Variability of cannabinoid yields of fibre hemp cultivars depending on the sowing density and nitrogen fertilisation

The aim of the experiments was to determine effect sowing density and nitrogen fertilisation on cannabidiol (CBD) Δ9-tetrahydrocannabinol (Δ9-THC) yields in selected cultivars fibre hemp. A three-factor field experiment conducted 2014-2016. Factor A: cultivar (Futura 75, KC Dora Tygra), factor B: (60 180 seeds/m2) C: (0, 30, 60 90 kg/ha). CBD yield ranged from 10.52 g/m2 cv. Tygra 10.99 Dora. Among examined cultivars, highest Δ9-THC observed. Sowing did not modify yield, but increasing seeds/m2 caused an increase cvs. Tygra. Nitrogen significantly influenced Δ9-THC. In both cases, increased until rate kg N/ha.