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 352144
Title Toward an optimal control strategy for sweet pepper production 2. optimization of the yield pattern and energy efficiency
Author(s) Henten, E.J. van; Buwalda, F.; Zwart, H.F. de; Gelder, A. de; Hemming, J.
Source In: Proceedings of the Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006). - Leuven, Belgium : ISHS - ISBN 9789066056091 - p. 391 - 398.
Event Leuven, Belgium : ISHS - ISBN 9789066056091 The Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006), Wageningen, The Netherlands, 2006-10-29/2006-11-02
Department(s) ATV Farm Technology
Wageningen UR Greenhouse Horticulture
Publication type Contribution in proceedings
Publication year 2006
Abstract Sweet pepper production is characterized by large fluctuations in fruit yield in time. These fluctuations have a detrimental effect on the operational planning of labor at nursery level as well as on the efficiency of the supply chain. At the same time, the dependence of temperate zone greenhouse horticulture on fossil fuel needs to be reduced for long-term viability. Growers are aware of the fact that by modifying the indoor temperature, these fluctuations can be influenced, but the dynamics involved are complex and hard to master. Therefore, in practice the degree of control achieved is limited and sometimes obtained at the cost of a higher energy consumption. In this research, using the framework of optimal control theory and employing a sweet pepper production model, alternative temperature strategies were searched for with the aim of reducing production fluctuations and using a minimum amount of energy. The results obtained in this research indicate that fluctuations in sweet pepper production can be reduced using optimized temperature strategies, either by controlling production in one compartment or by controlling production in opposite phase in two compartments. By doing so, energy savings of 10% can be obtained. In contrast with standard horticultural practice, a striking feature of the optimized temperature trajectories is their considerable variation in time.
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