Wielkość i jakość plonu bulw potomnych frezji z grupy Easy Pot w zależności od rodzaju i dawki nawozu
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Experiments were conducted in the years 2006–2007, in spring-summer season, in the unheated foil tunnel. Corms and cormlets of freesia from Easy Pot Group (‘Gompey’, ‘Popey’ and ‘Suzy’) were the plant material. The influence of traditional fertilizer Azofoska and the slow-release fertilizers Osmocote Plus 5/6M, Osmocote Exact and Polyon 5/6 was evaluated in the experiments. Among all evaluated cultivars ‘Gompey’ was characterized by the greatest coefficient of corm number increase. Coefficient of corm weight increase depended on the size of planted corms. When freesia was cultivated from corms all fertilizers affected increase of both coefficients. Whereas, in experiments where cormlets were the plant material, Polyon affected decrease of the yield of freesia, independently on its dose. The greatest yield of corms was obtained when Osmocote Plus and Osmocote Exact were used, independently on cultivar, size of corms and dose of fertilizer.
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