Abstract

Abstract In the literature, various modifications of the standard Kjeldahl procedure for the determination of total nitrogen are used to include nitrate‐N in soil and plant samples. This study suggests that these modifications, which are usually time consuming and tedious, are not necessary in the case of dry soil samples. However, if total‐N (including nitrate‐N) is to be measured in dry plant samples then the use of one of the modifications is essential.

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