Water Use, Drought Resistance and Rooting Patterns of Turfgrasses in theSoutheast

摘要

Large acreages of turfgrass are used in urban areas for three purposes (a)functional for control of wind and water erosion, reducing water runoff, climatic cooling, and reduction of air pollution, noise, and glare, (b) recreational, and (c) aesthetic, which provides a pleasant environment for human activities as well as enhanced property values. Irrigation demand for turfgrass maintenance is one of the many competing uses for water in urban settings. Even in humid regions, periodic irrigation may be necessary for maintenance of turf and for survival in unusual drought periods. For the seven most commonly used turfgrasses in the Piedmont region of Georgia, the objectives of the study were (a) to quantify the seasonal evapotranspiration (ET) rates, (b) to determine spatial rooting patterns, (c) to define relative overall drought resistance of each turfgrass, and (d) to develop crop and pan coefficients for each grass for irrigation scheduling purposes.