Possibilities for increasing the yield and quality of asters (Callistephus chinensis L.) cut flower

N. Miteva, O. Tafradziiski
Abstract. Asters (Callistephus chinensis L.) are one of the basic annual sorts for growing in the open with big economic importance for getting cut flower. This is defined not only by their high decorative qualities because of the variety of structure and colouring of the raceme but also by their usage. The aim of the present paper is to study the influence of nitrogen fertilization on the vegetation and generational activities of the plants. Experiments were carried out as field tests. The results show that a higher dosage of nitrogen stimulates plant growth. It has also been established that mineral fertilization has a positive effect on the size of the raceme – larger racemes with bigger tubular discs are formed with many more lingulated petals, defining the fascicularity of the plants.