On-farm comparisons of soil organic carbon under no-tillage and chisel-plow systems |
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| Authors: | Amitava Chatterjee |
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| Institution: | 1. Department of Soil Science, North Dakota State University, Fargo, ND, USAamitava.chatterjee@ndsu.edu |
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| Abstract: | Purpose: Role of no-tillage (NT) in soil conservation has been already established but its influence on soil organic carbon (SOC) is still under debate.Materials and methods: Three paired sites, with NT and chisel-plow (CT) fields adjacent to each other were selected for this study. Fields were under the same tillage practices for more than 20 years. Fields were sampled up to 90?cm depth to determine SOC and different C pools based on soil CO2 flux during 86?d of incubation.Results and conclusion: Significant differences in SOC and its pools were limited within the surface 0–15?cm depth only. Profile SOC did not vary between NT and CT. Tillage had a significant influence on soil C pools but the effect was not consistent across sites. |
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| Keywords: | Northern great plains conservation tillage mineralization carbon pools C:N ratio bulk density |
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