| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
18/03/2019 |
|
Data da última atualização: |
08/11/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SILVA, E. H. F. M. da; GONÇALVES, A. O.; PEREIRA, R. A.; FATTORI JÚNIOR, I. M.; SOBENKO, L. R.; MARIN, F. R. |
|
Afiliação: |
EVANDRO HENRIQUE FIGUEIREDO MOURA DA SILVA, USP/ESALQ; ALEXANDRE ORTEGA GONCALVES, CNPS; RODOLFO A. PEREIRA, USP/ESALQ; IZAEL MARTINS FATTORI JÚNIOR, USP/ESALQ; LUIZ RICARDO SOBENKO, USP/ESALQ; FÁBIO RICARDO MARIN, USP/ESALQ. |
|
Título: |
Soybean irrigation requirements and canopy-atmosphere coupling in Southern Brazil. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Agricultural Water Management, v. 218, p. 1-7, Jun. 2019. |
|
DOI: |
10.1016/j.agwat.2019.03.003 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The lack of base information on crop water requirements under tropical conditions is one of the causes for inefficient water use and inadequate irrigation management. The crop coefficient (Kc) approach is universally adopted for scheduling and quantifying the water management and, recently, its relation with the evaporative atmosphere demand has been included in this approach to improve the decision-making on irrigation management. In this paper, we measured crop evapotranspiration (ETc) in two experiments as evaporative heat flux from a centre pivot-irrigated soybean plantations in tropical Brazil to quantify the crop water needs. Irrigation requirements were determined by comparing ETc with reference evapotranspiration (ETo), derived from FAO-56 (Allen et al., 1998). In this study, the average Kc value obtained was 0.92, which is nearly 20% lower than those recommended by the FAO-56 (Allen et al., 1998) and varied inversely as a function of ETo. Based on aerodynamic and leaf diffusive resistance (rs) data, Omega was computed and presented values relatively high compared to other crops, which means a relatively poor coupling of soybean canopies to the atmosphere. Throughout both experiments, the Kc value decreased by up to 44.8% when the ETo increased from 2 to 4 mm d-1, depending on the phenological phase, indicating the need for taking into account the ETo values when selection the Kc values for improving the irrigation management in tropical soybean. |
|
Palavras-Chave: |
Acoplamento dossel-atmosfera; Coeficiente de colheita; Condutância foliar; Uso da água. |
|
Thesagro: |
Colheita; Manejo de Água. |
|
Thesaurus Nal: |
Couplings; Crop coefficient; Leaf conductance. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02384naa a2200301 a 4500
001 2107159
005 2019-11-08
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agwat.2019.03.003$2DOI
100 1 $aSILVA, E. H. F. M. da
245 $aSoybean irrigation requirements and canopy-atmosphere coupling in Southern Brazil.$h[electronic resource]
260 $c2019
520 $aThe lack of base information on crop water requirements under tropical conditions is one of the causes for inefficient water use and inadequate irrigation management. The crop coefficient (Kc) approach is universally adopted for scheduling and quantifying the water management and, recently, its relation with the evaporative atmosphere demand has been included in this approach to improve the decision-making on irrigation management. In this paper, we measured crop evapotranspiration (ETc) in two experiments as evaporative heat flux from a centre pivot-irrigated soybean plantations in tropical Brazil to quantify the crop water needs. Irrigation requirements were determined by comparing ETc with reference evapotranspiration (ETo), derived from FAO-56 (Allen et al., 1998). In this study, the average Kc value obtained was 0.92, which is nearly 20% lower than those recommended by the FAO-56 (Allen et al., 1998) and varied inversely as a function of ETo. Based on aerodynamic and leaf diffusive resistance (rs) data, Omega was computed and presented values relatively high compared to other crops, which means a relatively poor coupling of soybean canopies to the atmosphere. Throughout both experiments, the Kc value decreased by up to 44.8% when the ETo increased from 2 to 4 mm d-1, depending on the phenological phase, indicating the need for taking into account the ETo values when selection the Kc values for improving the irrigation management in tropical soybean.
650 $aCouplings
650 $aCrop coefficient
650 $aLeaf conductance
650 $aColheita
650 $aManejo de Água
653 $aAcoplamento dossel-atmosfera
653 $aCoeficiente de colheita
653 $aCondutância foliar
653 $aUso da água
700 1 $aGONÇALVES, A. O.
700 1 $aPEREIRA, R. A.
700 1 $aFATTORI JÚNIOR, I. M.
700 1 $aSOBENKO, L. R.
700 1 $aMARIN, F. R.
773 $tAgricultural Water Management$gv. 218, p. 1-7, Jun. 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
19/11/2001 |
|
Data da última atualização: |
21/09/2015 |
|
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
|
Autoria: |
PEREIRA FILHO, I. A.; CRUZ, J. C.; COELHO, A. M. |
|
Afiliação: |
ISRAEL ALEXANDRE PEREIRA FILHO, CNPMS; JOSE CARLOS CRUZ, CNPMS; ANTONIO MARCOS COELHO, CNPMS. |
|
Título: |
Plantio da leucena e do milho intercalar. |
|
Ano de publicação: |
1998 |
|
Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 1998. |
|
Páginas: |
3 p. |
|
Série: |
(Embrapa Milho e Sorgo. Comunicado técnico, 10). |
|
Idioma: |
Português |
|
Palavras-Chave: |
Feed legumes; Maize; Planta leguminosa. |
|
Thesagro: |
Bactéria; Cerrado; Leguminosa; Leucaena; Leucaena Leucocephala; Milho; Zea Mays. |
|
Thesaurus NAL: |
Rhizobium tropici. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30897/1/ct-10.pdf
|
|
Marc: |
LEADER 00725nam a2200277 a 4500
001 1480986
005 2015-09-21
008 1998 bl uuuu u0uu1 u #d
100 1 $aPEREIRA FILHO, I. A.
245 $aPlantio da leucena e do milho intercalar.
260 $aSete Lagoas: Embrapa Milho e Sorgo$c1998
300 $a3 p.
490 $a(Embrapa Milho e Sorgo. Comunicado técnico, 10).
650 $aRhizobium tropici
650 $aBactéria
650 $aCerrado
650 $aLeguminosa
650 $aLeucaena
650 $aLeucaena Leucocephala
650 $aMilho
650 $aZea Mays
653 $aFeed legumes
653 $aMaize
653 $aPlanta leguminosa
700 1 $aCRUZ, J. C.
700 1 $aCOELHO, A. M.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
