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Clay dispersion induced by changes in some soil properties in undulating salt-affected landscapes of southern Karnataka, India

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Title Clay dispersion induced by changes in some soil properties in undulating salt-affected landscapes of southern Karnataka, India
Not Available
 
Creator K. Rajan
A. Natarajan
V. Kasthuri Thilagam
K. S. Anil Kumar,
D. Dinesh
N. M. Alam
O. P. S. Khola
R. C. Gowda
 
Subject Clay dispersion, sodicity, sub-surface effect, surface effect.
 
Description Not Available
Effect of sodicity on clay dispersion in salt-affected
black soils of the Kabini canal command area in
Chamrajnagar district, southern Karnataka was studied.
Forty-eight soil samples were collected from nine
soil profiles and analysed for physical and chemical
properties. The clay dispersion ranged from 0.57% to
62.1%. High positive and negative correlations with
exchangeable sodium and exchangeable calcium respectively,
with clay dispersion were recorded, which
can be predicted better with exchangeable sodium and
available soil water. Based on clay dispersion value,
2%, 27% and 71% soils are dispersive, intermediate
dispersive and non-dispersive respectively. Based on
exchangeable sodium percentage, 50, 21 and 29 soils
are dispersive, intermediate dispersive and nondispersive
respectively. Application of gypsum and
organics reduces the clay dispersion in surface soil.
Sub-surface drainage will be more effective. Construction
Of soil and water conservation structures with pile
foundation; providing cement lining for soil stabilization
in normal construction; providing drainage lines
for the structures; construction after refilling with
non-dispersive soil will save the structures in saltaffected
soils.
Not Available
 
Date 2020-06-01T08:11:07Z
2020-06-01T08:11:07Z
2016-03-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36711
 
Language English
 
Relation Not Available;
 
Publisher Not Available