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Youssef Rouphael, Mariateresa Cardarelli, Giuseppe Colla, and Elvira Rea

-watermelon [ Citrullus lanatus (Thunb.) Matsum. and Nakai]. Our hypothesis is that grafting may enhance drought resistance, plant water use efficiency, and plant growth. To verify this hypothesis, watermelon plants were grown in two consecutive growing seasons under

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David H. Suchoff, Jonathan R. Schultheis, Matthew D. Kleinhenz, Frank J. Louws, and Christopher C. Gunter

yields while reducing overall water inputs ( Pennisi, 2008 ). Numerous cultural practices and breeding efforts have been aimed at improving water use efficiency. Practices that direct irrigation water to the plant roots, such as subsurface drip, or that

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James P. Syvertsen, Juan C. Melgar, and Francisco García-Sánchez

C ), and water use efficiency (WUE) of most crop plants can be increased when plants are grown in elevated CO 2 (eCO 2 ), but at the same time, leaf transpiration ( E lf ) and plant water use usually are decreased ( Bowes, 1991 ; Chen and Lenz

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Stefania De Pascale, Luisa Dalla Costa, Simona Vallone, Giancarlo Barbieri, and Albino Maggio

ET. Water use efficiency can be improved by modifying both terms of the ratio. Agronomic techniques aimed at reducing water losses (at irrigation, field or plant levels) and effectively conveying water to the root zone will increase WUE. Similarly any

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Francisco M. del Amor and María D. Gómez-López

had three plants with three self-compensating, 4-L·h −1 drip emitters. Each plastic bag (≈40 L) was filled with the appropriate substrate. Climatic measurements, water uptake, and water use efficiency. The greenhouse temperature was recorded by a

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Youssef Rouphael, Giampaolo Raimondi, Rosanna Caputo, and Stefania De Pascale

meter (LI-3000; LI-COR, Lincoln, NE). The number of harvested stems, leaves, and flowers and the stem length were also recorded. The evapotranspiration water use efficiency (WUE ET ) and the effective WUE S were calculated as the ratio of plant total

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Furn-Wei Lin, Kuan-Hung Lin, Chun-Wei Wu, Yu-Sen Chang, Kuan-Hung Lin, and Chun-Wei Wu

irrigation (RDI). Table 2. Effects of different concentrations of betaine on the gas exchange parameters and water use efficiency (WUE i , WUE yield , WUE biomass ) of lettuce under full irrigation (FI) and regulated deficit irrigation (RDI). Fig. 1. Effects

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Krishna S. Nemali and Marc W van Iersel

[IE (the ratio of the amount of water retained in the substrate to the volume supplied in irrigation)] and the water use efficiency (WUE) of bedding plants (the efficiency which with plants use water to produce dry matter). IE is reduced by leaching

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John E. Erickson and Kevin E. Kenworthy

efficiency with which that water is used to produce turf biomass may also contribute to improved water conservation. Water use efficiency is a measure of carbon assimilated per unit of water transpired by the plant ( Stanhill, 1986 ) and can be measured

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Mathieu Ngouajio, Guangyao Wang, and Ronald G. Goldy

irrigation water use efficiency (IWUE) can reduce water shortages and increase water availability for other purposes while decreasing input costs. Insufficient water supply during the growing period may reduce crop production and quality ( Debaeke and