engleski

The influence of nitrogen on the agronomic traits of fibre flax cultivars

Cultivar trials with fibre flax were set up in three years (2008-2010) and in two locations: at the experimental fields of the Faculty of Agriculture in Zagreb on eutric cambisol and of the College of Agriculture at Križevci on pseudogley on level terrain. The aim was to determine the influence of nitrogen fertilization on the agronomic traits (dry stem yield, dry stem yield after retting, total fibre yield, share of total fibre, long fibre yield and share of long fibre) of five fibre flax cultivars. The selected cultivars were fertilized with different nitrogen rates (0, 30, 60 and 90 kg/ha) at different times. The trials were carried out according to the RCBD with four replications. According to the results of the three-years research into the agronomic traits of fibre flax, significant differences were established among the cultivars and among the added nitrogen rates under study. The cultivars Agatha, Viola and Electra recorded higher values of investigated traits (dry stem yield, dry stem yield after retting, total fibre yield, long fibre yield) in three years and share of total fibre and share of long fibre in one of two years. The optimal nitrogen rate for fibre flax according to the obtained results was 30 kg nitrogen ha-1.

cultivars ; dry stem yield ; Linum usitatissimum L. nitrogen fertilization ; share of total and long fibre ; total and long fibre yield.

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