proved to be the most efficient calculation method, and it can be recommended for use in numerous crops conditions. MenosThe methods developed for determination of lime requirements (LR) are based on widely accepted principles. However, the formulas used for calculation have evolved little over recent decades, and in some cases there are indications of their inadequacy. The aim of this study was to compare the lime requirements calculated by three classic formulas and three algorithms, defining those most appropriate for supplying Ca and Mg to coffee plants and the smaller possibility of causing overliming. The database used contained 600 soil samples, which were collected in coffee plantings. The LR was estimated by the methods of base saturation, neutralization of Al3+, and elevation of Ca2+ and Mg2+ contents (two formulas) and by the three calculation algorithms. Averages of the lime requirements were compared, determining the frequency distribution of the 600 lime requirements (LR) estimated through each calculation method. In soils with low cation exchange capacity at pH 7, the base saturation method may fail to adequately supply the plants with Ca and Mg in many situations, while the method of Al3+ neutralization and elevation of Ca2+ and Mg2+ contents can result in the calculation of application rates that will increase the pH above the suitable range. Among the methods studied for calculating lime requirements, the algorithm that predicts reaching a defined base saturation, with adequate Ca and Mg supply and the maximum application rate limited to the H+Al value, proved to be the most ... Mostrar Tudo |
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Thesaurus NAL: |
Calcium; Deficiency; Magnesium; Overliming; PH. |
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Categoria do assunto: |
-- |
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URL: |
http://biblioteca.incaper.es.gov.br/digital/bitstream/item/2703/1/BRT-classical-methods-and-calculation-algorithms-for-determining-lime-requirements.pdf
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Marc: |
LEADER 02205naa a2200205 a 4500
001 1015010
005 2017-09-28
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/18069657rbcs20160069$2DOI
100 1 $aGUARÇONI M., A.
245 $aClassical methods and calculation algorithms for determining lime requirements.$h[electronic resource]
260 $c2017
520 $aThe methods developed for determination of lime requirements (LR) are based on widely accepted principles. However, the formulas used for calculation have evolved little over recent decades, and in some cases there are indications of their inadequacy. The aim of this study was to compare the lime requirements calculated by three classic formulas and three algorithms, defining those most appropriate for supplying Ca and Mg to coffee plants and the smaller possibility of causing overliming. The database used contained 600 soil samples, which were collected in coffee plantings. The LR was estimated by the methods of base saturation, neutralization of Al3+, and elevation of Ca2+ and Mg2+ contents (two formulas) and by the three calculation algorithms. Averages of the lime requirements were compared, determining the frequency distribution of the 600 lime requirements (LR) estimated through each calculation method. In soils with low cation exchange capacity at pH 7, the base saturation method may fail to adequately supply the plants with Ca and Mg in many situations, while the method of Al3+ neutralization and elevation of Ca2+ and Mg2+ contents can result in the calculation of application rates that will increase the pH above the suitable range. Among the methods studied for calculating lime requirements, the algorithm that predicts reaching a defined base saturation, with adequate Ca and Mg supply and the maximum application rate limited to the H+Al value, proved to be the most efficient calculation method, and it can be recommended for use in numerous crops conditions.
650 $aCalcium
650 $aDeficiency
650 $aMagnesium
650 $aOverliming
650 $aPH
700 1 $aSOBREIRA, F. M.
773 $tRevista Brasileira de Ciência do Solo [online]$gv. 41, 2017.
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