Is there any conventional way of finding N,C,P,K,H concentration of organic material without using spectrometer, elemental analyzer or infrared analyzer? i mean any traditional way?
That leaves only gravimetric and titrimetric procedures. You can find many examples in the litterature.
http://www.ecs.umass.edu/cee/reckhow/courses/572/572bk15/572BK15.html
http://chemistryhq.wikifoundry.com/page/Gravimetric+Determination+of+Phosphorus+in+Plant+Food
https://en.wikipedia.org/wiki/Kjeldahl_method
http://www.jbc.org/content/121/2/631.full.pdf
thank you
You can use Dumas method for estimation of Nitrogen which is more aaccurate than Kjaldah'ss method.
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