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Fixed ammonium and carbon-nitrogen ratios of some semi-arid tropical Indian soils

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Relation http://oar.icrisat.org/3976/
http://dx.doi.org/10.1016/0016-7061(95)00031-I
 
Title Fixed ammonium and carbon-nitrogen ratios of some semi-arid tropical Indian soils
 
Creator Sahrawat, K L
 
Subject Soil Science
Fertilizer Appications
 
Description The distribution of fixed NH4-N and C:N ratios of soil profiles from two benchmark Vertisols and one Alfisol in India was studied. From 15.9 to 58.6% of the total soil N was present as fixed NH4-N in the Vertisol profiles; the range was from 13.3 to 30.8% in the Alfisol profile and a higher percentage of fixed NH4-N was found in the lower horizons. A method based on the extraction of soil samples with dilute HF solution was suitable for determining fixed NH4-N in these soils. Organic C:total N ratios varied from 7.7 to 12.8 in the three profiles while the organic C:organic N ratios varied from 9.4 to 21.4. The results emphasize the importance of fixed NH4-N in assessing the N-status of the soils
 
Publisher Elsevier
 
Date 1995
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3976/1/Geoderma_68_3_219-224_1995.pdf
Sahrawat, K L (1995) Fixed ammonium and carbon-nitrogen ratios of some semi-arid tropical Indian soils. Geoderma, 68 (3). pp. 219-224. ISSN 0016-7061