Ability of nitrapyrin, dicyandiamide and acetylene to retard nitrification in a mineral and an organic soil

Sahrawat, K L and Keeney, D R and Adams, S S (1987) Ability of nitrapyrin, dicyandiamide and acetylene to retard nitrification in a mineral and an organic soil. Plant and Soil, 101 (2). pp. 179-182. ISSN 0032-079X

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Abstract

Laboratory experiments were conducted to evaluate the efficacy of nitrapyrin, dicyandiamide (DCD) and acetylene (C2H2) as nitrification inhibitors in a silt loam and oragnic soil with and without added NH4. Nitrapyrin (8 μg/g soil) and DCD (20 μg/g soil) were very effective in retarding nitrification of NH4−N in the silt loam soil during 14 days of aerobic incubation at 30°C. However neither nitrapyrin, (20 μg/g soil) nor DCD (20 or 100 μg/g soil) were effective in retarding NO3 production in the organic soil not amended with NH4. Dicyandiamide was moderately effective in retarding nitrification (39% inhibition) at 100 μg/g concentration but nitrapyrin at 20 μg/g rate had little effect (8% inhibition) on nitrification in the organic soil amended with NH4. In a separate experiment C2H2 was a very effective inhibitor in both soils when present in the flask atmosphere at 0.1% or 1% (v/v).

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: nitrification inhibitors - histosol
Subjects: Others > Soil Science
Others > Fertilizer Applications
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 15 Nov 2011 13:59
Last Modified: 17 Nov 2011 06:00
URI: http://oar.icrisat.org/id/eprint/3962
Official URL: http://dx.doi.org/10.1007/BF02370642
Projects: UNSPECIFIED
Funders: College of Agricultural and Life Sciences , National Science Foundation (NSF), USA
Acknowledgement: Research supported by the College of Agricultural and Life Sciences and by the National Science Foundation (DEB 7817404).
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