Soil carbon fractions under maize–wheat system: effect of tillage and nutrient management
KRISHI: Publication and Data Inventory Repository
View Archive InfoField | Value | |
Title |
Soil carbon fractions under maize–wheat system: effect of tillage and nutrient management
Not Available |
|
Creator |
S. Sandeep
K. M. Manjaiah Sharmistha Pal A. K. Singh |
|
Subject |
Maize–wheat cropping system Walkley and Black carbon. KMnO4 -oxidizable carbon Microbial biomass carbon Carbon management index
|
|
Description |
Not Available
Soil organic carbon plays a major role in sustaining agroecosystems and maintaining environmental quality as it acts as a major source and sink of atmospheric carbon. The present study aims to assess the impact of agricultural management practices on soil organic carbon pools in a maize–wheat cropping system of Indo-Gangetic Plains, India. Soil samples from a split plot design with two tillage systems (bed planting and conventional tillage) and six nutrient treatments (T=control, T2=120 kg urea–Nha -1,T3=T2(25 % N) substituted by FYM), T4=T2(25 % N substituted bysewage sludge), T5=T2+cropresidue, T=100%organic source (50 % FYM+25 % biofertilizer+25 % crop residue) were used for determining the organic carbon pools. Results show that there was a significant improvement in WalkleyandBlackcarboninsoilunderintegratedand organic nutrient management treatments. KMnO4 -oxidizable carbon content of soil varied from 0.63 to 1.50 g kg-1 in soils and was found to be a better indicator for monitoring the impact of agricultural management practices on quality of soil organic carbon than microbial biomass carbon. Tillage and its interaction were found to significantly influence only those soil organic carbon fractions closely associated with aggregate stability viz, labile polysaccharides and glomalin. The highest amount of C4-derived carbon was found to be in plots receiving recommended doses of N as urea (29 %) followed by control plots (25 %). The carbon management index ranged between 82 to 195 and was better in integrated nutrient sources than ones receiving recommended doses of nutrients through mineral fertilizers alone. Not Available |
|
Date |
2020-06-03T12:10:06Z
2020-06-03T12:10:06Z 2015-11-20 |
|
Type |
Research Paper
|
|
Identifier |
Not Available
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/36821 |
|
Language |
English
|
|
Relation |
Not Available;
|
|
Publisher |
Not Available
|
|