| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
17/01/2013 |
|
Data da última atualização: |
21/01/2013 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MAEDA, S.; BOGNOLA, I. A. |
|
Afiliação: |
SHIZUO MAEDA, CNPF; ITAMAR ANTONIO BOGNOLA, CNPF. |
|
Título: |
Influência de calagem e adubação fosfatada no crescimento inicial de eucalipto e nos níveis críticos de P. |
|
Ano de publicação: |
2012 |
|
Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 32, n. 72, p. 401-407, out./dez. 2012. |
|
ISSN: |
1983-2605 |
|
DOI: |
10.4336/2012.pfb.32.72.401 |
|
Idioma: |
Português |
|
Conteúdo: |
O efeito da aplicação combinada de calagem e adubação fosfatada nos níveis críticos do solo e da planta em Eucalyptus dunnii foi estudado em condições de vaso. Os tratamentos consistiram na combinação de três níveis de calagem (C0, sem calagem; C1/2, metade da dose para elevar o pH em água a 5,5 pelo método do pH SMP; C1, dose para elevar o pH em água a 5,5 pelo método do pH SMP) e cinco doses de fósforo (0; 50; 150; 300 e 600 mg de P kg-1 de solo). O experimento foi conduzido por 67 dias em casa de vegetação não climatizada, utilizando um Cambissolo Húmico Ta Alumínico Típico. As maiores produções de matéria seca da parte aérea foram observadas no maior nível de calagem. Os níveis críticos de P no solo e na massa seca da parte aérea diminuíram com o aumento do nível de calagem. |
|
Palavras-Chave: |
Critical level; Eucalyptus dunnii; Nível cítrico; Tissue. |
|
Thesagro: |
Solo; Tecido. |
|
Thesaurus Nal: |
soil. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/74552/1/pfb-INFLUENCIA.pdf
|
|
Marc: |
LEADER 01547naa a2200241 a 4500
001 1945650
005 2013-01-21
008 2012 bl uuuu u00u1 u #d
022 $a1983-2605
024 7 $a10.4336/2012.pfb.32.72.401$2DOI
100 1 $aMAEDA, S.
245 $aInfluência de calagem e adubação fosfatada no crescimento inicial de eucalipto e nos níveis críticos de P.$h[electronic resource]
260 $c2012
520 $aO efeito da aplicação combinada de calagem e adubação fosfatada nos níveis críticos do solo e da planta em Eucalyptus dunnii foi estudado em condições de vaso. Os tratamentos consistiram na combinação de três níveis de calagem (C0, sem calagem; C1/2, metade da dose para elevar o pH em água a 5,5 pelo método do pH SMP; C1, dose para elevar o pH em água a 5,5 pelo método do pH SMP) e cinco doses de fósforo (0; 50; 150; 300 e 600 mg de P kg-1 de solo). O experimento foi conduzido por 67 dias em casa de vegetação não climatizada, utilizando um Cambissolo Húmico Ta Alumínico Típico. As maiores produções de matéria seca da parte aérea foram observadas no maior nível de calagem. Os níveis críticos de P no solo e na massa seca da parte aérea diminuíram com o aumento do nível de calagem.
650 $asoil
650 $aSolo
650 $aTecido
653 $aCritical level
653 $aEucalyptus dunnii
653 $aNível cítrico
653 $aTissue
700 1 $aBOGNOLA, I. A.
773 $tPesquisa Florestal Brasileira, Colombo$gv. 32, n. 72, p. 401-407, out./dez. 2012.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
|
Data corrente: |
23/05/2023 |
|
Data da última atualização: |
23/05/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
PINTO, V. M.; REIS, A. F. de B.; MELO, M. L. A. de; REICHARDT, K.; SANTOS, D.; VAN LIER, Q. de J. |
|
Afiliação: |
VICTOR MERIGUETTI PINTO, CENA; ANDRE FROES DE BORJA REIS, LOUISIANA STATE UNIVERSITY; MARINA LUCIANA ABREU DE MELO, CENA; KLAUS REICHARDT, CENA; DEIVISON SANTOS, CNPASA; QUIRIJN DE JONG VAN LIER, CENA. |
|
Título: |
Sustainable irrigation management in tropical lowland rice in Brazil. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Agricultural Water Management, v. 284, 108345, 2023. |
|
ISSN: |
0378-3774 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Drought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water productivity by an average of 9 % and decreases relative grain yield by 5-12 %. Water productivity based on bottom flux increased on average by about five times (high rainfall scenario) to ten times (low rainfall scenario) when comparing flooding with water-saving irrigation. Results suggest that saving irrigation based on crop transpiration can reduce deep percolation losses and increase water productivity in the rice-growing areas of the Brazilian Cerrado. MenosDrought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water pr... Mostrar Tudo |
|
Palavras-Chave: |
SWAP model; Water productivity. |
|
Thesagro: |
Arroz; Cerrado; Irrigação. |
|
Thesaurus NAL: |
Irrigation; Rice. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1153943/1/awm-2023.pdf
|
|
Marc: |
LEADER 02696naa a2200277 a 4500
001 2153943
005 2023-05-23
008 2023 bl uuuu u00u1 u #d
022 $a0378-3774
100 1 $aPINTO, V. M.
245 $aSustainable irrigation management in tropical lowland rice in Brazil.$h[electronic resource]
260 $c2023
520 $aDrought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water productivity by an average of 9 % and decreases relative grain yield by 5-12 %. Water productivity based on bottom flux increased on average by about five times (high rainfall scenario) to ten times (low rainfall scenario) when comparing flooding with water-saving irrigation. Results suggest that saving irrigation based on crop transpiration can reduce deep percolation losses and increase water productivity in the rice-growing areas of the Brazilian Cerrado.
650 $aIrrigation
650 $aRice
650 $aArroz
650 $aCerrado
650 $aIrrigação
653 $aSWAP model
653 $aWater productivity
700 1 $aREIS, A. F. de B.
700 1 $aMELO, M. L. A. de
700 1 $aREICHARDT, K.
700 1 $aSANTOS, D.
700 1 $aVAN LIER, Q. de J.
773 $tAgricultural Water Management$gv. 284, 108345, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
