| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Algodão; Embrapa Arroz e Feijão. |
|
Data corrente: |
24/03/2011 |
|
Data da última atualização: |
25/07/2011 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SANT'ANA, E. V. P.; SANTOS, A. B. dos; SILVEIRA, P. M. da. |
|
Afiliação: |
EDVALDO VIEIRA PACHECO SANT'ANA, INSTITUTO FEDERAL DE EDUCAÇÃO, Palmas-TO; ALBERTO BAETA DOS SANTOS, CNPAF; PEDRO MARQUES DA SILVEIRA, CNPAF. |
|
Título: |
Eficiência de uso de nitrogênio em cobertura pelo feijoeiro irrigado. |
|
Ano de publicação: |
2011 |
|
Fonte/Imprenta: |
Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 15, n. 5, p. 458-461, 2011. |
|
Idioma: |
Português |
|
Conteúdo: |
Entre as técnicas de manejo necessárias para atingir alto potencial produtivo nos sistemas agrícolas irrigados, está a adubação nitrogenada. O objetivo deste trabalho foi avaliar os efeitos de doses de nitrogênio aplicadas em cobertura sobre a fitomassa e a eficiência de uso do nutriente pela cultivar BRS Horizonte de feijoeiro. O experimento foi conduzido na Embrapa Arroz e Feijão, em um Latossolo Vermelho distrófico, em delineamento experimental de blocos ao acaso, com quatro repetições e cinco doses de nitrogênio, 0, 30, 60, 120 e 240 kg ha-1, na forma de uréia, aplicadas em cobertura metade aos dez dias após a emergência (DAE) e a outra metade aos 17 DAE. A fitomassa no florescimento do feijoeiro relacionou-se linearmente com as doses de N aplicadas em cobertura, ao passo que a fitomassa na colheita apresentou resposta quadrática. As relações entre o índice de colheita de grãos e o índice de colheita de N com as doses de N foram quadráticas e os índices máximos foram estimados com a dose de 140 kg ha-1 de N. A eficiência de uso de nitrogênio pelo feijoeiro variou com as doses de N aplicadas e com o tipo de eficiência calculada, enquanto as eficiências agronômica e fisiológica diminuíram com o incremento da dose. |
|
Palavras-Chave: |
Eficiência agronômica; Eficiência fisiológica. |
|
Thesagro: |
Feijão; Matéria Seca; Nitrogênio; Phaseolus Vulgaris. |
|
Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/31063/1/v15.pdf
|
|
Marc: |
LEADER 01959naa a2200217 a 4500
001 1882692
005 2011-07-25
008 2011 bl uuuu u00u1 u #d
100 1 $aSANT'ANA, E. V. P.
245 $aEficiência de uso de nitrogênio em cobertura pelo feijoeiro irrigado.$h[electronic resource]
260 $c2011
520 $aEntre as técnicas de manejo necessárias para atingir alto potencial produtivo nos sistemas agrícolas irrigados, está a adubação nitrogenada. O objetivo deste trabalho foi avaliar os efeitos de doses de nitrogênio aplicadas em cobertura sobre a fitomassa e a eficiência de uso do nutriente pela cultivar BRS Horizonte de feijoeiro. O experimento foi conduzido na Embrapa Arroz e Feijão, em um Latossolo Vermelho distrófico, em delineamento experimental de blocos ao acaso, com quatro repetições e cinco doses de nitrogênio, 0, 30, 60, 120 e 240 kg ha-1, na forma de uréia, aplicadas em cobertura metade aos dez dias após a emergência (DAE) e a outra metade aos 17 DAE. A fitomassa no florescimento do feijoeiro relacionou-se linearmente com as doses de N aplicadas em cobertura, ao passo que a fitomassa na colheita apresentou resposta quadrática. As relações entre o índice de colheita de grãos e o índice de colheita de N com as doses de N foram quadráticas e os índices máximos foram estimados com a dose de 140 kg ha-1 de N. A eficiência de uso de nitrogênio pelo feijoeiro variou com as doses de N aplicadas e com o tipo de eficiência calculada, enquanto as eficiências agronômica e fisiológica diminuíram com o incremento da dose.
650 $aFeijão
650 $aMatéria Seca
650 $aNitrogênio
650 $aPhaseolus Vulgaris
653 $aEficiência agronômica
653 $aEficiência fisiológica
700 1 $aSANTOS, A. B. dos
700 1 $aSILVEIRA, P. M. da
773 $tRevista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande$gv. 15, n. 5, p. 458-461, 2011.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
08/10/2008 |
|
Data da última atualização: |
08/10/2008 |
|
Autoria: |
PI?L, V.; ZEITHAML, J.; SKLENIÈKA, P. |
|
Título: |
Earthworm assemblages in a forest-arable field ecotone and their relations with soil properties. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Earthworm assemblages and their relationships with selected physical and chemical parameters
of soil were assessed at five sites representing forest-field ecotone. The sites were located in
Central Bohemia, Czech Republic and they differed in the type of crop rotation used. At each
site, earthworm sampling were carried out in seven parallel rows perpendicular to the transect
from the oak forest to the centre of the field in spring and autumn 2001-2003. Individual rows
were located: in the forest (5 m from the edge), in the forest edge, and in the field in distances of
5, 10, 25, 50 and 100 m from the edge of the forest. Six samples (each 625 cm2 of area and 30
cm in depth) were taken in each row. Digging and hand sorting of soil samples, followed by
formalin application was used for the extraction of earthworms.
