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Echreshavi, Esmaeil, 2013. Comparison of soil carbon stocks in two cropping systems as affected by nitrogen application levels. Second cycle, A2E. Alnarp: SLU, Department of Work Science, Business Economics, and Environmental Psychology

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Abstract

This study aimed to trace possible changes in soil organic carbon (SOC) at different soil depths when treated with different levels on nitrogen fertilizer, in both conventional tillage and reduced tillage systems. The experiment was undertaken in Lönnstorp research station at SLU, Alnarp in south west of Sweden, as a part of a long term experiment. The results agreed with the hypothesis that implied there will be no difference in the amount of soil organic carbon in the soil profile between conventional tillage and reduced tillage systems. But results did not certify other hypothesis of higher SOC in top 20 cm of soil in reduced tillage and neither did they comply with hypothesis of higher SOC in 20-50 cm depth in conventional tillage system. Furthermore, higher levels of N fertilization showed no significant effect on the amount of SOC in soil profile in neither of the systems. In order to encourage farmers to include operations to preserve SOC a case study was included in the socio-economic part and discussed. Since the monetary terms and conditions make the idea more acceptable to farmers, the suggested idea in the case study to provide a carbon-exchange system where the total value of the sequestered carbon can be sold and bought like shares seemed to be suitable, but its feasibility in all countries is questionable. In places where providing incentives to the farmers to sequester carbon in the soil is considered, the longevity of this action for many years is required, due to the nature of SOC.

Main title:Comparison of soil carbon stocks in two cropping systems as affected by nitrogen application levels
Authors:Echreshavi, Esmaeil
Supervisor:Jensen, Erik Steen and Ernfors, Maria
Examiner:Asp, Håkan
Series:Självständigt arbete vid LTJ-fakulteten, SLU
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2013
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:LM005 Agroecology - Master's programme 120 HEC
Department:(LTJ, LTV) > Department of Work Science, Business Economics, and Environmental Psychology
Keywords:carbon sequestration, reduced tillage, N fertilizer, soil organic carbon
URN:NBN:urn:nbn:se:slu:epsilon-s-2139
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-2139
Subjects:Agricultural research
Soil cultivation
Soil science and management
Soil biology
Language:English
Deposited On:09 Apr 2013 09:40
Metadata Last Modified:09 Apr 2013 10:06

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