Stone
Well-Known Member
I have been giving P/N ratio of approx. 1.5 to 1.8. I have increased it lately to about 2.5 to 3. ( to work out the P/N ratio of an NPK fert just divide the %P X the % N)
Most flowering plants are said to get by quite well with 1.5 to 1.8 and Phals, for example, closer to 2 (based on leaf concentrations)
However it has not gone unnoticed that some growers seem to have spectacular results with very high P (for example 10 52 10) P/N 5.2!!!!!!!!!)
Xavier did mention good results on some parvies and brachys with this kind of ratio but never gave a suggestion as to why this might be. (Xavier....?)
Most of what I read on the subject says high P can be disastrous. What is going on? Anyone with a theory?
Most flowering plants are said to get by quite well with 1.5 to 1.8 and Phals, for example, closer to 2 (based on leaf concentrations)
However it has not gone unnoticed that some growers seem to have spectacular results with very high P (for example 10 52 10) P/N 5.2!!!!!!!!!)
Xavier did mention good results on some parvies and brachys with this kind of ratio but never gave a suggestion as to why this might be. (Xavier....?)
Most of what I read on the subject says high P can be disastrous. What is going on? Anyone with a theory?