ATP, Adenosine triphosphate is the result of respiration. When the plant breaks down glucose, produced during photosynthesis, the ATP is the energy the plant literally uses to grow.The claim was that P powers N through the plant. From what point to where im not sure....i cant remember the literature i was reading..is ATP created with P as the center molocule?
All plant need P, a good reference for ppm for an aqueous solution is Hoagland #1. Dr. Hoagland developed a great hydroponics solution decades ago and will produce outstanding results.