Book of A bstracts th 7 International Symposium on Light in Horticultural Systems ISHS Lightsym2012 14th-18th October 2012 Wageningen, The Netherlands 1 2 3 4 5 6 1 Sweet pepper year round production with artificial light, Wageningen UR Greenhouse Horticulture 2 Gerbera flower with ultra-small temperature and humidity sensor, Wageningen UR Greenhouse Horticulture 3 Cucumber production with Light Emitting Diodes (LED), Wageningen University Horticultural Supply Chains 4 Anthurium production with High Pressure Sodium light (HPS), Wageningen UR Greenhouse Horticulture 5 Gerbera year round cut flower production with artificial light, Wageningen UR Greenhouse Horticulture 6 Spathiphyllum year round pot plant production with artificial light, Wageningen UR Greenhouse Horticulture 1 th Proceedings of the 7 International Symposium on Light in Horticultural Systems (ISHS Lightsym2012) Convenors S. Hemming E. Heuvelink 14th-18th October 2012 Wageningen, The Netherlands 2 FOREWORD The 7th International Symposium on Light in Horticultural Systems has been organized by Wageningen University and Research Centre in Wageningen, The Netherlands, from 14 to 18 October 2012. More than 180 symposium participants come from 27 countries involving scientists, greenhouse industry, advisors and growers. Light plays an important role in market-oriented greenhouse production. Products have to be ready for the market on time with the desired volume and quality. In order to meet with these requirements, an optimal use of light as one of the most important production factors is of utmost importance. Natural light is free and its utilization in greenhouse horticulture is necessary for sustainable crop production. The addition of supplementary artificial light however, will remain necessary in several regions of the world. By manipulating light we are able to control and steer crop growth and development. Changing the factor light has a large impact on the total production system: microclimate and energy consumption are influenced, costs and benefits are affected. Research on light in horticultural systems is necessary for a sustainable and market- oriented greenhouse production in the future. The symposium includes three days of scientific presentations, among which 7 invited speakers, 4 selected company presentations, 42 oral presentations and 129 poster presentations. During an one day excursion three different tours to modern greenhouse production facilities in different regions of The Netherlands are organized. We visit growers with artificial light, with modern LEDs, our research station in Bleiswijk and our research labs in Wageningen. All tours are combined with a touristic highlight in that region. We hope that you all enjoy your stay in The Netherlands. On behalf of the Organizing Committee With lighting wishes, S. Hemming E. Heuvelink Convenor Co-convenor 3 Convenors Silke Hemming, Wageningen University and Research Centre Ep Heuvelink, Wageningen University and Research Centre Organising Committee Tom Dueck, Wageningen UR Greenhouse Horticulture Theo Gieling, Wageningen UR Greenhouse Horticulture Silke Hemming, Wageningen UR Greenhouse Horticulture Ep Heuvelink, Wageningen University Horticultural Supply Chains Wim van Ieperen, Wageningen University Horticultural Supply Chains Leo Marcelis, Wageningen UR Greenhouse Horticulture Wim van Meurs, former Wageningen UR Chantal Pont, Wageningen UR Greenhouse Horticulture Scientific Committee Esteban José Baeza Romero, Spain Arend-Jan Both, United States Demetres Briassoulis, Greece Susana Carvalho, Portugal Sergio Castellano, Italy Nicolas Castilla, Spain Wei Fang, Taiwan Hans Ragnar Gislerød, Norway Marie González-Real, Spain Andrè Gosselin, Canada Eiji Goto, Japan Dennis Greer, Australia Svein Olaf Grimstad, Norway Katrine Heinsvig Kjaer, Denmark Jantineke Hofland-Zijlstra, The Netherlands Constantinos Kittas, Greece Oliver Körner, Denmark Ryo Matsuda, Japan Peter Minchin, New Zeeland Cary Mitchell, United States Jorunn E. Olsen, Norway Hendrik Poorter, Germany Eva Rosenquist, Denmark Erik Runkle, United States Liisa Särkkä, Finland 4 Sadanori Sase, Japan Ad Schapendonk, The Netherlands Evelia Schettini, Italy Uwe Schmidt, Germany Rob Schouten, The Netherlands Josepha Shahak, Isreal Jung Eek Son, Korea Gert-Jan Swinkels, The Netherlands Yüksel Tüzel, Turkey Irene Vänninen, Finland Hiroyuki Watanabe, Japan Ernst Woltering, The Netherlands Qichang Yang, Canada Arturas Zukauskas, Lithuania We would also like to thank the following people for helping reviewing papers: L. Albrigh, USA F. Alferez, Spain J.W. Allen, England W. Amaki, Japan A. Azuma, Japan S.S. Bao, China T. Bartzanas, Greece D. Ben-Yakir, Israel K.J. Bergstrand, Sweden J. den Besten, The Netherlands T. Bornwaßer, Germany Z.H. Chen, Australia D.S. Craig, USA R. Chiarawipa, Thailand A. Christiaens, Belgium N. Domurath, Germany B. von Elsner, Germany R. Endo, Japan R.C. Ferreira, Brasil N. Fukuda, Japan J. Gajc-Wolska, Poland N. García Victoria, The Netherlands E. Gorbe, The Netherlands M.E. Giorgioni, Italy B.W.W. Grout, Denmark X. Hao, Canada R. Hernández, USA Y. Higuchi, Japan 5 S. Hikosaka, Japan T. Hisamatsu, Japan S.W. Hogewoning, The Netherlands T. Hoshi, Japan S.J. Hwang, Korea Y. Ibaraki, Japan P. Inthichack, Japan J. Janse, The Netherlands N. Katsoulas, Greece H.P. Kläring, Germany Y. Klopotek, Germany K. Kowalczyk, Poland S. van der Krol, The Netherlands W. Kromdijk, The Netherlands C. Kubota, USA Z. Li, China W. Liu, Canada P. Lootens, Belgium J. López-Marín, Spain R.G. Lopez, USA N.S. Mattson, USA E. Meinen, The Netherlands G. Moreira Neve, Finland S.J. Nahar, Japan Y. Nishimura, Japan C.L. Norling, New Zealand R.C.O. Okello, The Netherlands R. Paradiso, Italy M. Rantanen, Finland G. Samuolienė, Lithuania A. Savvides, The Netherlands B. Schamp, Belgium H.J. Schärer, Switzerland H.K. Schüssler, Sweden I. Seginer, Israel K. Shoji, Japan A. Solomakhin, Russia C. Stadler, Iceland A. Suthaparan, Norway M.I. Sysoeva, Russia H.-J. Tantau, Germany C. Taylor, The Netherlands G. Taylor, The Netherlands M. Teitel, Israel S. Torre, Norway 6 G. Trouwborst, The Netherlands A.I. Velez-Ramirez, The Netherlands M.J. Verheul, Norway P.H.B. de Visser, The Netherlands M. Vitali, Italy G. Vox, Italy J.J. Wargent, New Zealand X.M. Wei, China I. Witkowska, The Netherlands C.C. Wu, Taiwan A.M. Wubs, The Netherlands Yano, Japan 7 Our sponsors are: Main Sponsors 8 9
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