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Simulating spatial and temporal variation of corn canopy temperature during an irrigation cycle (1983)

Federer, C. A. ; Choudhury, B. J.

In: CASI

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Publication Date: 2019-06-28

Description: The canopy air temperature difference (delta T) which provides an index for scheduling irrigation was examined. The Monteith transpiration equation was combined with both uptake from a single layered root zone and change in internal storage of the plant and the continuity equation for water flux in the soil plant atmosphere system was solved. The model indicates that both daily total transpiration and soil induced depression of plant water potential may be inferred from mid-day delta T. It is suggested that for the soil plant weather data used in the simulation, either a mid day spatial variability of about 0.8K in canopy temperatures or a field averaged delta T of 2 to 4K may be a suitable criterion for irrigation scheduling.

Keywords: EARTH RESOURCES AND REMOTE SENSING

Type: NASA-TM-84991 , NAS 1.15:84991

Format: application/pdf

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