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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Solos. |
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Data corrente: |
30/06/1992 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
NOVAES, R. F. de. |
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Título: |
Phosphorus supplying capacity of previously heavily fertilized soils. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Raleigh: Faculty of North Carolina State University at Raleigh, 1977. |
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Páginas: |
153p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado. |
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Conteúdo: |
In this study, Ap horizon material from four Ultisols from the Coastal Plain province, Goldsboro, Wagram, Portsmouth, and Norfolk, and one Piedomont Ultisol, Georgeville, all of which had high residual phosphorus with cropping on different soil phosphorus parameters was studied. The following parameters were measured initially and after each crop grown on the soils: a) the available soil phosphorus with N.C., Bray 1, and Olsen extractants; b) the quantity factor as amounts of the various forms of inorganic soil phosphorus; c) the intensity factor as phosphate potential; d) the capacity factor as phosphate buffering capacaty; and e) the Langmuir and Freundlich phosphorus adsorption isotherms. The kinetics of phosphorus adsorption by the five soils before cropping was also studied. After the soils were cropped for nine consecutive times, phosphorus was added at five levels to determine how much phosphorus had to be added to bring the available phosphorus back to the original levels. From the results the following conclusions can be drawn. The depletion curves of the available soil phosphorus with N.C., Bray 1, and Olsen extractants as related to phosphorus uptake by plants followed linear relationships for all the soils. The slopes for the Goldsboro, Norfolk, and Wagram soils were similar. These slopes for the N.C. and Bray 1 extractants were significantly correlated with the soil capacity factors which permitted the derivation of equations to predict the slope values from the capacity factor values. The ............ MenosIn this study, Ap horizon material from four Ultisols from the Coastal Plain province, Goldsboro, Wagram, Portsmouth, and Norfolk, and one Piedomont Ultisol, Georgeville, all of which had high residual phosphorus with cropping on different soil phosphorus parameters was studied. The following parameters were measured initially and after each crop grown on the soils: a) the available soil phosphorus with N.C., Bray 1, and Olsen extractants; b) the quantity factor as amounts of the various forms of inorganic soil phosphorus; c) the intensity factor as phosphate potential; d) the capacity factor as phosphate buffering capacaty; and e) the Langmuir and Freundlich phosphorus adsorption isotherms. The kinetics of phosphorus adsorption by the five soils before cropping was also studied. After the soils were cropped for nine consecutive times, phosphorus was added at five levels to determine how much phosphorus had to be added to bring the available phosphorus back to the original levels. From the results the following conclusions can be drawn. The depletion curves of the available soil phosphorus with N.C., Bray 1, and Olsen extractants as related to phosphorus uptake by plants followed linear relationships for all the soils. The slopes for the Goldsboro, Norfolk, and Wagram soils were similar. These slopes for the N.C. and Bray 1 extractants were significantly correlated with the soil capacity factors which permitted the derivation of equations to predict the slope values from the... Mostrar Tudo |
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Palavras-Chave: |
Capacidade; Solos. |
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Thesagro: |
Fertilidade; Fertilizante; Fósforo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02068nam a2200193 a 4500
001 1331133
005 2002-11-22
008 1977 bl uuuu m 00u1 u #d
100 1 $aNOVAES, R. F. de
245 $aPhosphorus supplying capacity of previously heavily fertilized soils.
260 $aRaleigh: Faculty of North Carolina State University at Raleigh$c1977
300 $a153p.
500 $aTese Doutorado.
520 $aIn this study, Ap horizon material from four Ultisols from the Coastal Plain province, Goldsboro, Wagram, Portsmouth, and Norfolk, and one Piedomont Ultisol, Georgeville, all of which had high residual phosphorus with cropping on different soil phosphorus parameters was studied. The following parameters were measured initially and after each crop grown on the soils: a) the available soil phosphorus with N.C., Bray 1, and Olsen extractants; b) the quantity factor as amounts of the various forms of inorganic soil phosphorus; c) the intensity factor as phosphate potential; d) the capacity factor as phosphate buffering capacaty; and e) the Langmuir and Freundlich phosphorus adsorption isotherms. The kinetics of phosphorus adsorption by the five soils before cropping was also studied. After the soils were cropped for nine consecutive times, phosphorus was added at five levels to determine how much phosphorus had to be added to bring the available phosphorus back to the original levels. From the results the following conclusions can be drawn. The depletion curves of the available soil phosphorus with N.C., Bray 1, and Olsen extractants as related to phosphorus uptake by plants followed linear relationships for all the soils. The slopes for the Goldsboro, Norfolk, and Wagram soils were similar. These slopes for the N.C. and Bray 1 extractants were significantly correlated with the soil capacity factors which permitted the derivation of equations to predict the slope values from the capacity factor values. The ............
