Archives

International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (184) Last page : (197)
Article doi: : http://dx.doi.org/10.18782/2320-6697

A Comparison of Different Fractions of Organic Carbon and Organic Nitrogen under Different Land Use Systems of Haryana

Usha Kaushik¹*, Dev Raj², Pooja Rani² and R. S. Antil³ and Vijaykant⁴

¹Present address: Ph.D. Scholar, UAS, GKVK, Bangaluru
²Department of Soil Science, CCS Haryana Agricultural University Hisar
³Present address: Amity Food and Agriculture Foundation, Amity University Uttar Pradesh
⁴Present address: Ph.D. Scholar, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand
*Corresponding Author E-mail: kaushikusha63@gmail.com
Received: 5.07.2018 | Revised: 16.08.2018 | Accepted: 22.08.2018  

 

 ABSTRACT

A study on soil organic carbon and organic nitrogen fractions under different land use system of Haryana was carried out to evaluate the changes in soil quality caused by different land use systems at Department of Soil Science CCS HAU, Hisar. Different land use systems viz., cotton-wheat, rice-wheat, sugarcane-sugarcane pearl millet-wheat (zero tillage), pearl millet-wheat (conventional tillage), citrus orchard, guava orchard and vegetables were selected for the study. Soil samples replicated five times were selected from each land use systems along with their uncultivated soils and analyzed for organic carbon and organic nitrogen fractions, available nutrients, pH, EC and CEC. The total organic carbon was found highest under horticulture land  use system and highest content (9.72 g kg-1) was found in guava orchard, however, lowest 4.84 g kg-1 was observed under pearl millet-wheat land use system. The highest microbial biomass carbon, light fraction carbon and heavy fraction carbon content was observed under guava orchard i.e. 238.14 mg kg-1, 1.76 g kg-1 and 7.51 g kg-1 ,while highest DOC content (386.00 mg kg-1 ) was found under cotton-wheat cropping system. Similarly, total hydrolysable nitrogen, amino acid-N, amino sugar-N, ammonia-N and hydrolysable unknown-N fractions of organic nitrogen found to vary as 347.20-1003.20, 133.20-273.00, 74.60-165.60, 175.8-245.80, 71.00-372.00 and 170.90-576.4 mg kg-1 under different land use system.  All these fractions of organic nitrogen found higher under guava orchard while ammonia-N was noticed higher under sugarcane-sugarcane land use system. The total nitrogen and organic nitrogen fractions content observed to increase with increased content of TOC and found higher under horticulture land use system.

Key words: Organic carbon pools, Organic nitrogen fractions, Available nutrients, Land use systems, Cultivation.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Kaushik, U., Raj, D., Rani, P. and Antil, R. S. and Vijaykant, A Comparison of Different Fractions of Organic Carbon and Organic Nitrogen under Different Land Use Systems of Haryana, Int. J. Pure App. Biosci.6(5): 184-197 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6697