KRISHI
ICAR RESEARCH DATA REPOSITORY FOR KNOWLEDGE MANAGEMENT
(An Institutional Publication and Data Inventory Repository)
"Not Available": Please do not remove the default option "Not Available" for the fields where metadata information is not available
"1001-01-01": Date not available or not applicable for filling metadata infromation
"1001-01-01": Date not available or not applicable for filling metadata infromation
Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/44379
Title: | Partitioning of total soil respiration into root, rhizosphere and basal-soil CO2 fluxes in contrasting rice production systems. |
Other Titles: | Not Available |
Authors: | Neogi, S., Dash, P.K., Bhattacharyya, P., Padhy, S.R., Roy, K.S. and Nayak, A.K. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::National Rice Research Institute Global Centre for Environment and Energy, Ahmedabad University, Ahmedabad, Gujarat, India Department of Environmental Science and Engineering, Marwadi University, Rajkot, Gujarat, India |
Published/ Complete Date: | 2020-07-23 |
Project Code: | Not Available |
Keywords: | rhizosphere respiration, rice production systems, soil carbon pools, soil respiration partitioning |
Publisher: | CSIRO Publishing |
Citation: | Neogi, S., Dash, P.K., Bhattacharyya, P., Padhy, S.R., Roy, K.S. and Nayak, A.K., 2020. Partitioning of total soil respiration into root, rhizosphere and basal-soil CO2 fluxes in contrasting rice production systems. Soil Research, pp.1-10. |
Series/Report no.: | Not Available; |
Abstract/Description: | Soil respiration contributes significantly to ecosystem respiration and is vital in the context of climate change research. In a season-long experiment we studied total soil respiration (TSR) and its partitioning into root respiration, rhizospheric respiration (RhR) and basal-soil respiration in four contrasting rice production systems: irrigated lowland (IL) (cv. Gayatri); organic nutrient managed irrigated lowland (OIL) (cv. Geetanjali); system of rice intensification (SRI) (cv. Swarna); and aerobic rice system (Aerobic) (cv. APO). We considered TSR to be the sum of root respiration, RhR and basal-soil respiration. Irrespective of the rice production system, TSR was higher at panicle initiation stage. Considering all four systems, the RhR contributed the most (59–83%) and basal-soil respiration the least (10–19%) to the TSR. Mean RhR showed the trend of Aerobic SRI IL OIL across the growing seasons and indicated higher rhizosphere activities in the aerobic system. Mean root respiration showed a trend of IL OIL SRI Aerobic and mean basal-soil respiration had SRI IL OIL Aerobic. Soil labile carbon pools and heterotrophic populations were higher in OIL and dehydrogenase activity was higher in SRI. Microbial biomass carbon, readily mineralisable carbon, dehydrogenase activity and the heterotroph population showed positive correlations with RhR. Hence, regulation of RhR is crucial and can be achieved through rhizosphere modifications linked with labile carbon pools and soil enzymatic activities by plant physiological modification or through soil carbon stabilisation. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Research Paper |
Sponsors: | ICAR |
Language: | English |
Name of Journal: | Soil Research (Australian Journal of Soil Research) |
NAAS Rating: | 7.69 |
Volume No.: | Not Available |
Page Number: | 1-10 |
Name of the Division/Regional Station: | Crop Production Division |
Source, DOI or any other URL: | https://doi.org/10.1071/SR20006 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/44379 |
Appears in Collections: | CS-NRRI-Publication |
Files in This Item:
There are no files associated with this item.
Items in KRISHI are protected by copyright, with all rights reserved, unless otherwise indicated.