Record Details

Long-term conservation agriculture helps in the reclamation of sodic soils in major agri-food systems

CIMMYT Research Data & Software Repository Network Dataverse OAI Archive

View Archive Info
 
 
Field Value
 
Title Long-term conservation agriculture helps in the reclamation of sodic soils in major agri-food systems
 
Identifier https://hdl.handle.net/11529/10548759
 
Creator Jat, Hanuman S.
Choudhary, Madhu
Datta, Ashim
Kakraliya, Suresh K.
McDonald, Andrew J.
Jat, Mangi L.
Sharma, Parbodh C.
 
Publisher CIMMYT Research Data & Software Repository Network
 
Description Globally crop production is impaired by soil salinity and sodicity and to maintain the
sustainability of the production systems under such degraded lands, conservation
agriculture (CA) may be an alternative in arid and semiarid regions. An experiment
was initiated with different agri-food systems with CA-based practices to understand
the reclamation potential of sodic soil after continuous cultivation for 4 and 9 years.
This included: (i) conventional tillage (CT)-based rice-wheat system (Sc1); (ii) partial
CA with puddled rice-zero tillage (ZT) wheat and mungbean (Sc2); (iii) ZT rice-wheatmungbean
(Sc3); (iv) ZT maize-wheat-mungbean (Sc4). Soil samples were collected
from 0 to 15 and 15 to 30-cm depth after 4 and 9 years of wheat harvesting. Results
showed an 18% decline in pH2 with Sc2 and ~30% decline in EC2 with Sc2 and
Sc3 at upper soil depth after 9 years. Higher cation exchange capacity by 35% and
89% in Sc2 and 38% and 58% in Sc3 after 4 and 9 years was found, respectively,
over initial levels. A decrease in exchangeable sodium percentage was recorded in
Sc2 by 43% and 50%, after 4 and 9 years over the initial level, respectively. The oxidizable
carbon and total organic carbon were increased by ~76%, 69%, and 64% in
Sc4, Sc3, and Sc2, respectively, over initial values at 0–15 cm soil depth. Results
showed that the CA-based rice-wheat-mungbean system had more reclamation
potential than other studied systems. Therefore, long-term CA practices involving ZT
with crop residue recycling and efficient crop rotations have the potential to reduce
the sodicity stress and improve soil organic carbon thereby bringing the sodic lands
under productive crop cultivation.
 
Subject Agricultural Sciences
 
Language English
 
Contributor KALVANIA, Kailash Chandra