Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2019) [Effective from January 1, 2019]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(5): 816-832
DOI: https://doi.org/10.20546/ijcmas.2017.605.092


Nitrogen Transformation in Soil: Effect of Heavy Metals
N. Hamsa1*, G.S. Yogesh2, Usha Koushik1 and Lokesh Patil1
1Department of Soil Science and Agricultural Chemistry, UAS GKVK, Bengaluru, 560065, India
2Subject Matter Specialist (Soil Science) Krishi Vigyan Kendra, Haradanahally,Chamarajnagar, 571 313, India
*Corresponding author
Abstract:

Nitrogen is the key nutrient factor that influences soil fertility and productivity. It is the mineral nutrient that exists in different forms, but nitrate form is the most preferred form by plants. Irrespective of the form in which N is applied to soil, it undergoes transformation viz. mineralization (ammonification, nitrification), denitrification etc. by enzymes produced by micro organisms. The rate of these processes are influenced by a number of factors, one such being heavy metals accumulated in soil by various anthropogenic activities like disposal of sewage sludge, domestic and industrial effluents discharge, deposition of air borne particulates from mining on agriculture land etc. The heavy metals cause long term hazardous effects on soil eco system and negatively influence the soil biological processes, soil microbial biomass and functions associated with soil N transformation. Hence, there is a need for the study and to monitor heavy metal concentration in soil. The effects of heavy metal contamination on soil are quite alarming and cause huge disturbances in the ecological balance and health of living organisms on earth. Micro organisms and enzymes associated with N transformation in soil are inhibited directly or indirectly by heavy metals. The extent of inhibition depends on the concentration and oxidation state of heavy metals and on soil characteristics.


Keywords: Nitrogen Transformation, Enzyme Activity, Heavy Metals.
Download this article as Download

How to cite this article:

Hamsa, N., G.S. Yogesh, Usha Koushik and Lokesh Patil. 2017. Nitrogen Transformation in Soil: Effect of Heavy Metals.Int.J.Curr.Microbiol.App.Sci. 6(5): 816-832. doi: https://doi.org/10.20546/ijcmas.2017.605.092