Effect of Fertilization with Urea and Inhibitors on Growth, Yield and CBD Concentration of Hemp (Cannabis sativa L.)

Field experiments were conducted during 2019 in two different locations Greece (Athens and Farsala) to evaluate the effect of urea fertilization with inhibitors on agronomic yield quality characteristics cannabis varieties (Cannabis sativa L.), “Uso31”and “Fedora 17”. The experimental design was split-plot four treatments—control, Urea (U), Urease Inhibitor (UI), Nitrification (NI) urease inhibitor (UI). significance differences between treatments estimated by using Tukey’s test a level p = 0.05. plant height significantly affected fertilizations as well locations. maximum 197 cm for 17”in Farsala. seed higher forthe treatment both varieties. Cannabidiol (CBD) content fertilization—it 17” treatments. lowest CBD value 1.29% (control) highest 1.69% (urea NI + UI). In conclusion, varieties, it seems that has positive their growth, increase cannabidiol content.