Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Cost Estimation Of Wastage Irrigation Water In Arid Public Landscape Areas King Abdullah Park– Dammam, Saudi Arabia, Ali Al-Sulbi
Cost Estimation Of Wastage Irrigation Water In Arid Public Landscape Areas King Abdullah Park– Dammam, Saudi Arabia, Ali Al-Sulbi
Emirates Journal for Engineering Research
The Kingdom of Saudi Arabia (KSA) locates within the territory of tropical deserts where water is one of the most important natural resources. However considerable amount of water has been wasted, on daily bases, in irrigation of public landscaped areas managed by local municipalities. Water wastage related to issues include improper calculation or no calculation of plants water budget; malfunctionality or failure of irrigation system components, tools and equipment; misunderstanding of soil-water and plant relationships; and improper management of irrigation operations. This research aims to estimate the cost of wasted water in association with irrigation of public landscape areas in …
Water Savings And ‘Innovation’ Zoysiagrass Quality In Response To Irrigation Strategy, Manoj Chhetri, Jack Fry, Megan Kennelly, Dale Bremer, Jared Hoyle
Water Savings And ‘Innovation’ Zoysiagrass Quality In Response To Irrigation Strategy, Manoj Chhetri, Jack Fry, Megan Kennelly, Dale Bremer, Jared Hoyle
Kansas Agricultural Experiment Station Research Reports
Performance of ‘Innovation’ zoysiagrass was evaluated under four irrigation regimes: a) routine irrigation (1.2 inches weekly); b) evapotranspiration (ET)-based irrigation (60% of estimated ET); c) soil water sensor (SWS)-based irrigation; and d) no irrigation. The SWS-based irrigation method reduced water application by 72% and 56%, respectively, compared to routine or ET-based irrigation. Visual turf quality of turf receiving SWS-based irrigation remained above the minimal acceptable level throughout the study. Innovation zoysiagrass sustained acceptable quality for more than 21 days with no irrigation, and nonirrigated turf recovered fully within four weeks after irrigation treatments ceased and turf was well irrigated. Soil …
Urban Lawn Microclimates Affect Reference Evapotranspiration, Kenton W. Peterson, Dale J. Bremer, Jack D. Fry
Urban Lawn Microclimates Affect Reference Evapotranspiration, Kenton W. Peterson, Dale J. Bremer, Jack D. Fry
Kansas Agricultural Experiment Station Research Reports
Grass reference evapotranspiration (ETo) obtained from weather stations in open locations is often used to estimate irrigation requirements of turfgrass in local or regional urban lawns. However, the environments of urban lawns are often altered by surrounding buildings, trees, etc., to form various microclimates that may alter evapotranspiration (ET). Our research, which placed weather stations in urban lawns and nearby open swards of turfgrass, revealed ETowas 41% lower in residential lawn microclimates than in nearby open turfgrass swards. Less ET within urban lawns than in nearby open swards suggests using standard historical weather data to estimate …
Estimating Transpiration From Turfgrass Using Stomatal Conductance Values Derived From Infrared Thermometry, Kenton W. Peterson, D. Bremer, J. M. Blonquist Jr.
Estimating Transpiration From Turfgrass Using Stomatal Conductance Values Derived From Infrared Thermometry, Kenton W. Peterson, D. Bremer, J. M. Blonquist Jr.
Kansas Agricultural Experiment Station Research Reports
Infrared thermometry provides accurate measurements of plant canopy temperature, which, along with basic weather variables, allows estimation of canopy stomatal conductance to water vapor flux (gc) and transpiration. Using this method we compared modeled estimates of transpiration (CONDT) with evapotranspiration (ET) measurements from nearby microlysimeters (LYSET) in tall fescue (Schedonorus arundinaceusSchreb.) turfgrass. Results indicated transpiration may be reliably estimated via calculation of gcin turfgrass.
Measurement Of Evapotranspiration In Turfgrass: Recommended Techniques And Adjustment Coefficients, Kenton W. Peterson, D. Bremer, Kira B. Shonkwiler, J. M. Ham
Measurement Of Evapotranspiration In Turfgrass: Recommended Techniques And Adjustment Coefficients, Kenton W. Peterson, D. Bremer, Kira B. Shonkwiler, J. M. Ham
Kansas Agricultural Experiment Station Research Reports
Evapotranspiration (ET) from turfgrass can be measured directly using lysimeters (LYS), estimated from weather data using models, or approximated using atmometers. Evapotranspiration measurements from LYS were compared with ET estimates from four variations of the American Society of Civil Engineers (ASCE) standardized ET equation including the use of: 1) hourly steps of measured net radiation (Rn) (ASCEHM); 2) hourly steps of Rncalculated from global irradiance (ASCEHC); 3) daily steps of measured Rn(ASCEDM); and 4) daily steps of Rncalculated from global irradiance (ASCEDC); ET from …