What is the landscape coefficient for a cool season grass?

Study for the Water Use Efficiency Practitioner One Test. Use flashcards and multiple choice questions, with hints and explanations. Prepare efficiently for your certification exam!

Multiple Choice

What is the landscape coefficient for a cool season grass?

Explanation:
The landscape coefficient is the multiplier that adjusts the reference evapotranspiration to reflect how much water the landscape actually uses. For cool-season turfgrass, the typical value is 0.8, meaning the crop consumes about 80% of the reference ET under standard conditions. This accounts for factors like canopy shading, soil cover, and the plant’s physiology that reduce actual evapotranspiration compared with the reference. So the irrigation estimate is ETc ≈ 0.8 × ET0. Other values would imply more or less reduction, but 0.8 is the standard figure for cool-season grass.

The landscape coefficient is the multiplier that adjusts the reference evapotranspiration to reflect how much water the landscape actually uses. For cool-season turfgrass, the typical value is 0.8, meaning the crop consumes about 80% of the reference ET under standard conditions. This accounts for factors like canopy shading, soil cover, and the plant’s physiology that reduce actual evapotranspiration compared with the reference. So the irrigation estimate is ETc ≈ 0.8 × ET0. Other values would imply more or less reduction, but 0.8 is the standard figure for cool-season grass.

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