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. 2019 Aug 29;14(8):e0221570. doi: 10.1371/journal.pone.0221570

Table 9. Cannabinoid contents (%) in floral buds of Fedora 17 in field conditions, Miracle-Gro, and mine land 1.

Cannabinoids Konopko* Field Miracle-Gro Mine Land 1
Outdoor Greenhouse Outdoor Greenhouse
Δ9-THC-A - < .01 0.06 0.42 < .01 0.12
Δ9-THC - < .01 < .01 0.03 < .01 0.02
Δ9-THCV - < .01 < .01 < .01 < .01 < .01
Δ8-THC - < .01 < .01 < .01 < .01 < .01
CBN - < .01 < .01 < .01 < .01 0.06
THC-TOTAL < .06 < .01 0.07 0.4& < .01 0.12
CBD-A - 0.26 1.22 1.8 2.47 2.89
CBD - < .01 0.01 0.02 < .01 0.05
CBDV-A - < .01 < .01 < .01 < .01 < .01
CBDV - < .01 < .01 < .01 < .01 < .01
CBD-TOTAL 1.5–2 0.23 1.08 1.6 2.16 2.58

* theoretical values from Table 1

- information not available

&any material that increased the THC levels due to heavy metal stress was destroyed