Assessing C–N balance and soil rejuvenation capacity of vermicompost application in a degraded landscape: A study in an alluvial river basin with Cajanus cajan
- Title
- Assessing C–N balance and soil rejuvenation capacity of vermicompost application in a degraded landscape: A study in an alluvial river basin with Cajanus cajan
- Author
- 김기현
- Keywords
- Vermicompost; Cajanus cajan; Mineralization kinetics; SOC storage; C-N balance
- Issue Date
- 2019-10
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Citation
- Environmental Research, v. 177, article no. 108591
- Abstract
- The value and potential of organic-dependent agriculture has gradually become realized worldwide despite scarcity of data on its ability to rejuvenate land quality. In this work, a popular cultivar of Cajanus cajan was grown in a nutrient-fatigued area with vermicompost (VC) and farmyard manure (FYM) to partially replace chemical fertilization (CF) (reduced by 10 and 50%) over a four-year period. C-N mineralization kinetic equations were applied for the first time to assess the efficacy of vermicompost-based nutrient schemes on C-N balance in arable soil. The results suggested that 10 and 50% replacement of chemical fertilization with vermicompost was helpful to significantly improveC- and N-based mineralization in the cultivated soil. In addition, the gains of humified C (humic and fulvic acid) content (such as 4-and 10-fold increases) were achieved under CF50/VC50 and CF90/VC10 treatments, respectively. In the CF50/VC50 treatment, there was apparent improvement in soil organic C storage (SOCstr) (42.6-57.4%), water holding capacity, and microbial health along with reduction in bulk density (6.10-13.0%). Moreover, improvement in soil quality was strongly evident in terms of crop production with the application of CF50/VC50. Overall, this study successfully validated that vermicompost can be used effectively to achieve sustainable agricultural growth by efficiently arresting land degradation.
- URI
- https://www.sciencedirect.com/science/article/pii/S0013935119303883?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/154555
- ISSN
- 0013-9351; 1096-0953
- DOI
- 10.1016/j.envres.2019.108591
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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