Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094

February 2014 Vol. 3(2): pp. 035-041

Copyright © 2014 Global Advanced Research Journals



The use of earthworms and biochar to mitigate increase in nitrous oxide production - A minireview

Stella Asuming-Brempong 1 and Kenneth K. Nyalemegbe 2


1. Department of Soil Science, College of Agriculture and Consumer Sciencs, University of Ghana, Legon.

2. Evangelical Presbyterian University College, P.O. Box HP 678, Ho, Ghana.

*Corresponding Author’s Email:

Accepted 04 January, 2014



Nitrous oxide is one of the greenhouse gases that is steadily increasing in the atmosphere at a rate of about 0.2% per year. Since the increasing trend is tied to agricultural processes, it is likely to continue to rise in the future and become important in global warming.  Earthworm activities generally result in the high production of N2O from the worms themselves, their casts, the drilosphere and from other indirect activities. This review seeks to examine nitrous oxide production from soils and mitigate it by the use of biochar and endogeic earthworms that reside deep down the soil profile. Biochar also has the tendency of reducing N2O produced in the soil. By the combined use of biochar and endogeic earthworms, fertility of soil can be improved as well as the high emission of greenhouse gas (N2O) reduced in such soil.

Keywords: biochar; nitrous oxide; earthworm.



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