Record Details

Dependence of thermal and moisture sensitivity of soil organic carbon decomposition on manure composition in an Inceptisol under a five-year-old maize-wheat cropping system.

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Dependence of thermal and moisture sensitivity of soil organic carbon decomposition on manure composition in an Inceptisol under a five-year-old maize-wheat cropping system.
Not Available
 
Creator Biswas, D.R., Ghosh, A., Ramachandran, S., Basak, B.B. and Moharana, P.C
 
Subject Moisture sensitivity, soil organic carbon pools, mineralization kinetics, maize-wheat system
 
Description Not Available
Hydrothermal sensitivity of soil organic carbon decomposition in relation to global climatic changes is of great importance for C cycle in an agro‐ecosystem. To assess the sensitivities of SOC as affected by different organic sources and mineral fertilizer in Inceptisol, soil samples from a 5‐year‐old field experiment were collected from unfertilized control, 100% NPK, vermicompost, compost, and farmyard manure (FM) treated plots and analyzed for total organic C, labile C fractions and C mineralization kinetics by incubating soils at 25 and 35°C temperatures, and 0.33 and 1.0 bar soil moisture for 90 days. Compost and FM‐treated plots had ~23 and 22% higher total organic C than 100% NPK plots, respectively. Plots under vermicompost had similar C management index to FM but ~12% higher than compost. At 25°C temperature and 1.0 bar moisture, CO2 evolutions from vermicompost‐ and FM‐treated plots were ~29 and 11% higher than compost, respectively. Carbon decay rate was invariably higher in control and 100% NPK than organically amended plots. Temperature sensitivity of C was similar at 0.33 bar but different at 1.0 bar among the treatments. Moisture sensitivity of C in organic amended plots was similar at 35°C but different at 25°C, but their moisture sensitivity values were always higher than NPK. It could be concluded that manures with low C/N ratio and high N and P content would reduce C decay rate. Hence, to enhance C sequestration and reduce CO2 emissions in changing climatic situation, organic manure like vermicompost could be recommended.
Not Available
 
Date 2020-04-07T04:59:10Z
2020-04-07T04:59:10Z
2018-04-12
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/34512
 
Language English
 
Relation Not Available;
 
Publisher Not Available