Defoliation is one of those things that are touted to make you feel good about your grow. Makes you feel like you are an artist cutting hair, trimming her like a bonsai king. She is a plant. A energy processing plant. The more energy she can collect and convert in a single cycle will determine 100% of the growth that can occur.
Every leaf holds mitochondria. The power cell. Every leaf you remove lowers potential. "OH but these leafs are not capturing light!" Each leaf has limited oxidative capacity. A leaf that is photosyhtesizing 100% efficiently cannot perform any cellular respiration. Cellular respiration is mostly considered a nigttime process but that's not true. It happens 24/7. The kicker being of she is photosyhtesizing she can't respire. So a leaf that is not in a optimal photosynthetic location can still perform cellular respiration 100% efficiently.
As soon as a leaf uses more energy than it can create it will be detached with the plant beginning programmed cell death, recycling all mobile nutrients within before turning yellow and falling off. We are not smarter than the plant.
Photosynthesis is all about capturing the carbon and creates 10% of all atp.
Cellular respiration is the daddy. Responsible for 90% of all atp.
Optimize vpd for daytime but it's 10x less effective at night. Maintaining a high rh at night and allowing temps to drop reduces cellular respiration to almost nothing. If rh reaches 75+ practically all gas exchange will cease.
Plant will be 100% reliant on daytime for its ATP.....only thing is you removed 100% of every leaf that could have performed cellular respiration but you defoliated so hard that every leaf is photosyntheticly active therefore the entire plant runs off that 10%. As very little cellular respiration occurs.
It's a over simplification but relevant none the less. You do whatever makes you feel warm and fuzzy. Just don't defoliate unless there is a reason to.
Having a huge surplus of energy for growth is what makes massive cola and buds. Stripping a plant of its power cells so that light and air can reach bud sites which will magically create more buds with 80% less atp...that's why a plant stretches.....no.....
ATP is king. Above all else. Anything else is just smoke.
ATP (adenosine triphosphate) is the primary energy carrier in cells, including plant cells. It powers various cellular activities like nutrient uptake, protein synthesis, and cell division. Without ATP, the plant's metabolic machinery would grind to a halt, regardless of the presence of nutrients, oxygen, or carbon. Nutrients, like nitrogen, phosphorus, and potassium, are essential for building plant tissues and various molecules. They are incorporated into proteins, nucleic acids, and other vital compounds. While crucial, their uptake and utilization rely on ATP-driven processes. Oxygen is vital for cellular respiration, a process that generates ATP. While plants can produce ATP through photosynthesis, oxygen is essential for maximizing ATP production in mitochondria through oxidative phosphorylation. Carbon is the backbone of all organic molecules, including carbohydrates synthesized during photosynthesis. It's the fundamental building block of plant structures and fuels. However, its incorporation into organic molecules is also ATP-dependent