650 $aFertilidade
650 $aFertilizante
650 $aFósforo
653 $aCapacidade
653 $aSolos
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Registro original: |
Embrapa Solos (CNPS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
25/11/2021 |
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Data da última atualização: |
10/05/2022 |
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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: |
HILSDORF, A. W. S.; HALLERMAN, E.; VALLADÃO, G. M. R.; ZAMINHAN-HASSEMER, M.; HASHIMOTO, D. T.; DAIRIKI, J. K.; TAKAHASHI, L. S.; ALBERGARIA, F. C.; GOMES, M. E. de S.; VENTURIERI, R. L. L.; MOREIRA, R. G.; CYRINO, J. E. P. |
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Afiliação: |
ALEXANDRE WAGNER SILVA HILSDORF, Universidade de Mogi das Cruzes; ERIC HALLERMAN, Department of Fish and Wildlife Conservation, Virginia Polytechnic Institute and State University Blacksburg; GUSTAVO MORAES RAMOS VALLADÃO, Universidade Nilton Lins; MICHELI ZAMINHAN-HASSEMER, Universidade de Mogi das Cruzes; DIOGO TERUO HASHIMOTO, Centro de Aquicultura da Universidade do Estado de São Paulo; JONY KOJI DAIRIKI, CPAA; LEONARDO SUSUMU TAKAHASHI, Centro de Aquicultura da Universidade do Estado de São Paulo; FRANCIELLY CORRÊA ALBERGARIA, UFV; MARIA EMÍLIA DE SOUSA GOMES, UFV; ROSSANA LUIZA LEITE VENTURIERI, Original Amazon Assessoria Empresarial Ltda.; RENATA GUIMARÃES MOREIRA, Universidade de São Paulo; JOSÉ EURICO POSSEBON CYRINO, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo. |
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Título: |
The farming and husbandry of Colossoma macropomum: from Amazonian waters to sustainable production. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Reviews in Aquaculture, v. 14, n. 2, p. 993-1027, Mar. 2022. |
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DOI: |
10.1111/raq.12638 |
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Idioma: |
Inglês |
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Conteúdo: |
Within the rich diversity of South American freshwater fish, Colossoma macropomum (Characiformes: Serrasalmidae), known as tambaqui, cachama or blackfin pacu, can reach 30 kg, is a traditional product in regional fish markets and has drawn the attention of fish farmers since the 1930s. |
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Thesagro: |
Tambaqui. |
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Thesaurus NAL: |
Aquaculture; Characiformes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01190naa a2200301 a 4500
001 2136607
005 2022-05-10
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1111/raq.12638$2DOI
100 1 $aHILSDORF, A. W. S.
245 $aThe farming and husbandry of Colossoma macropomum$bfrom Amazonian waters to sustainable production.$h[electronic resource]
260 $c2022
520 $aWithin the rich diversity of South American freshwater fish, Colossoma macropomum (Characiformes: Serrasalmidae), known as tambaqui, cachama or blackfin pacu, can reach 30 kg, is a traditional product in regional fish markets and has drawn the attention of fish farmers since the 1930s.
650 $aAquaculture
650 $aCharaciformes
650 $aTambaqui
700 1 $aHALLERMAN, E.
700 1 $aVALLADÃO, G. M. R.
700 1 $aZAMINHAN-HASSEMER, M.
700 1 $aHASHIMOTO, D. T.
700 1 $aDAIRIKI, J. K.
700 1 $aTAKAHASHI, L. S.
700 1 $aALBERGARIA, F. C.
700 1 $aGOMES, M. E. de S.
700 1 $aVENTURIERI, R. L. L.
700 1 $aMOREIRA, R. G.
700 1 $aCYRINO, J. E. P.
773 $tReviews in Aquaculture$gv. 14, n. 2, p. 993-1027, Mar. 2022.
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Embrapa Amazônia Ocidental (CPAA) |
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