NPK for Organic nutes same as NPK for chem nutes.

organics is not so much about the amount of fertilizer you feed the crops, but more about the general well-being of the soil and root stucture of the plant. real organics revolves around "fixing" bacteria and fungi to work harmoniously with the soil, breaking down the elements that you know as N-P-K as well as Mg, Fe, Ca, Cu and so on.

 

I think you are misunderstanding NPK.

These numbers represent the percentages of the substance in question (the fert, the soil, etc) that are nitrogen, phosphorous, and potassium respectively. A fert has higher numbers than a soil because the fert is concentrated so a higher percentage of the fert is made up of N, P, and K than a soil is.

The NPK has to do with the plant's needs and is not dependent on the medium or formulation delivering the nutes. In other words, plants need N, P, and K, and in certain proportions during certain times of the life cycle, whether they are being delivered by an organic substance or not.

The key to NPK numbers is not the absolute numbers, it is the ratios of the numbers to each other. A fert of 20-20-20 has the same balance as a fert of 10-10-10. Most likely, for two such ferts, the instructions on the first would tell you to use half as much as the instructions on the second so that the amount of actual N, P, and K you are delivering is about the same quantity.

For veg you want the first number (N) to be higher than the others. For flower you want (N) to be lower. A fert that flat-lines all three main nutes (equal percentages of each such as 20-20-20) is a general purpose garden fert and almost certainly is chemical-based.