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Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Comparison of Evapotranspiration from Citrus Groves in Flatwoods and Ridge SoilsPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: Paper number 052251, 2005 ASAE Annual Meeting . (doi: 10.13031/2013.19049) @2005Authors: Xinhua Jia, Amy Swancar, Jennifer M. Jacobs, Michael D. Dukes Keywords: Evapotranspiration, citrus, eddy correlation, flatwoods soil, ridge soil Citrus is one of the most important agricultural crops in Florida. Citrus groves are typically located in two soil profiles: flatwoods and ridge. Flatwoods soils are poorly drained fine textured sands with organic matter in the shallow root zone, which require less frequent field irrigation with a longer duration when using a fixed flow rate. Ridge soils are fine to coarse textured sands that have very little water holding capacity; therefore, irrigation water is supplied more frequently with a shorter duration. Water flow in the soil profile differs primarily because of water table depth, but also because of variability in soil properties. Citrus evapotranspiration (ET) is affected by tree size, tree spacing, ground cover, and climate as well as the difference in root structure and root water extraction caused by different soil conditions. Accurate estimation of ET from citrus groves is limited by a lack of a standard method and is time consuming because most methods use a soil water mass balance at the soil surface. The eddy correlation method is a reliable technique that measures the turbulent fluxes of water vapor and sensible heat. In this study, eddy correlation systems were placed above the citrus canopy in two locations, one in flatwoods soil and one in ridge soil. The results provided daily and seasonal patterns of ET for the two soil profiles, improving the accuracy of ET for future water-resource management strategies. (Download PDF) (Export to EndNotes)
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