As Mary jane been around longer then anyone of us lol , we do out best to mimic mother nature so ?? With that said where on Earth is it 24 hrs all the time sunlight ? cause if we are wanting to duplicate mother nature then 24 hr lighting is not NORMAL .
Hrs leading up to darkness ,, plays a very crucial role for all plants
when the sun sets, the angle of the light hitting the earth's atmosphere is tilted. It changes from bright daylight (white) blue spectrum (450 nm) to amber or red at sunset (650 nm) which is basically a shorter wavelength and thus carries with it more photon energy.
Which triggers cues in the plant
That is why we need more red to flower (HPS during bud) and we need more white (Metal Halide) during veg stage. We are duplicating nature indoors. Basically humans developed in a similar way as we spend the day gathering food and expending energy. At night time, like cannabis, we metabolize this food to produce the energy to make new cells and repair the damaged ones we hurt during the day. We also use the night to produce very important enzymes and proteins and we wait for the sunrise to get to work or in a plants case, to start the day again photosynthesizing.
what the plant is really doing while it is sleeping is carrying out a cyclic process known as circadian rhythm from the Latin word meaning “approximately a day”. To take it one step further, all cells require metabolic energy in the form of what is called ATP or NADH. This energy is produced throughout the day and is the result of many biochemical processes, not just one. We all seem to concentrate on photosynthesis because we know it occurs during the daytime and we can understand that. Photosynthesis is the process of breaking down metabolic energy by using light energy (Produced during the day) to break apart water which generates O2, protons and electrons. Oxygen becomes the bus driver that transports all aerobic respiration and it is used to transport the electrons which in turn is used in the productions of those energy rich molecules known as ATP and NADH we talked about earlier.
So when all of this mixes together in photosynthesis, the Calvin cycle ( light) fixates or concentrates on CO2 to make what is called 3-Carbon sugars during this light cycle. Later during the darkness or “night cycle”, this 3-Carbon sugars are converted to 6-Carbon sugars such as glucose and fructose. Now the point should be clear and obvious. We need both the daylight for photosynthesis to occur and generate 3-Carbon sugars but we also need the darkness or night to finish the job and create 6-Carbon sugars to make glucose and fructose that is used to make cellular carbon or the bulk of ATP and NADH during aerobic respiration during the dark cycle. Does this make sense now?