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Field-scale spatial variability of physical properties of black soils of Purna Valley, India, using Geostatistical Approach

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Title Field-scale spatial variability of physical properties of black soils of Purna Valley, India, using Geostatistical Approach
Not Available
 
Creator Naitam R.K., Kharche V.K., Kadu P.R., Mohrana P.C. and Sharma R.P.
 
Subject Soil physical properties, Spatial variability, Geostatistics, Semivariogram, Cross-validation, Purna valley
 
Description Not Available
The analysis of the spatial variability of soil properties is important for precision agriculture, land use
planning and environmental modelling. Soil texture (sand, silt and clay) and soil hydraulic properties
like available water capacity and hydraulic conductivity are most important soil physical properties
that govern nearly all of the soil attributes. The objective of the study was to determine the degree of
spatial variability of sand, silt, clay, bulk density, hydraulic conductivity and available water content at
field capacity (FC), permanent wilting point (PWP) and available water capacity (AWC) of salt affected
black soils of Purna valley. Data were analyzed both statistically and geostatistically to describe the
spatial distribution of soil physical properties. Soil physical properties showed large variability with
greatest variation was observed in hydraulic conductivity (54%). Spherical and gausian models were fit
well for the soil physical properties. The nugget/sill ratio indicates that hydraulic conductivity, clay, silt
content and soil water content at field capacity were strongly spatially dependent and all other soil
physical properties were moderate spatially dependent. Cross validation of the kriged map shows that
prediction of the soil physical properties using semivariogram parameters is better than assuming mean
of observed value for any unsampled location. The spatial distribution of hydraulic conductivity and
bulk density followed the distribution pattern of clay and exchangeable sodium content. These maps
will help to the planners in site-specific management/precision farming by application of the correct
measures for improving the physical properties of these degraded shrink-swell soils through application
of gypsum, FYM and green manuring through variable rate techniques.
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Date 2020-05-27T10:23:35Z
2020-05-27T10:23:35Z
2018-01-01
 
Type Research Paper
 
Identifier Naitam R.K., Kharche V.K., Kadu P.R., Mohrana P.C. and Sharma R.P. (2018) Field-scale spatial variability of physical properties of black soils of Purna Valley, India, using Geostatistical Approach. Journal of Soil and Water Conservation, 17(4): 325-334. DOI: 10.5958/2455-7145.2018.00050.4
0022-457X
2455-7145
http://krishi.icar.gov.in/jspui/handle/123456789/36455
 
Language English
 
Relation Not Available;
 
Publisher Soil Conservation Society of India