@article{PAR00003520,
  title = {{C}itrus orchard evapotranspiration : comparison between eddy covariance measurements and the {FAO}-56 approach estimates},
  author = {{E}r-{R}aki, {S}. and {C}hehbouni, {A}bdelghani and {G}uemouria, {N}. and {E}zzahar, {J}. and {K}habba, {S}. and {B}oulet, {G}illes and {H}anich, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he aim of this study was to use the {FAO}-56 single and dual crop coefficient approaches to estimate actual evapotranspiration ({ET}a) over an irrigated citrus orchard under drip and flood irrigations in {M}arrakech, {M}orocco. {T}he results showed that, by using crop coefficients suggested in the {FAO}-56 paper, the performance of both approaches was poor for two irrigation treatments. {T}he {R}oot {M}ean {S}quared {E}rror ({RMSE}) between measured and simulated {ET}a values over the citrus orchard under drip irrigation was about 1.43 and 1.27mm/day for the single and dual approaches, respectively, while the corresponding statistics for the orchard irrigated by the flooding technique was 1.87 and 2.48mm/day. {A}fter determination of the appropriate values of the crop coefficient ({K}c) based on eddy covariance measurements of {ET}a, the performance of both approaches greatly improved. {T}he obtained {K}c values were lower than the {FAO}-56 values by about 20%. {T}he low {K}c values obtained reflect the practice of drip irrigation for one field and the low value of cover fraction for the other field. {A}dditionally, the efficiency of the irrigation practices was investigated by comparing the measured {K}c for two fields. {T}he results showed that a considerable amount of water was lost by direct soil evaporation from the citrus orchard irrigated by flooding technique.},
  keywords = {{C}rop coefficient ; drip and flood irrigation ; citrus orchard ; semi-arid ; region},
  booktitle = {},
  journal = {{P}lant {B}iosystems},
  volume = {143},
  numero = {1},
  pages = {201--208},
  ISSN = {1126-3504},
  year = {2009},
  DOI = {10.1080/11263500802709897},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00003520},
}