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 413728
Title Can lysimeters be used to reduce emission in soil based glasshouse horticulture?
Author(s) Voogt, W.; Heinen, M.; Balendonck, J.; Klap, J.; Welles, H.
Source In: Proceedings of the Wageningen Conference on Applied Soil Science - Soil Science in a Changing World - 18 - 22 Sept. 2011, Wageningen, The Netherlands. - Wageningen : Wageningen UR - ISBN 9789461731685 - p. 259 - 259.
Event Wageningen : Wageningen UR - ISBN 9789461731685 Soil Science in a Changing World, Wageningen, the Netherlands, 2011-09-18/2011-09-22
Department(s) WUR GTB Gewasfysiologie Management en Model
SS - Soil Physics and Land Use
WUR GTB Tuinbouw Technologie
Publication type Abstract in scientific journal or proceedings
Publication year 2011
Abstract The ecological surface water quality in areas with intensive glasshouse horticulture in the Netherlands is not fulfilling the goals of the EU Nitrates Directive and Water Framework Directive. Opposite to soilless grown crops with obligatory recycling of drainage water, emission in soil based growing systems is difficult to manage. For some crops the conversion from soil based to soilless systems is economically (e.g., chrysanthemums) or principally (organic horticulture) not an option. In the Netherlands a steady approximately 20% of the total glasshouse horticulture is therefore soil based. Since greenhouse production occurs yearround and at a high level, the amounts of water and nutrients used are much higher than in field crops. Thus emission of excess water and nutrients to the ground water and open surface water is likely to occur. The Dutch policy is aiming to tackle the problem of emission at its source. Therefore, we need methods to apply water and nutrients at rates equal to the crop demand. We recently started a project to develop a decision support system for the growers for achieving this goal and thus to minimize the leaching to the ground water and discharge to open surface water. The system exists of a lysimeter in the glasshouse to collect excess water and nutrients, water content sensors inside and outside the lysimeter, and models to determine, guide and predict evapotranspiration and leaching. At eight commercial farms the system has been implemented. Via local discussion groups neighboring growers can discuss the findings obtained at the test locations. These discussions are then used to further develop the decision support system and to develop best practices for the growers. We will present our approach and give some first illustrative results.
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