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| Web URL(s): | https://scisoc.confex.com/crops/2012am/webprogram/Paper73561.html
Last checked: 03/03/2017 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Urzagaste, Paul;
Kopp, Kelly |
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| Author Affiliation: | Department of Plants, Soils & Climate, Utah State University, Logan, UT |
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| Title: | Evaluation of climate-based controllers for landscape irrigation |
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| Section: | Establishment, thatch, soil and water management in turfgrass graduate student competition
Other records with the "Establishment, thatch, soil and water management in turfgrass graduate student competition" Section
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| Meeting Info.: | Cincinnati, Ohio: October 21-24, 2012 |
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| Source: | ASA, CSSA and SSSA Annual Meetings [2012]. 2012, p. 73561. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy and Crop Science Society of America and Soil Science Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Climate-based controllers; Cultivar evaluation; Drought injury; Surface temperature; Water conservation; Water potential
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| Geographic Terms: | Utah, United States of America |
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| Abstract/Contents: | "Water conservation is an important resource issue today. Daily, 96.9 million m3 of water are consumed in the United States, of which approximately 24.7 million m3 (25.5 %) is used for watering lawns, plants, and gardens (Vickers, 2001). In Utah, water is a limited resource; it's the second most arid state and is prone to droughts. In addition, Utah is one of the fastest and most highly urbanized states. Therefore, residential and commercial landscape watering is a large potential source of water for achieving the goals of urban water conservation. Climate-based irrigation controllers, also known as "smart controllers", have been developed as one technological approach to achieving landscape water conservation. These controllers measure the depletion of available plant soil moisture in order to operate an irrigation system. The main objectives of this study were to evaluate the applicability of "smart controllers" in a field setting and to determine whether different climate-based irrigation controller technologies achieve different levels of landscape water conservation without negatively impacting landscape quality. The experiment took place at USU's Greenville Research Farm, in an area of 930m2, divided in 20 small plots of 28m2 each. The plots were composed of an area of turfgrass (21m2) and another of ornamental plants (7m2). Four treatments were evaluated, with 5 replications each and arranged in a randomized complete block design. Each treatment represented a different controller and two of the treatments used on-site climate sensors [HTR][WTM] while one received a paging signal with climate data [RNB]. In addition, control plots [CTRL] were programmed using the recommendations of USU Cooperative Extension. Measurements of water applied and soil moisture were collected. Stomatal conductance of the perennials Euonymus alatus and Paeonia lactiflora, and water potential and surface temperature of the turfgrass Poa pratensis L. were also collected. Plant quality was measured for both the turfgrass and the perennial plants. Preliminary results showed statistically significant differences in water application for the different treatments. The WTM, RNB, and HTR treatments applied 49, 59, and 60%, respectively, of the recommended water application rates of the CTRL treatment. Soil moisture results from CTRL treatment were significantly higher than the rest of the treatments. Consequently, turfgrass surface temperature measurements for the CTRL treatment were significantly lower than the rest of the treatments. No significant differences were found in water potential or stomatal conductance among the treatments. On turfgrass, CTRL treatment shows significantly higher quality ratings than the rest of the treatments on specific days. No significant quality differences were observed in the perennial plants evaluated." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Urzagaste, P., and K. Kopp. 2012. Evaluation of climate-based controllers for landscape irrigation. Int. Ann. Meet. p. 73561. |
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Last checked: 03/03/2017 |
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