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

Ioanna Kakabouki, Angeliki Kousta, Antigolena Folina, Stella Karydogianni, Charikleia Zisi, Varvara Kouneli and Panayiota Papastylianou
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Ioanna Kakabouki: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Angeliki Kousta: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Antigolena Folina: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Stella Karydogianni: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Charikleia Zisi: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Varvara Kouneli: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece
Panayiota Papastylianou: Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece

Sustainability, 2021, vol. 13, issue 4, 1-13

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

Keywords: agronomic characteristics; Cannabis; CBD content; fertilizers; nitrogen inhibitors (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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