Scientific Papers Series B Horticulture

Measurement of water consumption. Each vasewas labeled indicating the type of preservativesused and also used a scale on the vase, so wecould see the daily water consumption. In orderto avoid evaporation respectively to reduceevaporation to the minimum, we wrapped thevases in a double layer of foil.RESULTS AND DISCUSSIONSHumidity in the lab was monitored by thePhyto-monitoring system and GTH 2, so itvaried between 43-52%. Water temperatureshowed a close correlation with the valuesrecorded in air, ranging from 22 to 25°C. Leaftemperature started as being lower than airtemperature (by 0,5 to 1,5°C), but graduallyincreased towards the end of the experiment aswithering set in.Leaf temperature was recorded and measuredby the Phyto-monitoring system. There seemsto be a similar tendency among the floralpreservatives applied. Nevertheless, we noticeddifferences in the order of wilting: first, on the9 th day sample Control took ambientaltemperature (21°C), then on the 12 th day sampleSapientia and on 13 th sample Oasis followed.Bioplant withers after 14 days. Only sampleChrysal maintains its beauty throughout theexperiment.Figure 3. Water consumption dynamicsFigure 1. Ambient conditions during the experimentThe highest water consumption was recorded inthe experiment especially with Chrysal whichconsumed 1680 ml of water in 16 days. Thenfollowed Sapientia and Control with aconsumption of 700 ml of water and finallyBioplant consumed 650 ml and Oasis 600 ml ofwater.Figure 2. Leaf temperatureFigure 4. Daily water consumption341