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 421614
Title A methodology for model-based greenhouse design: Part 4, Economic evaluation of different greenhouse designs: a Spanish case
Author(s) Vanthoor, B.H.E.; Gázquez, J.C.; Magán, J.J.; Ruijs, M.N.A.; Baeza, E.; Stanghellini, C.; Henten, E.J. van; Visser, P.H.B. de
Source Biosystems Engineering 111 (2012)4. - ISSN 1537-5110 - p. 336 - 349.
Department(s) ATV Farm Technology
Wageningen UR Greenhouse Horticulture
LEI SECT & OND - Prestatie en Perspectief Agrosectoren
WUR GTB Tuinbouw Technologie
WUR GTB Gewasfysiologie Management en Model
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) yield model - climate - crop
Abstract An economic model was developed as a key component of a model-based method to design greenhouses for a broad range of climatic and economic conditions. This economic model was linked to an existing greenhouse climate-crop yield model to calculate the annual Net Financial Result (NFR) of a greenhouse. The aim of this study was to identify – among ten predefined design alternatives – the greenhouse with the highest annual NFR for tomato production under southern Spanish conditions. The basic designs were either the parral greenhouse, or a multi-tunnel, possibly fitted with any combination of heating, fogging and CO2 enrichment. Results demonstrated that the multi-tunnel, fitted with only a fogging system was most profitable, followed by the multi-tunnel with heating, CO2 enrichment and fogging. However, the difference in NFR between such a design and a simple parral was small with respect to the difference in investment. A sensitivity analysis of the NFR of the two technology extremes shows that tomato price, the fraction of marketable yield and the Photosynthetically Active Radiation (PAR) transmission of the cover had the largest bearing on NFR. With increasing technology level, the NFR depended less on outdoor climate and more on tomato price. This indicates that a low-tech greenhouse diminishes the risk of variations among price paths in different years, whereas a high-tech greenhouse covers better the “weather risk”. The best design was also affected by climate management and the joint impact of climate modification techniques. These results demonstrated that a model-based design approach can cope with multi-factorial design aspects
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