Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 426274
Title Towards a more sustainable, water efficient protected cultivation in arid regions
Author(s) Campen, J.B.
Source In: Proceedings of the International Symposium on Advanced Technologies and Management towards Sustainable Greenhouse Ecosystems Greensys2011. - Leuven : ISHS - ISBN 9789066053380 - p. 81 - 85.
Event Leuven : ISHS - ISBN 9789066053380 GreenSys 2011, 2011-06-06/2011-06-10
Department(s) WUR GTB Tuinbouw Technologie
Publication type Contribution in proceedings
Publication year 2012
Abstract The first step towards a more sustainable, water efficient greenhouse is made through the application of soilless culture. Numerous studies have shown that separating the root zone from the ground increases water efficiency up to 5 times since the process of irrigation is well controlled. Monitoring of the irrigation water and the drain water is an important aspect when applying this method. The ultimate system in terms of water saving is a closed greenhouse. No air exchange between the greenhouse air and the ambient is needed so no water is lost. Using a dynamic simulation model which acts as a virtual greenhouse, the operation of the Pad & Fan system and the closed greenhouse is evaluated under climate conditions in Riyadh. Water consumption is reduced by 95% and biomass production is increased by 75% due to the increased carbon dioxide level and the optimal climate. Almost 4 GJ of cooling is needed annually with a maximum cooling capacity of 650 W for the closed greenhouse.
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