Monday, 7 November 2005
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Minimization of Irrigation Water While Maintaining a Healthy Turfgrass.

Jacob Dane, Harold Walker, Laurent Bahaminyakamwe, and Leonard Githinji. Auburn University, Auburn University, Agronomy and Soils, Auburn, AL 36849-5412

Judicious water management of turfgrass is an important issue considering the increase in competition for water among, e.g., agriculture, industry, municipalities, and home gardeners. The objective of this study was, therefore, to identify grass species that remain healthy while minimizing the application of supplemental water. To this effect we established three irrigation regimes for four cool season grasses, viz., Tall Fescue Rebel III, SE Tall Fescue, HB 129 (Thermablue), and HB 329 (Durablue). The imposed irrigation regimes were full stress (no irrigation), intermediate stress (matric head > -300 cm of water pressure), and no stress (matric head > -300 cm of water pressure). Tensiometers installed at 15-cm and 30-cm depths were used to measure the matric head values as a function of time. Based on accumulative water present in the soil profile and the number of days on which less than 0.5 cm of available water was present in the profile, we concluded that across all three irrigation treatments and four grass species, the hybrid bluegrasses (HB 129, HB 329) were generally better at distributing water use than the two tall fescues (Rebel III, Southeast).

Handout (.pdf format, 1142.0 kb)

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