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Assessing satellite-based basal crop coefficients for irrigated grapes ( Vitis vinifera L.)

Campos, Isidro ; Neale, Christopher M.U. ; Calera, Alfonso ; Balbontín, Claudio ; González-Piqueras, Jose

Agricultural water management, 2010-12, Vol.98 (1), p.45-54 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Assessing satellite-based basal crop coefficients for irrigated grapes ( Vitis vinifera L.)
Autor: Campos, Isidro ; Neale, Christopher M.U. ; Calera, Alfonso ; Balbontín, Claudio ; González-Piqueras, Jose
Assuntos: Agricultural and forest climatology and meteorology. Irrigation. Drainage ; Agricultural and forest meteorology ; Agronomy. Soil science and plant productions ; basal crop coefficient ; Biological and medical sciences ; Canopy reflectance ; Crop coefficients ; Crops ; eddy-covariance method ; energy balance ; Evapotranspiration ; Evapotranspiration of grapes ; Evapotranspiration of grapes Vegetation indices Remote sensing Canopy reflectance Crop coefficients ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Grapes ; irrigated farming ; Mathematical models ; Remote sensing ; rhizosphere ; satellites ; simulation models ; Soil (material) ; soil water balance ; soil water storage ; transpiration ; Vegetation ; Vegetation indices ; Vitaceae ; Vitis vinifera ; Water balance ; Water balance and requirements. Evapotranspiration ; water use efficiency
É parte de: Agricultural water management, 2010-12, Vol.98 (1), p.45-54
Notas: http://dx.doi.org/10.1016/j.agwat.2010.07.011
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SourceType-Scholarly Journals-1
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Descrição: A combined methodology of basal crop coefficient ( K cb ) derived from vegetation indices (VI) obtained from satellite images and a daily soil water balance in the root zone of the crop was proposed to accurately estimate the daily grape crop coefficient and actual evapotranspiration. The modeled values were compared with field measurements of crop evapotranspiration (ET) using an energy balance eddy-covariance flux tower and adjusted for closure using the measured Bowen ratio. A linear relation between K cb and VI for vineyard was obtained, K cb = 1.44 × NDVI-0.10 and K cb = 1.79 × SAVI-0.08. The correlation of the measured crop coefficient ( K c ) and modeled ( K crf ) exhibits a linear tendency, K c = 0.96 K crf , r 2 = 0.67. Other derived parameters such as weekly K c and daily and weekly ET show good consistency with measurements and higher coefficients of determination. The study of the soil water balance suggests the importance of soil water storage in grapes within the La Mancha region. These results validate the use of remote sensing as a tool for the estimation of evapotranspiration of irrigated wine grapes planted on trellis systems.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Assessing satellite-based basal crop coefficients for irrigated grapes ( Vitis vinifera L.)

Campos, Isidro ; Neale, Christopher M.U. ; Calera, Alfonso ; Balbontín, Claudio ; González-Piqueras, Jose

Amsterdam: Elsevier B.V

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