Effect of Light Exposure and Cold-season Turfgrass Mixing on Performance of Lawn

  Objective  Effects of full light exposure or shading condition and mixing ratio of the cool season meadow grass (Euromyth and K.B.G), Festuca rubra (Rubra), perennial ryegrass (Bomber) and Bermudagrass on the growth and appearance of the lawn were evaluated for turf building in the city of Changchun in northern China.

  Method  Turf appearance indices on the treatment lawns were compared and evaluated using the membership function method and weights comprehensive evaluation method.

  Result  In the shade, the mixing ratio of Bomber:Euromyth at 1:2 performed the best with an evaluation score of 0.731. Under full sunlight exposure, the Bomber:K.B.G:Common=3:4:3 combination had the highest score of 0.396, whereas mixing Bomber and Euromyth or Bomber and Rubra would not form an acceptable lawn.

  Conclusion  The combination of two turfgrasses appeared superior on lawn performance to that of 3-turfgrass containing the protective Bermuda variety in a shaded lot. However, with full sunlight the later were better than the former.