Evaporación a equilibrio en el pasto Ryegrass en la agricultura de riego de las zonas áridas
DOI:
https://doi.org/10.59741/agraria.v1i2.308Keywords:
Equilibrium evaporation, local advection, energy balance, evapotranspirationAbstract
Evaporation to equilibrium on ryegrass on irrigated agriculture of arid lands. The objective of this research was to calibrate the equilibrium evaporation approach (LEequ) to determine ryegrass actual evapo transpiration (LE) in the irrigated agriculture of arid lands. Its easy implementation and low cost are the major advantages of this approach for determining the rate of evapotranspiration of crops in real time, as compared to other micrometeorological methods. The calibration consists in obtaining the advection fac tor (a), which is multiplied by the equilibrium evaporation to obtain actual evapotranspiration. The advection factor depends on the weather conditions of the region, and on the magnitude of local advection. For different time segments was obtained from the relation a = LE/LEequ. LE was calculated by the energy balance equation, while LEequ from measurements of net radiation and soil heat flux at the surface. The results of this research showed that net radiation (Rn), actual latent heat flux (LE), and latent heat flux at equilibrium (LEequ) follow the same trend as the incident solar radiation (Rsw), and that there is a very close relation between actual evapotranspiration and equilibrium evaporation. When sensible heat flux (H) is negative, indicating local advection, LE is grater than LEequ and the average advection factor is 1.51, In contrast, when H is positive (no local advection) LE is less than LEequ and the average advection factor is 1.00. A direct relation between the increase of sensible heat flux from the atmosphere to grass canopy (negative H), and the increase on the advection factor was observed. It was also observed a possible relation between the increase of wind speed and the decrease of the advection factor. No relation was detected between wind direction and the advection factor
Downloads
References
Allen, R.G., Smith, M., Perrier, A. and Pereira, L.S., 1994. An update for the calculation of the reference evapo transpiration. ICID Bulletin 43(2): 1-34.
Baldocchi, D.D., B.B. Hicks y T.P. Meyers. 1988. Mea suring biosphere-atmosphere exchanges of biologically related gases with micrometeorological methods. Ecol ogy 69: 1331-1340. DOI: https://doi.org/10.2307/1941631
Hanson, B.R., 1996. Errors in using historical reference crop evapotranspiration for irrigation scheduling. Pro ceedings of ASAE International Conference on Evapo transpiration and irrigation Scheduling. San Antonio, TX, p. 220-1224.
Lascano, R.J., Baumhardt, R.L., Hicks, S.K., Evett, S.R. and Heilman, J.L., 1996. Daily measurement and cal culation of crop water use. Proceedings of ASAE In ternational Conference on Evapotranspiration and Irri gation Scheduling. San Antonio, TX, p. 225-230.
Leite Maysa Lima, Gilberto C. Sediyama, Dirceu Teixeira Coelho y Hélio Alves Vieira. 1990. Determinacáo da
evapotranspiracáo de equilibrio numa superficie cultivada com Feijáo (Phaseolus vulgaris L.), em duas densidades de Plantio. Revista Ceres 37: 99-110.
Medeiros, T.A., Sentelhas P. C., de Lima N.R. 2003. Ref erence evapotranspiration estimated by Penman Monteith equation, Lysimetric measures and empirical equations in Paraipaba, State of Ceará, Brazil. Engenharia Agrícola, Jaboticabal, v.23, n.1, p.31-40.
Priestley, C.H.B., y R.J. Taylor 1972. On the assessment of surface heat flux and evaporation using large-scale parameters. Monthly Weather Review 100:81-92. DOI: https://doi.org/10.1175/1520-0493(1972)100<0081:OTAOSH>2.3.CO;2
Rana, G., N. Katerji, M. Mastrorilli, M. El Moujabber y N. Brisson.1997. Validation of a model of actual evapo transpiration for water stressed soybeans. Agricultural and Forest Meteorology 86: 215-224. DOI: https://doi.org/10.1016/S0168-1923(97)00009-9
Rosenberg, N.J. 1969. Advective contribution of energy utilized in evapotranspiration by Alfalfa in the East Central Great Plains. Agric. Meteorol. 6: 179-184. DOI: https://doi.org/10.1016/0002-1571(69)90003-X
Verma, S.B., D.D. Baldocchi, D.E. Anderson, D.R. Matt R.J. Clement. 1986. Eddy fluxes of CO2, water vapor and sensible heat over a deciduous forest. Boundary Layer Meteorol. 36: 71-91. DOI: https://doi.org/10.1007/BF00117459
Jiyane, J. y Zermeño-González, A. 2003. Aplicación del enfoque de evapotranspiración a equilibrio en la agricultura de riego de las zonas áridas. Agrociencia, 37: 553-563.
Wrigght, J.L., 1996. Derivation of alfalfa and grass refer ence evapotranspiration. Proceedings of ASAE Inter national Conference on Evapotranspiration and irriga tion Scheduling. San Antonio, TX, p. 133-140.
Zermeño-González, A. y L. E. Hipps. 1997. Downwind evolution of surface fluxes over a vegetated surface during local advection of heat and saturation deficit. Journal Of Hydrology 192: 189-210. DOI: https://doi.org/10.1016/S0022-1694(96)03108-3
Zermeño González, A. 2001. Métodos micro meteorológicos para medir flujos de calor y vapor de agua entre los cultivos y la atmósfera. XIII Semana Internacional de Agronomía. 5-7 de septiembre. Gómez Palacios, Durango, México, p. 53-57.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
How to Cite
PLUMX Metrics
