Nitrate Nitrogen (NO3N) potato petiole
Nitrate Nitrogen (NO3N) All other plant petioles or roots
Total Combustion Nitrogen (TN) or Total Kjeldahl Nitrogen (TKN) For all plant leaves
NO3N or TN, P, K
NO3N or TN, P, K, S
NO3N or TN, P, K, S, Zn
NO3N or TN, P, K, S, Zn, Mn, Cu
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na, B
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na, B, Fe
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na, B, Fe, Cl
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na, B, Fe, Cl, Al
NO3N or TN, P, K, S, Zn, Mn, Ca, Mg, Cu, Na, B, Fe, Cl, Al, Mo
Calculated from Total Nitrogen
Note: with each test group # please indicate which Nitrogen Test is desired