A garden is only as good as the ground that it's planted in. Discussion forum for the many ways to improve the soil where we plant our gardens.
|
|
Thread Tools | Display Modes |
March 13, 2012 | #16 |
Tomatovillian™
Join Date: Jan 2007
Location: PNW
Posts: 4,743
|
There is a calculator which matches fertilizer N-P-K and how much one
uses per gallon for liquid or soluble fertilizers to what ppm (parts per million) of each of N-P-K and TDS one is adding to the soil or grow media: http://www.firstrays.com/fertcalc.htm For fertilizers like 13-13-13 granular or pelleted or prilled, it does not all dissolve at once, so you cannot really apply whatever formula the calculator is based on to those kinds of fertilizers. There is an amount of 13-13-13 one could add to keep phosphorous ppm down at 50 ppm or below, but it would be different for each soil, each grow media for containers, it would vary with how fast the 13-13-13 from a specific manufacturer releases its nutrients at various temperatures, how much water flows through soil or container media over time (dissolving more fertilizer), and so on.
__________________
-- alias |
Thread Tools | |
Display Modes | |
|
|