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Vol.1 , No. 1, Publication Date: May 25, 2016, Page: 1-8
 and soil total nitrogen (STN) in different agricultural soils of Mymensigh district located in northern Bangladesh 24°45′14″N 90°24′11″E. The land use types considered were cultivated (single, double and triple cropped), agroforestry, fallow land and grass land. 32 soil samples were collected covering above land use types. SOC and STN were significantly varied in different land use pattern and soil management practices. Among all land use pattern the highest SOC and STN were found under agroforestry and the lowest was found under fallow land. Cropping pattern also influenced the SOC accumulation in soil where rice-fallow-rice cropping pattern had highest SOC accumulation and lowest was found in rice-rice-rice cropping pattern. Organic carbon dynamics highly regulated by organic fertilizer application and tillage operation. The carbon to nitrogen (C: N) ratio was affected by land use systems and the ranges obtained 4.9 to 11.6. The C: N ratio was narrows in different agricultural land use pattern and higher in agroforestry system. The contents of total nitrogen was strongly associated (R<sup>2</sup> = 0.98) with total organic carbon and decreased consistently with increasing soil depth under all land use systems. The result of this study will help to develop future plan about land use and soil management regarding soil carbon and nitrogen dynamics for better economic returns with environmental protection.&picture=http://www.aascit.org/aascit/decorators/img/journal/805.jpg)
| [1] | Nasrin Islam, Department of Environmental Science, Bangladesh Agricultural University, Mymensingh, Bangladesh. |
| [2] | Shahadat Hossen, Department of Environmental Science, Bangladesh Agricultural University, Mymensingh, Bangladesh. |
| [3] | Abdul Baten, Department of Environmental Science, Bangladesh Agricultural University, Mymensingh, Bangladesh. |
This study was conducted to evaluate the effect of land uses and soil management practices on the soil organic carbon (SOC) and soil total nitrogen (STN) in different agricultural soils of Mymensigh district located in northern Bangladesh 24°45′14″N 90°24′11″E. The land use types considered were cultivated (single, double and triple cropped), agroforestry, fallow land and grass land. 32 soil samples were collected covering above land use types. SOC and STN were significantly varied in different land use pattern and soil management practices. Among all land use pattern the highest SOC and STN were found under agroforestry and the lowest was found under fallow land. Cropping pattern also influenced the SOC accumulation in soil where rice-fallow-rice cropping pattern had highest SOC accumulation and lowest was found in rice-rice-rice cropping pattern. Organic carbon dynamics highly regulated by organic fertilizer application and tillage operation. The carbon to nitrogen (C: N) ratio was affected by land use systems and the ranges obtained 4.9 to 11.6. The C: N ratio was narrows in different agricultural land use pattern and higher in agroforestry system. The contents of total nitrogen was strongly associated (R2 = 0.98) with total organic carbon and decreased consistently with increasing soil depth under all land use systems. The result of this study will help to develop future plan about land use and soil management regarding soil carbon and nitrogen dynamics for better economic returns with environmental protection.
Keywords
Soil Organic Carbon, Soil Total Nitrogen, C: N Ratio, Agroforestry, Fallowland
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