Figure 10.

Measurement of microclimatic conditions within cannabis inflorescences (A) The hand-held Reed 8,706 psychrometer that was used to obtain measurements of temperature and relative humidity. The probe was inserted into the center of the inflorescence and held in place for 10 s. (B) Average relative humidity readings (top) and temperature readings (bottom) were taken over a 2-week period, four times a day, in the inflorescence (gray lines) compared to the ambient environment (blue lines) in the greenhouse. The measurements made from the inflorescence tissues (bud) of genotype “Pink Kush” were consistently higher at all time points compared to the ambient. (C,D) Measurements of relative humidity and temperature made over a 3-day period, four times a day, in inflorescences of four cannabis genotypes. The measurements made from the inflorescence tissues were consistently higher at all time points compared to the ambient control (yellow line). Note the daily fluctuations between day and night.