Tomato Yield in a Closed Greenhouse and Comparison with Simulated Yields in Closed and Conventional Greenhouses
| Autor: | A. de Gelder, Ep Heuvelink, J.J.G. Opdam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Horticultural Supply Chains
Yield (engineering) Crop growth modelling Crop yield Wageningen UR Greenhouse Horticulture Greenhouse Production Leerstoelgroep Tuinbouwproductieketens Horticulture Wageningen UR Glastuinbouw Tomato Energy efficiency Agronomy Co2 concentration Environmental science Forced-air Closed greenhouse Transpiration |
| Zdroj: | Acta Horticulturae, 2005(691), 549-552 Acta Horticulturae 2005 (2005) 691 |
| ISSN: | 0567-7572 |
| Popis: | In 2002 tomato was cultivated in a closed venlo-type greenhouse to investigate the influence of cooling with forced air movement along heat-exchangers combined with high CO2 level under summer light conditions on production and quality. Transpiration in the closed greenhouse with forced air movement was, compared to a conventional greenhouse, higher at low light levels (2 instead of 1 kg/m 2 ) and lower at high light levels kg/m 2 (4 instead of 5 kg.m 2 ). Comparison of the observed yield with crop yields predicted with TOMSIM showed that yield was increased by 22% from 46.2 to 56.2 kg/m 2 compared to a conventional greenhouse with CO2 concentration always above 500 ppm. The higher CO2 concentration in the closed greenhouse (always 1000 ppm) could explain only a 9% yield increase. |
| Databáze: | OpenAIRE |
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