The part of my brain called the hypothalamus sees this drop in plasma osmolality and tells the pituitary gland to slow down the release of ADH (that's enough! ) .
When adenosine docks to these receptors, it activates a cascade of biochemical reactions that cause neurons to fire more sluggishly and slow the release of important brain signaling molecules.
You'll see either encapsulated or a coated nitrogen and that will give you slow release and then the other 60 to 70% of the nitrogen will be fast release for a good quick green up the rest of the fall.