Journal of Agricultural Hemp Research

Author Disclosures

Texas State University provided funding for this study.


Effective germination and vigorous growth of hemp cultivars is paramount to cultivators’ ability to produce high-quality hemp products. Beneficial bacteria and fungi are known symbionts to plants and are used in regenerative agriculture to increase plant health and crop yield. This pilot study investigated the effect of microbial seed inoculation on germination rate, plant height, cured flower weight, and cannabinoid content of cannabidiol (CBD)-rich hemp (Cannabis sativa L). The experiment included a control and the following treatments: 1) seed inoculation of Great White â Premium Mycorrhizae (GW), 2) seed inoculation of vermicompost (V), and 3) seed inoculation of Great White â Premium Mycorrhizae and vermicompost (GW+V). There were no significant differences for germination rate or plant height across treatments. For cured flower weight, the GW+V and V groups had increased cured flower weight by 29.0% and 43.0%, respectively, while the GW treatment had 4.4% more weight than the control group. Preliminary results indicate that the GW+V and V treatments had higher total tetrahydrocannabinol (THC) and CBD content than the control at 17.6% and 19.0%, and 17.6% and 12.1%, respectively. These results suggest further investigation is needed to determine if seed inoculation is advantageous for hemp cultivators.



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