Skip to main content

The Effect of Electrical Lighting Power and Irradiance on Indoor‐Grown Cannabis Potency and Yield

Buy Article:

$43.00 plus tax (Refund Policy)

Abstract:  The floral development and potencies [Δ9‐tetrahydrocannabinol (THC) contents] of cannabis plants were compared when grown indoors under high‐pressure sodium lamps consuming electrical power at three densities (270, 400, and 600 W/m2). After a 3‐week vegetative phase, plants were grown for 8 weeks, with lamps maintaining an artificial day length of 12 h. Foliar and floral yields were measured. Gas chromatography was used to measure the content of the psychoactive cannabinoid THC. Mean yields per unit of electrical power in each lighting regime ranged from 0.9 to 1.6 g/W, the highest being achieved in the lowest irradiance regime. The individual potencies of the separated leaf and flower materials were not affected by increasing irradiance. However, there was a corresponding increase in the overall potency of the aerial plant tissue. This was because of the plants in brighter conditions producing a higher proportion of floral material.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Document Type: Research Article

Affiliations: GW Pharmaceuticals Ltd., Porton Down Science Park, Salisbury, Wiltshire, SP4 0JQ, U.K.

Publication date: 2012-05-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more