Investigating Alternative Irrigation Strategies

Researchers in arid regions have explored greywater as an alternative irrigation source for turfgrass; however, poor-quality water sources have a tendency to increase soil nutrients (particularly salts) to toxic levels. Fortunately, the cool-humid climatic regions of North America have significant precipitation throughout the year; potentially enough to mitigate nutrient toxicity associated with regular greywater use.  This study includes cultivar assessment of salt-tolerant perennial ryegrasses, irrigated under three levels of greywater applications (continuous, supplemental, and control) throughout multiple years. An additional study is being conducted to determine optimal irrigation scheduling for perennial ryegrass in the Pacific Northwest, in an effort to reduce water consumption.

Final Report