That’s not really how soil works. What you need is a soil analysis, then you can calculate what amendments need to be added. If you want to go down that rabbit hole, I suggest you read The Intelligent Gardener by Steve Solomon.
The Intelligent Gardener: Growing Nutrient-Dense Food https://a.co/d/aPxM5oB
This is exactly why I start on a very low dose and bump a little each time I feed. 
@Motaco I haven’t had a chance to engage with the specifics in this post much yet but I’ll do my normal thing and point towards resources we can use to figure this out together:
This thread basically walks someone through your exact question and the math for it, along with considerations of elemental vs oxide forms and solubility/availability. I love finding these threads on ResearchGate forums or Quora where a bunch of PhDs from around the world all pitch in, the Southeast Asian and MENA agronomists always have the most patient and detailed answers while being super technical about it (shoutout to Drs Antoun and Rao). I find a lot of good tech stuff on these sites when I’m researching something. Hopefully this first link answers your question and the others are useful in doing the calculations for your particular soil.
https://www.researchgate.net/post/Calculation-of-fertiliser-for-potted-experiment
https://aesl.ces.uga.edu/soil/fertcalc/
https://www.haifa-group.com/fertilizer-conversion-calculator
@iceman thanks for the tag
@ReikoX is definitely someone you want to listen to on this one IMO
@FieldEffect is deep in this question right now too so maybe this is just the spring thing for us, what’s up with our dirt, mang?
Out of likes bro…I’m very happy u dropped by. 
Thanks for everyone’s help. This is much more complicated than I had imagined.
Call the manufacturer for the best answer.
@ReikoX I think this is the best soil literature I’ve read, just finishing it now. Writing style is straightforward with enough technical accuracy and engagement to be VERY productive. Some humor sprinkled in too. A+ Recommendation (it’s led me deeper into, and back out the other side of the VERY deep soil rabbit hole)
@Dirt_Wizard nice resources as always. Appreciate you jumping in to help us with our soil questions 
This topic is underrated…should be utilized more…lol…so I’ll go ahead…lol…
See post linked…