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Effects Of Irrigation And Mowing On Species Diversity Of Grass And Wildflower Mixtures For The Intermountain West, Daniel W. Dewey, Paul G. Johnson, Roger Kjelgren
Effects Of Irrigation And Mowing On Species Diversity Of Grass And Wildflower Mixtures For The Intermountain West, Daniel W. Dewey, Paul G. Johnson, Roger Kjelgren
Plants, Soils, and Climate Faculty Publications
Grass and wildflower mixtures can be aesthetically appealing, water-conserving, low-maintenance alternatives to conventional turfgrass. One problem with these mixtures is loss of species diversity over time. We examined the effects of irrigation and mowing on the species diversity of 3 grass and wild-flower mixtures. The nonirrigated and non-mowed treatment combination maintained diversity most effectively whereas the irrigated and mowed treatment combination was least effective. Generally, when the irrigation treatment was significant (P < 0.05), irrigated plots contained more wildflowers. When the mowing treatment was significant (P < 0.05), mowed plots contained more common yarrow (Achillea millefolium L. [Asteraceae]) and strawberry clover (Trifolium fragiferum L. [Fabaceae]) and fewer Pacific aster (Symphyotrichum chilense (Nees) Nesom [Asteraceae]). Height measurements on non-mowed plots showed that irrigated plots had taller canopies than nonirrigated plots. Common yarrow was the most competitive wildflower, followed by strawberry clover and Pacific aster. Mixture 3 containing crested wheatgrass (Agropyron cristatum (L.) Gaertn. [Poaceae]) and thickspike wheatgrass (Elymus lanceolatus (Scribn. & J.G. Sm.) Gould ssp. lanceolatus [Poaceae]) maintained species diversity for the longest duration under nonirrigated and non-mowed conditions.
Stewardship And The Concept Of Yield In Landscape Water Conservation, Larry A. Rupp, Roger Kjelgren
Stewardship And The Concept Of Yield In Landscape Water Conservation, Larry A. Rupp, Roger Kjelgren
Plants, Soils, and Climate Faculty Publications
Growing up in what was rural Salt Lake County, my peers and I never knew a time when questions of water did not flow through our lives as surely as it flowed through the canals and irrigation ditches. We played in the flood of water pumped from the ditch onto our lawn, and we floated homemade rafts down the canal in the heat of the summer. We listened in amazement to descriptions of how the canals were built and wondered when we would be big enough to be asked to join the cooperative crew that skimmed the ditches in the …