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| Registros recuperados : 133 | |
| Registros recuperados : 133 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
16/02/2000 |
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Data da última atualização: |
17/08/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
LEHMANN, J.; SILVA JUNIOR, J. P. da; TRUJILO, L. |
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Afiliação: |
University of Bayreuth; Embrapa Amazonia Ocidental.; JOSE PEREIRA DA SILVA JUNIOR, CPAA. |
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Título: |
Leguminous cover crops in tropical fruit tree production. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: ISHS CONFERENCE ON FRUIT PRODUCTION IN THE TROPICS AND SUBTROPICS, 2., 1999, Bonn. Book of abstracts... Bonn: ISHS, 1999. p. 9. |
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Idioma: |
Inglês |
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Conteúdo: |
Studies on the effects of pueraria (Pueraria phaseoloides on nutrient availability in fruit tree production (cupuacu, Theobroma grandiflorum, pupunha, Bactris gasipaes, and guarana, Paullinia cupana var. sorbilis) in the humid tropics. Above-ground nitrogen accumulation in pueraria was 8 and 14 times higher in intercropped cupuacu (juice production) and pupunha (palm of heart production), respectively. Biomass production of pueraria was even 18 and 10 times higher in cupuacu and pupunha, respectively. Even without accounting for production, above-ground recovery of applied 15N in pueraria was as high as in cupuacu and four times higher than in pupunha, and led to less leaching of applied 15N and higher 15N contents in the topsoil. Furthermore, the biological nitrogen fixation of pueraria reached values from 9% to 45% depending on the season. As a result, total soil nitrogen contents significantly increased and the light organic matter fraction of the soil was significantly enriched with nitrogen. The amount of transfer, however, was negligible and needs to be increased by appropriate management, e.g., closer tree spacing. For other nutrients than nitrogen which canot be supplied by pueraria from external sources like phosphorus, care has to be taken that the cover crop does not sequester nutrients. Thus, foliar phosphorus contents of guarana (Paullinia cupana; juice production) decreased by 13% if associated with pueraria. In conclusion, research needs are specified in terms of improving services of leguminous cover crops for better fruit tree nutrition. MenosStudies on the effects of pueraria (Pueraria phaseoloides on nutrient availability in fruit tree production (cupuacu, Theobroma grandiflorum, pupunha, Bactris gasipaes, and guarana, Paullinia cupana var. sorbilis) in the humid tropics. Above-ground nitrogen accumulation in pueraria was 8 and 14 times higher in intercropped cupuacu (juice production) and pupunha (palm of heart production), respectively. Biomass production of pueraria was even 18 and 10 times higher in cupuacu and pupunha, respectively. Even without accounting for production, above-ground recovery of applied 15N in pueraria was as high as in cupuacu and four times higher than in pupunha, and led to less leaching of applied 15N and higher 15N contents in the topsoil. Furthermore, the biological nitrogen fixation of pueraria reached values from 9% to 45% depending on the season. As a result, total soil nitrogen contents significantly increased and the light organic matter fraction of the soil was significantly enriched with nitrogen. The amount of transfer, however, was negligible and needs to be increased by appropriate management, e.g., closer tree spacing. For other nutrients than nitrogen which canot be supplied by pueraria from external sources like phosphorus, care has to be taken that the cover crop does not sequester nutrients. Thus, foliar phosphorus contents of guarana (Paullinia cupana; juice production) decreased by 13% if associated with pueraria. In conclusion, research needs are specified in terms... Mostrar Tudo |
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Palavras-Chave: |
Avore frutifera; Fruit; Leguminous; Production. |
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Thesagro: |
Bactris Gasipaes; Cobertura do Solo; Fruta; Guaraná; Leguminosa; Paullinia Cupana; Planta de Cobertura; Produção; Pupunha; Theobroma Grandiflorum. |
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Thesaurus NAL: |
cover crops; fruit trees. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162793/1/Fruit-Production9.pdf
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Marc: |
LEADER 02506nam a2200325 a 4500
001 1668577
005 2017-08-17
008 1999 bl uuuu u00u1 u #d
100 1 $aLEHMANN, J.
245 $aLeguminous cover crops in tropical fruit tree production.
260 $aIn: ISHS CONFERENCE ON FRUIT PRODUCTION IN THE TROPICS AND SUBTROPICS, 2., 1999, Bonn. Book of abstracts... Bonn: ISHS, 1999. p. 9.$c1999
520 $aStudies on the effects of pueraria (Pueraria phaseoloides on nutrient availability in fruit tree production (cupuacu, Theobroma grandiflorum, pupunha, Bactris gasipaes, and guarana, Paullinia cupana var. sorbilis) in the humid tropics. Above-ground nitrogen accumulation in pueraria was 8 and 14 times higher in intercropped cupuacu (juice production) and pupunha (palm of heart production), respectively. Biomass production of pueraria was even 18 and 10 times higher in cupuacu and pupunha, respectively. Even without accounting for production, above-ground recovery of applied 15N in pueraria was as high as in cupuacu and four times higher than in pupunha, and led to less leaching of applied 15N and higher 15N contents in the topsoil. Furthermore, the biological nitrogen fixation of pueraria reached values from 9% to 45% depending on the season. As a result, total soil nitrogen contents significantly increased and the light organic matter fraction of the soil was significantly enriched with nitrogen. The amount of transfer, however, was negligible and needs to be increased by appropriate management, e.g., closer tree spacing. For other nutrients than nitrogen which canot be supplied by pueraria from external sources like phosphorus, care has to be taken that the cover crop does not sequester nutrients. Thus, foliar phosphorus contents of guarana (Paullinia cupana; juice production) decreased by 13% if associated with pueraria. In conclusion, research needs are specified in terms of improving services of leguminous cover crops for better fruit tree nutrition.
650 $acover crops
650 $afruit trees
650 $aBactris Gasipaes
650 $aCobertura do Solo
650 $aFruta
650 $aGuaraná
650 $aLeguminosa
650 $aPaullinia Cupana
650 $aPlanta de Cobertura
650 $aProdução
650 $aPupunha
650 $aTheobroma Grandiflorum
653 $aAvore frutifera
653 $aFruit
653 $aLeguminous
653 $aProduction
700 1 $aSILVA JUNIOR, J. P. da
700 1 $aTRUJILO, L.
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Embrapa Amazônia Ocidental (CPAA) |
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