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Georeferenced soil information system: assessment of database

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Title Georeferenced soil information system: assessment of database
Not Available
 
Creator Bhattacharyya, T. et al.
 
Subject Model efficiency, pedotransfer functions, regression analysis, saturated hydraulic conductivity, water retention.
 
Description Not Available
In recent years, georeferenced soil information system
has gained significance in agricultural land-use
planning and monitoring the changes in soil properties/
soil quality induced by land-use changes. The spatiotemporal
information on saturated hydraulic
conductivity (sHC) and soil water retention–release
behaviour is essential for proper crop and land-use
planning. The sHC greatly influences the drainage
process and soil water retention–release behaviour,
ultimately affecting the crop growth and yield. However,
sHC and water retention are not measured in a
routine soil survey and are generally estimated from
easily measurable soil parameters through pedotransfer
functions (PTFs). In the present study, PTFs for
sHC and water retention were developed separately
for the soils of two food-growing zones of India (the
Indo-Gangetic Plains (IGP) and the black soil region
(BSR)). For the IGP soils, sHC is affected by the
increased subsoil bulk density due to intensive cultivation.
In BSR, presence of Na+
and Mg++ ions affects
the drainage and water retention of the soils. Therefore,
these soil parameters were considered while
developing the PTFs using stepwise regression technique
in SPSS. The validation of PTFs was found to be
satisfactory with low RMSE values and high model
efficiency.
Not Available
 
Date 2018-11-29T05:40:57Z
2018-11-29T05:40:57Z
2014-11-10
 
Type Research Paper
 
Identifier Bhattacharyya, T. et al. 2014. Georeferenced soil information system: assessment of database. Current Science 107(9): 1400-1419
0011-3891
http://krishi.icar.gov.in/jspui/handle/123456789/13971
 
Language English
 
Relation Not Available;
 
Publisher CURRENT SCIENCE ASSOCIATION