In my experiment (Stanford and Smith, 1972) I used CaCl2 for leaching (obtained NH4+ and NO3-) after this I used Nutrient solution and collected the leachate and determined again (NH4+ and NO3-). The problem is that how can I calcuate the mineral N from above information?
Replication of different treatments showing negative values of NO3- (in case of nutrient solution) and NH4+ (in case of CaCl2).
Please need your valuable suggestions and comments.
Thanks in anticipation.
Mariel has rightly suggested. The Kjeldahl method also permits the available nitrogen to be precisely determined in the plant and in the soil. The method of determination involves three successive phases which are, Digestion of the organic material to convert nitrogen into HNO3; Distillation of the released Ammonia into an absorbing surface or medium; Volumetric analysis of the Ammonia formed during the digestion process.
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