Your calculation is causing number rounding issue, should be (N * 18 / 9), (P * 18 / 9) and (K * 18 / 9) which perfectly gives you the more correct numbers of 60gr N, 20gr P, and 100g K per the kg
My hat is off to you, as wannabe farmers helper. Very interesting and helpful 👍. Please allow me assistance in acquiring the e book you were offering. I could not bring up the login for your kind offer.
Can you please make a video on how processed hairs (humans and animals) can be used as a very productive natural fertilizer. Indian politician Nitin Gadkari has created a 180 crore or $22M/year busines by even exporting this fertilizer to middle east. It's also used actively in some countries in Africa as this "gross" idea is gaining popularity. You can learn more about this by searching for "human hair fertilizer" in youtube search. It's not a joke or inhuman, but I will appreciate if you can make a dedicated video on this topic.
Interesting application, indeed.... Now , one can further fortifies it by mixing animals bones (Phosphorus and Calcium) and bit Potash , to make good NPK fertilizer.