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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
19/09/2017 |
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Data da última atualização: |
19/09/2017 |
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Autoria: |
MEYER, J. H.; LOFGREEN, G. P. |
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Título: |
Evaluation of alfalfa hay by chemical analyses. |
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Ano de publicação: |
1959 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 18, n. 4, p. 1233-1242, Nov. 1959. |
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DOI: |
10.2527/jas1959.1841233x |
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Idioma: |
Inglês |
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Conteúdo: |
A method has been proposed for a critical evaluation of alfalfa hay quality by the use of chemical analysis. A modification of the crude fiber method was made so that the remaining ash, which was shown to be largely silica, was included in the crude fiber. A study of regression equations relating total digestible nutrients (TDN) and digestible protein to lignin, crude fiber, ?crude fiber plus silica?, and protein revealed that the modified crude fiber was most satisfactory for predicting both TDN and digestible protein. Therefore, determination of dry matter and ?crude fiber plus silica? will allow the prediction of TDN and digestible protein content. Studies of hay sampling devices and variation in composition of hay suggest that core samples ?-inch by 18-inch from 19 bales of hay in a population will provide a representative sample of that lot of hay for chemical analysis so that 95% of the time the predicted TDN will be within one percentage unit. A table of constants is presented which allows the monetary value of alfalfa hay to be calculated relative to the price of barley and cottonseed meal depending on the crude fiber content of the alfalfa hay. |
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Thesagro: |
Medicago Sativa. |
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Thesaurus Nal: |
Chemical composition; Hay. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01672naa a2200181 a 4500
001 2075888
005 2017-09-19
008 1959 bl uuuu u00u1 u #d
024 7 $a10.2527/jas1959.1841233x$2DOI
100 1 $aMEYER, J. H.
245 $aEvaluation of alfalfa hay by chemical analyses.
260 $c1959
520 $aA method has been proposed for a critical evaluation of alfalfa hay quality by the use of chemical analysis. A modification of the crude fiber method was made so that the remaining ash, which was shown to be largely silica, was included in the crude fiber. A study of regression equations relating total digestible nutrients (TDN) and digestible protein to lignin, crude fiber, ?crude fiber plus silica?, and protein revealed that the modified crude fiber was most satisfactory for predicting both TDN and digestible protein. Therefore, determination of dry matter and ?crude fiber plus silica? will allow the prediction of TDN and digestible protein content. Studies of hay sampling devices and variation in composition of hay suggest that core samples ?-inch by 18-inch from 19 bales of hay in a population will provide a representative sample of that lot of hay for chemical analysis so that 95% of the time the predicted TDN will be within one percentage unit. A table of constants is presented which allows the monetary value of alfalfa hay to be calculated relative to the price of barley and cottonseed meal depending on the crude fiber content of the alfalfa hay.
650 $aChemical composition
650 $aHay
650 $aMedicago Sativa
700 1 $aLOFGREEN, G. P.
773 $tJournal of Animal Science$gv. 18, n. 4, p. 1233-1242, Nov. 1959.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
29/10/2018 |
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Data da última atualização: |
14/11/2018 |
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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: |
CASTRO, A.; BATISTA, N. da S.; LATAWIEC, E.; RODRIGUES, A.; STRASSBURG, B.; SILVA, D.; ARAUJO, E. da S.; MORAES, L. F. D. de; GUERRA, J. G. M.; GALVÃO, D.; PINTO, H. A.; MENDES, M.; SANTOS, J. S. dos; RANGEL, M. C.; FIGUEIREDO, M.; CORNELISSEN, G.; HALE, S. |
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Afiliação: |
EDNALDO DA SILVA ARAUJO, CNPAB; LUIZ FERNANDO DUARTE DE MORAES, CNPAB; JOSE GUILHERME MARINHO GUERRA, CNPAB; International Institute for Sustainabilit, RJ. |
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Título: |
The effects of gliricidia-Derived biochar on dequential maize and bean farming. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Sustainability, v. 10, n. 579, p. 2-15, 2018. |
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ISSN: |
2071-1050 |
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DOI: |
10.3390/su10030578 www.mdpi |
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Idioma: |
Português |
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Conteúdo: |
The addition of biochar to soils can improve soil fertility and increase agricultural productivity. We carried out a field experiment in which biochar produced from Gliricidia sepium (Jacq.) Kunth exWalp. was added to low-fertility Brazilian planosol and tested to increase the yield of maize (Zea mays) and snap beans (Phaseolus vulgaris L.) in sequential, organic cultivation. Biochar was applied at a 15 t/ha rate, combined or not with Azospirillum Brasiliense inoculation and organic fertilizer (Bokashi). The application of biochar resulted in an increase in soil pH and of the content of macronutrients such as phosphorus and potassium. Contrary to evidence from elsewhere, biochar had a limited effect on increasing maize yield. In the case of beans, when combined with fertilizer, biochar increased the production of beans pods and biomass, but the significant increase was observed only for inoculation. Beans are the principal component of Brazilian diet and increasing productivity of beans is of upmost importance for the poorest in Brazil, and in other tropical countries. |
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Palavras-Chave: |
Brazilian productivity; Maize and beans; Smallholder farming. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02123naa a2200373 a 4500
001 2098367
005 2018-11-14
008 2018 bl uuuu u00u1 u #d
022 $a2071-1050
024 7 $a10.3390/su10030578 www.mdpi$2DOI
100 1 $aCASTRO, A.
245 $aThe effects of gliricidia-Derived biochar on dequential maize and bean farming.$h[electronic resource]
260 $c2018
520 $aThe addition of biochar to soils can improve soil fertility and increase agricultural productivity. We carried out a field experiment in which biochar produced from Gliricidia sepium (Jacq.) Kunth exWalp. was added to low-fertility Brazilian planosol and tested to increase the yield of maize (Zea mays) and snap beans (Phaseolus vulgaris L.) in sequential, organic cultivation. Biochar was applied at a 15 t/ha rate, combined or not with Azospirillum Brasiliense inoculation and organic fertilizer (Bokashi). The application of biochar resulted in an increase in soil pH and of the content of macronutrients such as phosphorus and potassium. Contrary to evidence from elsewhere, biochar had a limited effect on increasing maize yield. In the case of beans, when combined with fertilizer, biochar increased the production of beans pods and biomass, but the significant increase was observed only for inoculation. Beans are the principal component of Brazilian diet and increasing productivity of beans is of upmost importance for the poorest in Brazil, and in other tropical countries.
653 $aBrazilian productivity
653 $aMaize and beans
653 $aSmallholder farming
700 1 $aBATISTA, N. da S.
700 1 $aLATAWIEC, E.
700 1 $aRODRIGUES, A.
700 1 $aSTRASSBURG, B.
700 1 $aSILVA, D.
700 1 $aARAUJO, E. da S.
700 1 $aMORAES, L. F. D. de
700 1 $aGUERRA, J. G. M.
700 1 $aGALVÃO, D.
700 1 $aPINTO, H. A.
700 1 $aMENDES, M.
700 1 $aSANTOS, J. S. dos
700 1 $aRANGEL, M. C.
700 1 $aFIGUEIREDO, M.
700 1 $aCORNELISSEN, G.
700 1 $aHALE, S.
773 $tSustainability$gv. 10, n. 579, p. 2-15, 2018.
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Embrapa Agrobiologia (CNPAB) |
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