DEVELOPMENT OF SOILLES POINSETTIA CULTURE

Abstract

Poinsettia (Euphorbia pulcherrima) is getting more popular. Its decorative upper leaf rosettes are colourful (red, pink, white This is typically a short day plant. It is a water demanding plant, so it can be used in hydroponics. This growing method is getting more importance in our days, because closed-cycle system satisfies the strictest environmental requirements. The growing was taking place in two growing houses, the French Filclair plastic house and Prmeur-1 German glass house.The purpose of the research was to compare varieties and the effect of the two growing houses. According to our findings the height of 'Freedom Red' – as a medium growth variety- exceeded that of 'Cortez Red' and 'Cortez White' varieties. The number of laves of 'Cortez White' variety exceeded the two other varieties. As for the diameter of the rosettes 'Freedom Red' variety had the best quality, as these were the biggest. By comparing the two growing houses (Filclair plastic and Primeu-1) we found that growing houses did not influence the quality (height, number of leaves, diameter of upper leaves) of the flowers at any of the 3 varieties.