Plant processes: Difference between revisions

Most plants are constantly respiring and cannabis is no exception. In the process of respiration, plants uptake CarbonCO₂ and expel Oxygen. CO₂ is essential to otherthe processesprocess such asof photosynthesis. If a plant is exposed to less than 200ppm it will be unable to photosynthesize at all and will most likely die. Airflow/ or "wind speed" has a strong effect on the raterates of respiration and transpiration.<ref>https://doi.org/10.1016/S0273-1177(02)00747-0 - Effects of air current speed on gas exchange in plant leaves and plant canopies (2003)</ref> The rate of respiration is directly correlated with the stomata density on growing leaves.<ref>John W. Kimball, 2020. Gas Exchange in Plants. Available at: https://bio.libretexts.org/@go/page/5785 [Accessed March 11, 2022].</ref>

In a city typical Co₂ levels are around 400-450ppm. This is acceptable for a growing plant but raising levels above 1000ppm can increase growth rates by up to 30% when combined with sufficient light intensity by enabling higher rates of photosynthesis. For infomore on the limitation of low Co₂ at high levels of light intensity see: [[Light#Upper limit of light intensity|Upper limit of light intensity.]]