Graduate Thesis Or Dissertation

 

Low Maintenance Strategies and Challenges within Oregon School Landscapes Pubblico Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/q237hx255

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  • Ornamental landscapes require considerable amounts of inputs, including but not limited to irrigation, mowing or pruning, fertilization, and pest management. However, school systems have limited budgets, which reduce their access to resources and labor hours. Therefore, the objective of this project is to identify ground covers that can compete with weeds and maintain aesthetic quality while under minimal maintenance. To explore this objective, a field experiment was initiated in May 2015 at Corvallis, OR. Experimental design was a randomized complete block design with 4 replications. Factors include year (2015 and 2016) and ground cover taxa. Taxa included 3 turfgrasses (Festuca rubra L. ssp rubra ‘Chantilly’, Festuca rubra L. spp. commutata ‘Longfellow II’, Agrostis tenuis Sibth ‘Puritan’) and 7 forb or shrub plants (Vinca minor ‘Illumination’, Cotoneaster dammeri ‘Coral Beauty’, Euonymus fortunei ‘Kawensis’, Juniperus horizontalis ‘Blue Chip’, Herniaria glabra ‘Green Carpet’, Sedum spurium ‘Tri-Color, and Ceanothus glorious ‘Point Reyes’), which were selected using a school system stakeholder group. All plots received daily irrigation for the first 4 months and subsequently discontinued in September 2015. Plots are weeded and fertilized (4.88 g nitrogen m-2) once annually. Results determined that A. tenuis had the highest plant cover (68.1%), followed by F. Rubra ‘Chantilly’ (68.1%) and F. Rubra ‘Longfellow’ (66%), then S. spurium (24%) and J. horizontalis (22.6%). The remaining ground covers all provided less than 7% plant cover. A strong inverse correlation between plant ground cover and weed ground cover was identified in both years (R2= 0.978, R2= 0.948).
  • Keywords: weeds, turfgrass, input, landscape, maintenance, Oregon
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