IMPACT OF LONG TERM TILLAGE AND RESIDUE APPLICATION ON ORGANIC CARBON POOLS AND CARBON STOCK IN SEMI ARID TROPICAL ALFISOL OF HYDERABAD
KRISHI: Publication and Data Inventory Repository
View Archive InfoField | Value | |
Title |
IMPACT OF LONG TERM TILLAGE AND RESIDUE APPLICATION ON ORGANIC CARBON POOLS AND CARBON STOCK IN SEMI ARID TROPICAL ALFISOL OF HYDERABAD
|
|
Creator |
D. SUMA CHANDRIKA, K .L. SHARMA, S. VIDYAVATHI2, MUNNALAL, K. USHA RANI AND T. SATISH KUMAR
|
|
Subject |
Conservation tillage, organic carbon pools, carbon stock, intercorrelations, relative yield
|
|
Description |
Not Available
long term experiment was conducted in rainfed semi-arid tropical Alfisol at Hayathnagar Research Farm of Central Research Institute for Dryland Agriculture, Hyderabad, India, during the period 1995 to 2013 to study the long-term impacts of tillage and residue application on carbon sequestration, C pools and C Management Indices and their relationship with crop yield. The experiment was conducted in a split-split plot design with conventional tillage (CT) and minimum tillage (MT) as main factors, surface application of sorghum stover @ 2t ha-1 (SS), fresh gliricidia loppings @ 2t ha-1 (GL) and ‘no’ residue (NR) as sub factors and levels of N viz., 0 (N0), 30 (N30), 60 (N60) and 90 (N90) kg N ha-1 as sub-sub factors in a castor-sorghum yearly rotation. The results of the study clearly indicated that minimum tillage significantly increased the contents of soil C pools viz., microbial biomass carbon, labile carbon and its fractions and particulate organic carbon compared to conventional tillage. It was also observed that significant inter-correlations existed among the carbon pools studied which indicated a dynamic equilibrium with each other. Of all the treatment combinations studied, the practice of minimum tillage coupled with application of Gliricidia loppings @ 2t ha-1 and nitrogen applied @ 90 kg ha-1 (MTGLN90) was found to be the most promising in terms of maintaining significantly higher carbon stock in semi arid tropical Alfisols. Not Available |
|
Date |
2017-03-07T07:15:51Z
2017-03-07T07:15:51Z 2016-09-01 |
|
Type |
Research Paper
|
|
Identifier |
Not Available
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/2830 |
|
Language |
English
|
|
Relation |
Not Available;
|
|
Publisher |
GKV
|
|