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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
10/08/2000 |
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Data da última atualização: |
22/08/2012 |
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Autoria: |
DINKELMEYER, H. |
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Título: |
Stickstoffdynamik und Stickstoffbilanzierung in einem gedungten Polykultursystem mit perennen tropischen Nutzpflanzen in Zentralamazonien. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Bayreuth: Universitat Bayreuth, 2000. |
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Páginas: |
69 p. |
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Idioma: |
Alemão |
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Notas: |
Diplomarbeit. |
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Conteúdo: |
Study carried out on a highly weathered and aggregated Xanthic Ferralsol with a low cation exchange capacity on the gerra firme near Manaus-AM (Brasil) to investigate the nitrogen dynamics and the fate of applied nitrogen fertilizer in the soil-plnat system of a mixed cropping system consisting of Bactris gasipaes Kunth. (peachpalm, arecaceae), Theobroma grandiflorum (Willd. ex Spreng.) K. Schu. (cupuacu, Sterculiaceae), Bertholletia excelsa Humb. & Bpnpl. (Brazil nut, Lecythidaceae) and Bixa orellana L. (annato, Bixaceae). Annato, cupuacu and peachpalm seemed to take up more than 90% of the incorporated nitrogen fertilizer under their oyn canopy. However, Brazil nut took up more than 70% of the fertilized nitrogen from the fertilized areas under the canopies of the neighboring trees (peachpalm: 40%, annato: 36%, cupuacu: 6%). Furthermore, peachpalm and Brazil nut were better able than the other two trees in reducing nutrient leaching due to their deep root system. They took up nitrogen from the subsoil nitrogen pool, which was found under all investigated species as a result of leached fertilizer. |
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Palavras-Chave: |
Acid soil; Agrofloresta; Amazonas; Brasil; Manaus; Urucu. |
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Thesagro: |
Bactris Gasipaes; Bertholletia Excelsa; Bixa Orellana; Castanha do Para; Cultivo Multiplo; Cupuaçu; Floresta Tropical Úmida; Nitrogênio; Pupunha; Solo Ácido; Theobroma Grandiflorum. |
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Thesaurus Nal: |
agroforestry; multiple cropping; nitrogen; tropical rain forests. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02171nam a2200385 a 4500
001 1669531
005 2012-08-22
008 2000 bl uuuu m 00u1 u #d
100 1 $aDINKELMEYER, H.
245 $aStickstoffdynamik und Stickstoffbilanzierung in einem gedungten Polykultursystem mit perennen tropischen Nutzpflanzen in Zentralamazonien.
260 $aBayreuth: Universitat Bayreuth$c2000
300 $a69 p.
500 $aDiplomarbeit.
520 $aStudy carried out on a highly weathered and aggregated Xanthic Ferralsol with a low cation exchange capacity on the gerra firme near Manaus-AM (Brasil) to investigate the nitrogen dynamics and the fate of applied nitrogen fertilizer in the soil-plnat system of a mixed cropping system consisting of Bactris gasipaes Kunth. (peachpalm, arecaceae), Theobroma grandiflorum (Willd. ex Spreng.) K. Schu. (cupuacu, Sterculiaceae), Bertholletia excelsa Humb. & Bpnpl. (Brazil nut, Lecythidaceae) and Bixa orellana L. (annato, Bixaceae). Annato, cupuacu and peachpalm seemed to take up more than 90% of the incorporated nitrogen fertilizer under their oyn canopy. However, Brazil nut took up more than 70% of the fertilized nitrogen from the fertilized areas under the canopies of the neighboring trees (peachpalm: 40%, annato: 36%, cupuacu: 6%). Furthermore, peachpalm and Brazil nut were better able than the other two trees in reducing nutrient leaching due to their deep root system. They took up nitrogen from the subsoil nitrogen pool, which was found under all investigated species as a result of leached fertilizer.
