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Jeff B. Million and Thomas H. Yeager

temperature, and wind affect evapotranspiration (ET) rates and rain can reduce the irrigation demand ( McCready et al., 2009 ). Beeson (2010) described the relationship between reference ET and actual ET based on plant canopy cover of the container

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Vania Lanari, Oriana Silvestroni, Alberto Palliotti, Alan Green and Paolo Sabbatini

two different watering treatments: 1) full irrigation (well-watered vines: WW-vines), with daily manual irrigation to restore soil moisture lost by evapotranspiration and to maintain the soil at field capacity; and 2) limited irrigation (water

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Youssef Rouphael, Mariateresa Cardarelli, Giuseppe Colla and Elvira Rea

. In both seasons, weeds were controlled with hand hoeing. Treatments were defined by a factorial combination of three irrigation levels based on evapotranspiration (ET) rates (1.0, 0.75, and 0.5 ET) and two grafting treatments (ungrafted ‘Ingrid’ and

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Ana Centeno, Pilar Baeza and José Ramón Lissarrague

irrigation system, only a fraction of the estimated crop evapotranspiration (ET) is replenished. Stored soil water is assumed to provide the remaining fraction. Usually, spring rainfalls and soil water content satisfied wine grape needs until berry set (mid

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David R. Bryla, Jim L. Gartung and Bernadine C. Strik

plants each and was replicated five times ( Fig. 1 ). Fig. 1. Illustration of irrigation treatments applied to ‘Elliott’ blueberry. Plants were irrigated by sprinkler, microspray, or drip at 50%, 100%, and 150% of estimated crop evapotranspiration (ET c

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Jing Zhang, J. Bryan Unruh and Kevin Kenworthy

comparative water consumption of these three species under non-limiting moisture conditions has been documented in a few studies. Centipedegrass was found to have a lower evapotranspiration (ET) rate (5.5 mm·d −1 ) compared with ‘Argentine’ BH (6.3 mm·d −1

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William L. Bauerle and Joseph D. Bowden

in plants where adaptations are required to deal with potential evapotranspiration in very different climates. Nevertheless, multiple factors appear to be involved in regulating transpiration. Simulation estimates indicated that transpiration

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Juan Carlos Díaz-Pérez and James E. Hook

multiplying the reference evapotranspiration (ETo) by a crop coefficient ( Kc ), which is dependent on the crop stage of development. The Kc values used in this study were 0.25 (week 1), 0.4 (week 2), 0.55 (week 3), 0.70 (week 4), 0.85 (week 5), and 1

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Timothy M. Spann and Holly A. Little

= evapotranspiration. There was a significant interaction between drought stress and SWE treatment for new leaf area for each rootstock. Drought stress significantly reduced new leaf area on control trees of both rootstocks compared with fully irrigated trees ( Fig. 2

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Thomas A. Obreza and Arnold Schumann

efficiently and precisely. A small minority of groves are irrigated by drip systems or seepage irrigation (water table control on poorly drained soils only). Although annual citrus potential evapotranspiration (ET) is ≈45 inches, the annual irrigation