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The use of LEDs can be promising for greenhouse horticulture, but before it can be put into practice on a large scale more knowledge must be acquired on effects of LED lighting on crops. Furthermore, the growers will have to learn to grow their crops under LEDs and the efficiency of LEDs must increa
Lake Victoria (in East Africa) is the world's second largest fresh-water system. Over the past century the ecosystem has undergone drastic changes. Some 30 years after the introduction of Nile perch and tilapia in the 1950s, the highly diverse community of native haplochromines collapsed, leaving a
Abstract NL In een vroege teelt met komkommer is bij Wageningen UR Glastuinbouw in Bleiswijk nagegaan wat het effect is van diffuus glas met een haze van 71% op productie, kwaliteit en energiegebruik. Er is vergeleken met een kas gedekt met standaardglas en een gelijke lichttransmissie. De proef du
There is a great deal of interest for diffuse glass in Dutch horticulture ever since higher light transmission values and the diffusing characteristics of diffuse glass have increased production for some crops. Thus an experiment was designed to examine the effects of a variation in haze factors and
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