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Evaluation of distilling the entire digest or an aliquot for total nitrogen determination in soil digests

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Relation http://oar.icrisat.org/3949/
http://dx.doi.org/10.1007/BF01080684
 
Title Evaluation of distilling the entire digest or an aliquot for total nitrogen determination in soil digests
 
Creator Sahrawat, K L
Pardhasaradhi, G
Murthy, K V S
 
Subject Soil Science
Fertilizer Appications
 
Description Accurate and easy to adapt methods of total soil N determination are a prerequisite for N balance research.
For JSN balance studies certain modifications of the regular methods are generally adopted, e.g. the
distillation of an aliquot of the digest in preference to the entire digest. However, comparative evaluation
of such methods has not been investigated. In this study, three methods of distilling soil digests were
evaluated for the determination of total N in diverse Alfisols and Vertisols. These are distillation of a clear
aliquot (suspended materials allowed to settle) of the digest, distillation of an aliquot with suspended
materials, following digestion in a block digestor, and distillation of the entire digest following macro-Kjeldahl
digestion. The total N content of soils were determined to be similar whether the aliquot distilled was a clear solution or a suspension with solid materials, and these results were similar to those obtained by distilling the entire digest. The precision obtained by the three methods of distillation was similar for the Vertisols but for the Alfisols, distillation of the clear aliquot of the digest was found to be most precise
 
Publisher Kluwer Academic Publishers
 
Date 1989
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/3949/1/FertilizerRes_19_1_39-43_1989.pdf
Sahrawat, K L and Pardhasaradhi, G and Murthy, K V S (1989) Evaluation of distilling the entire digest or an aliquot for total nitrogen determination in soil digests. Fertilizer Research, 19 (1). pp. 39-43. ISSN 0167-1731