Light: Difference between revisions

100 bytes added ,  27 January 2022
 
== Ideal light conditions ==
In the initial stages of growth when the plant is a seedling, it should be exposed to much less light than when in flowering. This is for photoacclimation[citation needed]
 
{| class="wikitable"
life stage | PPFD
|+Light over time
 
|Life stage
seedling | 100 - 400
|style="text-align:center;" | PPFD
 
|-
Flowering | 600 - 2000
|Seedling
|100 - 400 μmol/s
|-
|Flowering
|600 - 2000 μmol/s
|}
 
Once a plant moves into the vegetative stage the maximum light it can tolerate will be limited by other conditions such as CO2 level or nutrient deficiency.
<ref>High Light Intensities Can Be Used to Grow Healthy and Robust Cannabis Plants During the Vegetative Stage of Indoor Production (Moher, 2021) https://www.preprints.org/manuscript/202104.0417/v1</ref>
 
Temperature and light optima for photosynthesis were concluded to be at 25–30 °C and ∼1500 μmol m−2s−1m2/s respectively<ref> Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions (Chandra, 2008) https://dx.doi.org/10.1007%2Fs12298-008-0027-x</ref>
 
=== Upper limit of light intensity ===