Influence of agroclimatic conditions on content of main cannabinoids in industrial hemp (Cannabis sativa L.)

Abstract

In a six-year field experiment eight industrial hemp varieties were examined for ∆9-tetrahydrocannabinol (THC) and cannabidiol (CBD) contents. The study analyzed the influence of growing degree days (GDD), soil temperature at 5 cm, air humidity, and growing season precipitation on the levels of the main cannabinoids in this crop. Agroclimatic conditions do not influence THC and CBD contents in industrial hemp in the same way. THC synthesis and accumulation are under the significant positive influence of GDD and air humidity and under the negative influence of precipitation, while soil temperature at 5 cm has no significant effect on it. Soil temperature at 5 cm has a significant positive effect on the CBD content, as do GDD. Precipitation has a negative influence on the CBD content of industrial hemp, while air humidity has no influence on it.

U poljskim ogledima je tokom šest godina osam sorti industrijske konoplje ispitivano na sadržaj ∆9-tetrahidrokanabinola (THC) i kanabidiola (CBD). Analiziran je uticaj sume temperatura (growing degree days GDD), temperature zemljišta na 5 cm, vlažnosti vazduha i sume padavina tokom vegetacionog perioda na sadržaj glavnih kanabinoida. Agroklimatski uslovi ne utiču u istoj meri na sadržaj THC i CBD u industrijskoj konoplji. Sinteza i akumulacija THC protiče pod značajnim pozitivnim uticajem GDD i vlažnosti vazduha i negativnim uticajem sume padavina. Temperatura zemljišta na 5 cm nema značajnog efekta na sadržaj THC, ali zato signifikantno utiče na sadržaj CBD, isto kao i GDD. Suma padavina ima izražen negativan efekat, dok je uticaj vlažnosti vazduha na sadržaj CBD u industrijskoj konoplji zanemarljiv.