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Jongyun Kim, Marc W. van Iersel, and Stephanie E. Burnett

.S. growers use efficient irrigation systems such as drip irrigation (41%) or subirrigation (5%), overhead irrigation still prevails (63%) in greenhouse and nursery production of ornamental plants ( Hodges et al., 2008 ). Soil moisture sensor-based automated

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Toshio Shibuya, Akihito Sugimoto, Yoshiaki Kitaya, and Makoto Kiyota

resulting from high VPD. We developed a new technique to measure leaf conductance continuously based on weight of the plant community and absolute humidity near the leaf surface, which was measured with tiny humidity sensors. Materials and Methods Plant

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Tracy A. Boyer, D. Harshanee W. Jayasekera, and Justin Q. Moss

reducing water use ( White and Fane, 2007 ). Other technological studies in horticulture dealt with understanding the potential for conservation among different technological fixes such as rain sensors, SMS, and SIC ( Grabow et al., 2013 ). In sum

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Nastaran Basiri Jahromi, Forbes Walker, Amy Fulcher, James Altland, and Wesley C. Wright

initiating the automatic sensor-based irrigation program. One week after transplanting, plants were top-dressed with 18N–2.6P–9.9K controlled release fertilizer with micronutrients (Osmocote Classic; Everris, Marysville, OH) at 24 g per container, which

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Bandara Gajanayake, K. Raja Reddy, Mark W. Shankle, and Ramon A. Arancibia

°28′ N, long. 88°47′ W), Mississippi. The temperatures in the greenhouse were maintained between 24 and 33 °C during the experimental period, May to June 2012. The photosynthetically active radiation measured with a line quantum sensor (LI-191 Line

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Nastaran Basiri Jahromi, Amy Fulcher, Forbes Walker, James Altland, Wesley Wright, and Neal Eash

; Welsh and Zajicek, 1993 ); and/or an increase in leachate volume, which can cause an increase in nutrient losses. Improving irrigation efficiency can be achieved by scheduling irrigation with the appropriate use of sensors rather than by relying on

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Rhuanito Soranz Ferrarezi, Thomas C. Geiger, Jayar Greenidge, Shamali Dennery, Stuart A. Weiss, and Gustavo H.S. Vieira

monitored to evaluate potential differences under the driplines using 36 capacitance sensors (24 10HS and 12 GS3; Decagon Devices, Pullman, WA) installed at a depth of ≈20 cm in the soil. The monitoring system was built using a data logger (CR1000; Campbell

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C. Campillo, M.H. Prieto, C. Daza, M.J. Moñino, and M.I. García

regions, each with its own characteristic properties. Appropriate procedures and sensors must be chosen according to the specific objectives of the radiation measurements ( Jones et al., 2003 ). Visible radiation, between the wavelengths of 400 and 700 nm

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Said A. Hamido, Kelly T. Morgan, Robert C. Ebel, and Davie M. Kadyampakeni

(Decagon Devices, Pullman, WA) at incremental soil depths of 0–15, 15–30, and 30–45 cm. Soil moisture was measured using EC-5 soil moisture sensors at 0–15- and 15–30-cm depths and an HS-10 sensor at the 30–45-cm depth (Decagon Devices). Total available

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Katherine F. Garland, Stephanie E. Burnett, Michael E. Day, and Marc W. van Iersel

occur in plants exposed to high light or, conversely, plants growing in low light may experience periods of excessive water supply ( Burnett and van Iersel, 2012 ). Capacitance sensor automated irrigation systems ( Nemali and van Iersel, 2006 ), which