000 02224nab|a22003137a|4500
999 _c62354
_d62346
001 62354
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008 200722s2008||||ne |||p|op||||00||0|eng|d
022 _a0378-3774
024 8 _ahttps://doi.org/10.1016/j.agwat.2008.01.016
040 _aMX-TxCIM
041 _aeng
100 1 _aMéndez-Barroso, L.A.
_914944
245 1 0 _aQuantifying water stress on wheat using remote sensing in the Yaqui Valley, Sonora, Mexico
260 _aAmsterdam (Netherlands) :
_bElsevier,
_c2008.
500 _aPeer review
520 _aRemote sensing can allow a more efficient irrigation water management by applying the water when crops require it or when symptoms of water stress appear. In this study, the spatial and temporal distribution of the water deficit index (WDI) and crop evapotranspiration (ET) in wheat were determined through analysis of satellite-based remote sensing images in the Yaqui Valley, Sonora, México. We utilize an empirical model based on the canopy temperature–vegetation cover relationship methodology known as the Moran's trapezoid. We analyze and discuss the spatial and temporal distributions of WDI and ET at the regional and local scales. Results show a linear relationship (R2 = 0.96) between the values of WDI and the number of days elapsed since the last irrigation. The water deficit index could be utilized to estimate the quantity of available water in wheat and to know the degree of stress presented by the crop. Advantages offered by this methodology include obtaining WDI and evapotranspiration values in zones with partial or null vegetation cover and for large irrigation schemes lacking the necessary data for traditional water management.
546 _aText in English
650 7 _aVegetation index
_2AGROVOC
_95833
650 7 _aCrop management
_gAGROVOC
_2
_91061
650 7 _aDrought stress
_2AGROVOC
_91081
650 7 _aEvapotranspiration
_2AGROVOC
_911763
651 7 _91318
_aMexico
_gAGROVOC
700 1 _914945
_aGaratuza-Payán, J.
700 1 _914946
_aVivoni, E.R.
773 0 _dAmsterdam (Netherlands) : Elsevier, 2008.
_x0378-3774
_gv. 95, no. 6, p. 725-736
_tAgricultural Water Management
_w444468
942 _cJA
_n0
_2ddc