Vroege komkommerteelt onder diffuus glas

In an early cucumber crop at Wageningen UR Greenhouse Horticulture in Bleiswijk, the effect of diffuse glass with a haze of 71% to production, quality and energy consumption was studied. The effects of diffuse glass were compared with those in a greenhouse covered with standard glass and the same light transmission. The trial lasted from the end of December to the end of April. The first stem fruits under diffuse glass flowered earlier and the growth duration was half a dayshorter on average. From the first harvest onwards, production was higher under diffuse glass. In the end, a production increase of 6% was realized, 4% more fruits and 2% heavier fruits. The fruit quality under diffuse glass was not affected. The measured light transmission in the diffuse glass greenhouse was on average 2.5% higher than in the reference. In the diffuse greenhouse 30 to over 350% more condensation was measured. The energy consumption increased by 5% under diffuse glass, but because of the higher production, the energy efficiency was the same as that of the reference greenhouse.