Per site means of density and biomass ranged from 46.8 - 86.9 ind.m-2 and 23.38 - 43.50 g.m-
2 respectively. The position within the transect affected significantly the density and biomass of
earthworm populations. In general, both parameters were the lowest in forest interior, increased
markedly in the forest edge, decreased again in the distance of 5 and/or 10 metres from the
forest edge and then continuously increased with increasing distance from the field boundary.
The same pattern was observed at all sites and years of the study.
Eleven species and subspecies of earthworms were identified, among which Aporrectodea
caliginosa predominated (85%). Per site species number varied from 7 to 10. The highest
number of species was found in the forest edge and in the field boundary. There were differences
between individual species in their distribution across the transect: endogeic Aporrectodea
caliginosa and Proctodrilus antipai preferred arable soil, while epigeic (Dendrobaena octaedra,
Lumbricus rubellus) and anecic (Lumbricus terrestris) earthworms showed strong affinity to the
forest edge.
Both density and biomass of earthworms were strongly correlated with soil organic matter content
and with the porosity of soil and water infiltration rate. MenosEarthworm assemblages and their relationships with selected physical and chemical parameters
of soil were assessed at five sites representing forest-field ecotone. The sites were located in
Central Bohemia, Czech Republic and they differed in the type of crop rotation used. At each
site, earthworm sampling were carried out in seven parallel rows perpendicular to the transect
from the oak forest to the centre of the field in spring and autumn 2001-2003. Individual rows
were located: in the forest (5 m from the edge), in the forest edge, and in the field in distances of
5, 10, 25, 50 and 100 m from the edge of the forest. Six samples (each 625 cm2 of area and 30
cm in depth) were taken in each row. Digging and hand sorting of soil samples, followed by
formalin application was used for the extraction of earthworms.
Per site means of density and biomass ranged from 46.8 - 86.9 ind.m-2 and 23.38 - 43.50 g.m-
2 respectively. The position within the transect affected significantly the density and biomass of
earthworm populations. In general, both parameters were the lowest in forest interior, increased
markedly in the forest edge, decreased again in the distance of 5 and/or 10 metres from the
forest edge and then continuously increased with increasing distance from the field boundary.
The same pattern was observed at all sites and years of the study.
Eleven species and subspecies of earthworms were identified, among which Aporrectodea
caliginosa predominated (85%). Per site species... Mostrar Tudo |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02779naa a2200145 a 4500
001 1315095
005 2008-10-08
008 2008 bl uuuu u00u1 u #d
100 1 $aPI?L, V.
245 $aEarthworm assemblages in a forest-arable field ecotone and their relations with soil properties.
260 $c2008
520 $aEarthworm assemblages and their relationships with selected physical and chemical parameters of soil were assessed at five sites representing forest-field ecotone. The sites were located in Central Bohemia, Czech Republic and they differed in the type of crop rotation used. At each site, earthworm sampling were carried out in seven parallel rows perpendicular to the transect from the oak forest to the centre of the field in spring and autumn 2001-2003. Individual rows were located: in the forest (5 m from the edge), in the forest edge, and in the field in distances of 5, 10, 25, 50 and 100 m from the edge of the forest. Six samples (each 625 cm2 of area and 30 cm in depth) were taken in each row. Digging and hand sorting of soil samples, followed by formalin application was used for the extraction of earthworms. Per site means of density and biomass ranged from 46.8 - 86.9 ind.m-2 and 23.38 - 43.50 g.m- 2 respectively. The position within the transect affected significantly the density and biomass of earthworm populations. In general, both parameters were the lowest in forest interior, increased markedly in the forest edge, decreased again in the distance of 5 and/or 10 metres from the forest edge and then continuously increased with increasing distance from the field boundary. The same pattern was observed at all sites and years of the study. Eleven species and subspecies of earthworms were identified, among which Aporrectodea caliginosa predominated (85%). Per site species number varied from 7 to 10. The highest number of species was found in the forest edge and in the field boundary. There were differences between individual species in their distribution across the transect: endogeic Aporrectodea caliginosa and Proctodrilus antipai preferred arable soil, while epigeic (Dendrobaena octaedra, Lumbricus rubellus) and anecic (Lumbricus terrestris) earthworms showed strong affinity to the forest edge. Both density and biomass of earthworms were strongly correlated with soil organic matter content and with the porosity of soil and water infiltration rate.
700 1 $aZEITHAML, J.
700 1 $aSKLENIÈKA, P.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
|
|
| Registros recuperados : 1 | |
| Registros recuperados : 1 | |
|
|
|
