Monday, November 5, 2007
75-11

Water Use During Establishment of Mixed- and Single-Species Urban Landscapes.

Kurt Steinke1, James Thomas2, Tim Pannkuk1, David Chalmers1, and Richard White1. (1) Heep Center 370 Olsen Blvd. 2474 TAMU, Texas A&M University - Soil & Crop Sciences, Texas A&M University, Dept. of Soil & Crop Sciences, College Station, TX 77843, (2) Texas A&M University, 2474 TAMU, College Station, TX 77843

Due to limiting water supplies, municipalities are now implementing or considering water restrictions regulating the use of water in outdoor urban landscapes. The regulations are written in a manner that perceives turfgrass as the primary water using plant within these communities. A study was conducted investigating the effects of vegetation type alone and in combination with other plant material on total water usage and water quality. Plots consisted of large metal lysimeters embedded with a leachate collection system. Vegetation types were comprised of St. Augustinegrass, bermudagrass, big bluestem and gulf coast muhly, red oak tree, St. Augustinegrass and red oak tree, and big bluestem and gulf coast muhly with a red oak tree. Two soil moisture probes were placed at three individual soil depths (6 total) within each lysimeter to monitor actual evapotranspiration and compare this value to potential evapotranspiration. Thermocouples were also installed in each lysimeter to examine heat loading. Data on actual evapotranspiration, water usage, heat accumulation, and leachate water quality will be discussed.