650 $aagroforestry
650 $amultiple cropping
650 $anitrogen
650 $atropical rain forests
650 $aBactris Gasipaes
650 $aBertholletia Excelsa
650 $aBixa Orellana
650 $aCastanha do Para
650 $aCultivo Multiplo
650 $aCupuaçu
650 $aFloresta Tropical Úmida
650 $aNitrogênio
650 $aPupunha
650 $aSolo Ácido
650 $aTheobroma Grandiflorum
653 $aAcid soil
653 $aAgrofloresta
653 $aAmazonas
653 $aBrasil
653 $aManaus
653 $aUrucu
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
10/08/1999 |
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Data da última atualização: |
28/03/2017 |
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Autoria: |
MELO, M. I. V.; SERENO, J. R. B.; HENRY, M.; CASSALI, G. D. |
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Afiliação: |
UFMG/EV (Belo Horizonte, MG). UFMG/ICB (Belo Horizonte, MG). EMBRAPA Pantanal (Corumba, MS. |
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Título: |
Peripuberal sexual development of pantaneiro horse. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Theriogenology, v.50, p.727-737, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
Pantaneiro horses are a breed native to flood plains of Brazil, where they thrive with little fuman interference. The aims of this study were to characterize age-associated changes in testicular size, serum testosterone and sexual behavior and to determine age at puberty as well as to evaluate daily sperm production in the Pantaneiro stallion. After weaning the males were kept in bachelor groups away from the females, in a separated area in the natural environment of flood plains. Infantile period ended at approximately 14.4 mo of age. Sexual interst and breeding capability first appeared between the ages of 15.6 to 27.5 mo. The transition from prepuberal to postpuberal histological stage, occurred at approximately 27.8 mo of age. All animals were in the postpuberal period at 38.5 mo of age. Daily sperm production estimated with testicle homogenate, at 38.5 mo of age was low (1.4603 +- 0.48x10 sperm) and serum testosterone levels were similar to adult levels by 27.8 mo. In conclusion the 2 y old Pantaneiro stallions showed full sexual behavior and had adult testosterone levels, but at this age, the stage of development of the seminuiferous epithelium was variable and the efficiency of sperm production was still low. |
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Palavras-Chave: |
Cavalo pantaneiro; Pantaneiro horse; Production. |
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Thesagro: |
Produção; Reprodução. |
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Thesaurus NAL: |
reproduction; testosterone. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01847naa a2200241 a 4500
001 1798443
005 2017-03-28
008 1998 bl --- 0-- u #d
100 1 $aMELO, M. I. V.
245 $aPeripuberal sexual development of pantaneiro horse.
260 $c1998
520 $aPantaneiro horses are a breed native to flood plains of Brazil, where they thrive with little fuman interference. The aims of this study were to characterize age-associated changes in testicular size, serum testosterone and sexual behavior and to determine age at puberty as well as to evaluate daily sperm production in the Pantaneiro stallion. After weaning the males were kept in bachelor groups away from the females, in a separated area in the natural environment of flood plains. Infantile period ended at approximately 14.4 mo of age. Sexual interst and breeding capability first appeared between the ages of 15.6 to 27.5 mo. The transition from prepuberal to postpuberal histological stage, occurred at approximately 27.8 mo of age. All animals were in the postpuberal period at 38.5 mo of age. Daily sperm production estimated with testicle homogenate, at 38.5 mo of age was low (1.4603 +- 0.48x10 sperm) and serum testosterone levels were similar to adult levels by 27.8 mo. In conclusion the 2 y old Pantaneiro stallions showed full sexual behavior and had adult testosterone levels, but at this age, the stage of development of the seminuiferous epithelium was variable and the efficiency of sperm production was still low.
650 $areproduction
650 $atestosterone
650 $aProdução
650 $aReprodução
653 $aCavalo pantaneiro
653 $aPantaneiro horse
653 $aProduction
700 1 $aSERENO, J. R. B.
700 1 $aHENRY, M.
700 1 $aCASSALI, G. D.
773 $tTheriogenology$gv.50, p.727-737, 1998.
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