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Transformation of a Coal Fertilizer Ammonium Polycarboxylate and Potentialities of Coal Produced Nitrification Inhibitors

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Relation http://oar.icrisat.org/6307/
http://indianjournals.com/ijor.aspx?target=ijor:jisss&volume=41&issue=1&article=008
 
Title Transformation of a Coal Fertilizer Ammonium Polycarboxylate and Potentialities of Coal Produced Nitrification Inhibitors
 
Creator Patra, A K
Jain, J M
 
Subject Soil Science
Fertilizer Appications
 
Description A laboratory experiment was conducted on a Typic Ustochrept soil to study the transformation of a coal fertilizer ammonium polycarboxylate (AMP) and efficacy of coal acids (CA) and nitrohumic acid (NHA) as nitrification retardars. During 35 days (d) of incubation period, at field capacity AMP showed lower soil NH4+-N and NO3−-N than urea. Difference in NH4+-N and NO3−-N contents between urea and AMP gradually narrowed down with time. From 28d onwards AMP showed slightly higher (NH4+)-N than urea. Both CA and NHA inhibited effectively NH4+-N oxidation up to 28d. Under flooding, all the treatments showed maximum soil NH4+-N on 7d except AMP. Up to 14d NH4+-N content was in thefollowing sequence: urea + CA > urea + NHA ≈ urea > AMP > control. From 21d, AMP was superior to rest of the sources. The CA was more effective than NHA under flooding. Average soil NO3−-N content was
 
Publisher Indian Sociely of Soii Science
 
Date 1993
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/6307/1/JindSSS_41_1_38-41_1993.pdf
Patra, A K and Jain, J M (1993) Transformation of a Coal Fertilizer Ammonium Polycarboxylate and Potentialities of Coal Produced Nitrification Inhibitors. Journal of the Indian Sociely of Soii Science, 41 (1). pp. 38-41. ISSN 0019-638X