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Wolverhampton Intellectual Repository and E-Theses > School of Applied Sciences > Research Centre in Applied Sciences  > Plant and Environmental Research Group > Carbon sequestration and relationship between carbon addition and storage under rainfed soybean–wheat rotation in a sandy loam soil of the Indian Himalayas

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/15829
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Title: Carbon sequestration and relationship between carbon addition and storage under rainfed soybean–wheat rotation in a sandy loam soil of the Indian Himalayas
Authors: Kundu, S.
Bhattacharyya, Ranjan
Prakash, Ved
Ghosh, B.N.
Gupta, H.S.
Citation: Soil and Tillage Research, 92(1-2): 87-95
Publisher: Elsevier
Issue Date: 2007
URI: http://hdl.handle.net/2436/15829
DOI: 10.1016/j.still.2006.01.009
Additional Links: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-4JJ847C-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=808f7bbd448a955001fb54d5e89edeff
Abstract: Soil organic matter (SOM) contributes to the productivity and physical properties of soils. Although crop productivity is sustained mainly through the application of organic manure in the Indian Himalayas, no information is available on the effects of long-term manure addition along with mineral fertilizers on C sequestration and the contribution of total C input towards soil organic C (SOC) storage. We analyzed results of a long-term experiment, initiated in 1973 on a sandy loam soil under rainfed conditions to determine the influence of different combinations of NPK fertilizer and fertilizer + farmyard manure (FYM) at 10 Mg ha−1 on SOC content and its changes in the 0–45 cm soil depth. Concentration of SOC increased 40 and 70% in the NPK + FYM-treated plots as compared to NPK (43.1 Mg C ha−1) and unfertilized control plots (35.5 Mg C ha−1), respectively. Average annual contribution of C input from soybean (Glycine max (L.) Merr.) was 29% and that from wheat (Triticum aestivum L. Emend. Flori and Paol) was 24% of the harvestable above-ground biomass yield. Annual gross C input and annual rate of total SOC enrichment were 4852 and 900 kg C ha−1, respectively, for the plots under NPK + FYM. It was estimated that 19% of the gross C input contributed towards the increase in SOC content. C loss from native SOM during 30 years averaged 61 kg C ha−1 yr−1. The estimated quantity of biomass C required to maintain equilibrium SOM content was 321 kg ha−1 yr−1. The total annual C input by the soybean–wheat rotation in the plots under unfertilized control was 890 kg ha−1 yr−1. Thus, increase in SOC concentration under long-term (30 years) rainfed soybean–wheat cropping was due to the fact that annual C input by the system was higher than the required amount to maintaining equilibrium SOM content.
Type: Article
Language: en
Description: Metadata only
Keywords: Carbon sequestration
Wheat
Farmyard manure
Soybean based cropping system
Sandy soils
Sub-temperate Indian Himalayas
Loamy sand
India
Soil fertility
Rainfed cropping
ISSN: 01671987
Appears in Collections: Plant and Environmental Research Group

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